Communication system access method and equipment

Abstract

The invention relates to a communication system access method and equipment. According to one aspect of the disclosure, there is provided a method executed by a user equipment (UE) in a communication system, comprising: receiving a downlink reference signal burst, the downlink reference signal burst comprising Y frequency division multiplexed downlink reference signals of a first mode, the Y downlink reference signals comprising at least one first downlink reference signal, a first frequency associated with the at least one first downlink reference signal is within a first frequency range, and the first frequency range is within a second frequency range; and sending an uplink signal and / or receiving a downlink signal based on a first frequency domain resource, the bandwidth of the first frequency domain resource being associated with the frequency domain resource of at least part of the downlink reference signals in the Y downlink reference signals.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communications, and more particularly, to a method and apparatus for accessing a communication system. BACKGROUND

[0002] To meet the demand for wireless data traffic "Big Video" since the deployment of 4G communication systems, efforts have been made to develop an improved 5G or pre-5G communication system. Therefore, the 5G or pre-5G communication system is also called a "Beyond 4G Network" or a "5G Network."

[0003] The 5G communication system is implemented in a higher frequency (mmWave) band, such as 60 GHz band, so as to accomplish a higher data rate. To mitigate a propagation loss of radio waves and increase a transmission distance, beamforming, massive multiple-input multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam forming, large scale antenna techniques are discussed in 5G communication systems.

[0004] In addition, in 5G communication systems, development for system network improvement is under way based on advanced small cells, cloud radio access networks (RANs), ultra-dense networks, a device to device (D2D) communication, a wireless backhaul, a mobile network, a cooperative communication, coordinated multi-points (CoMP), a reception-end interference cancellation and the like.

[0005] In the 5G system, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) as an advanced coding modulation (ACM), and filter bank multi carrier (FBMC), a non-orthogonal multiple access (NOMA), and a sparse code multiple access (SCMA) as an advanced access technology have been developed. SUMMARY

[0006] According to an embodiment of the disclosure, a method performed by a user equipment (UE) in a communication system is provided, comprising:

[0007] receiving a downlink reference signal burst, wherein the downlink reference signal burst comprises Y downlink reference signals of a frequency division multiplexing of a first pattern, the Y downlink reference signals comprising at least one first downlink reference signal, a first frequency associated with the at least one first downlink reference signal being within a first frequency range, the first frequency range being within a second frequency range;

[0008] transmitting an uplink signal and / or receiving a downlink signal based on a first frequency domain resource, wherein a bandwidth of the first frequency domain resource is associated with a frequency domain resource of at least part of the Y downlink reference signals.

[0009] In an implementation form, the first frequency domain resource is determined by at least one of:

[0010] the frequency domain resources occupied by the P downlink reference signals detected in the downlink reference signal burst;

[0011] the frequency domain resources occupied by the P downlink reference signals and a third frequency domain offset, the third offset being a frequency domain offset relative to the frequency domain resources occupied by the P downlink reference signals;

[0012] the frequency domain resources occupied by the K downlink reference signals configured from the Y downlink reference signals, wherein K is not less than P and K is not greater than Y;

[0013] the frequency domain resources occupied by the K downlink reference signals and a fourth frequency domain offset, the fourth frequency domain offset being a frequency domain offset relative to the frequency domain resources occupied by the Y downlink reference signals;

[0014] the frequency domain resources occupied by Z downlink reference signals from the Y downlink reference signals, wherein Z is not greater than Y.

[0015] In an implementation manner, the method further includes: receiving indication information about the positions of the K configured downlink reference signals in the first mode,

[0016] wherein the receiving the downlink reference signal burst includes receiving the downlink reference signal burst based on the indication information about the positions.

[0017] In an implementation manner, the Y downlink reference signals correspond to a plurality of carriers, and a third frequency domain resource corresponding to each carrier and used for transmitting and / or receiving signals is determined based on at least one of the following: the frequency domain resources corresponding to the Y downlink reference signals, the first frequency domain resource, and information about a minimum channel bandwidth.

[0018] In an implementation manner, the information about the minimum channel bandwidth is obtained through indication information in the P detected downlink reference signals.

[0019] In an implementation manner, the Y downlink reference signals have an association relationship with frequency domain resources used for transmitting and / or receiving signals,

[0020] the association relationship includes that one downlink reference signal corresponds to one frequency domain resource, or a plurality of downlink reference signals correspond to one frequency domain resource.

[0021] In an implementation manner, the at least one first downlink reference signal includes a downlink reference signal with a minimum index in each time unit corresponding to the first mode, or a downlink reference signal with a maximum index in each time unit, or a downlink reference signal related to a middle value of indexes in each time unit.

[0022] In an implementation form, the receiving the downlink reference signal burst comprises:

[0023] receiving the plurality of downlink reference signals of the first pattern of frequency division multiplexing according to the information related to the first downlink reference signal.

[0024] In an implementation form, the information related to the first downlink reference signal comprises predefined frequency information, the frequency information being related to the first frequency, or,

[0025] wherein the information related to the first downlink reference signal is obtained according to received configuration information related to the first pattern, the information related to the first downlink reference signal being related to at least one of the first frequency, the first frequency range, or a first frequency offset of the first frequency relative to a first reference frequency, the first reference frequency.

[0026] In an implementation form, the first reference frequency is one of: a frequency reference position related to a frequency domain resource; a specified frequency; a frequency of a reference signal related to the UE,

[0027] wherein the reference signal related to the UE comprises: a signal for activating the UE to receive the third downlink reference signal or a signal for waking up the UE.

[0028] In an implementation form, the configuration information related to the first pattern comprises at least one of: second pattern related information corresponding to the first pattern, configuration parameter information of the downlink reference signal in the first pattern, number information of the downlink reference signals of frequency division multiplexing in the first pattern,

[0029] wherein the second pattern comprises Y downlink reference signals of frequency division multiplexing on one time domain unit, or comprises Y downlink reference signals of frequency division multiplexing on a plurality of time domain units.

[0030] In an implementation form, the plurality of downlink reference signals in the first pattern are indexed in a frequency domain first and then time domain manner, or in a time domain first and then frequency domain manner.

[0031] In an implementation form, a frequency domain interval between adjacent downlink reference signals of the first pattern is 0, or is a predefined or preconfigured first frequency domain unit interval.

[0032] In an implementation form, the first frequency domain unit interval is predetermined, or is obtained through one of: a broadcast channel PBCH, a system information block 1 physical downlink control channel SIB1 PDCCH, a system information block 1 physical downlink shared channel SIB1 PDSCH.

[0033] In an implementation, the multiple patterns of the first mode correspond to same frequency domain unit interval, or different patterns of the first mode correspond to different frequency domain unit intervals.

[0034] In an implementation, the configuration parameter information of the downlink reference signal in the first mode includes at least one of: the number of downlink reference signals in the first mode, the number of time domain units occupied, the number of frequency domain units occupied.

[0035] In an implementation, the configuration parameter information of the downlink reference signal in the first mode is related to the frequency of the system.

[0036] In an implementation, all downlink reference signals in the first mode correspond to same subcarrier spacing.

[0037] In an implementation, the second pattern related information corresponding to the first mode is determined by high layer signaling, or is related to the frequency of the system.

[0038] In an implementation, the first mode related configuration information is received through at least one of: a broadcast channel PBCH; a PDCCH or a PDSCH related to a system information block; a radio resource control RRC signaling; a signal for activating the UE to receive a third downlink reference signal or a signal for waking up the UE,

[0039] In an implementation, the first mode related configuration information is indicated by sequence information of the signal for activating the UE to receive a third downlink reference signal or the signal for waking up the UE.

[0040] In an implementation, the frequency division multiplexed Y downlink reference signals are frequency division multiplexed multiple synchronization signal PBCH blocks SSBs.

[0041] In an implementation, the frequency division multiplexed Y downlink reference signals are reference signals dedicated to beam management,

[0042] The first mode related configuration information further includes: pattern related information of the reference signal dedicated to beam management, resource configuration information of the reference signal dedicated to beam management.

[0043] In an implementation, the first mode related configuration information is received through at least one of: a PBCH, a SIB1 PDCCH, a SIB1 PDSCH, a message 2 MSG2 PDCCH, a MSG2 PDSCH.

[0044] In an implementation, the pattern related information includes at least one of: the number of frequency domain units occupied by the reference signal dedicated to beam management, the number of time domain units, the total number of reference signals dedicated to beam management.

[0045] In an implementation manner, the resource configuration information comprises at least one of the following: a time domain starting position of the dedicated reference signal, a frequency domain starting position, an offset from a frequency domain reference point, a time domain period.

[0046] In an implementation manner, the first mode related configuration information further comprises at least one of the following: information indicating whether the downlink reference signal is transmitted through the first mode; measurement window configuration information; a type of measurement value; resource configuration of measurement reporting.

[0047] In an implementation manner, the method further comprises: determining whether to receive a plurality of downlink reference signals of frequency division multiplexing of the first mode based on whether the first mode is enabled and / or whether the UE satisfies the first condition.

[0048] In an implementation manner, whether the first mode is enabled is determined by at least one of the following:

[0049] determining that the first mode is enabled based on that the first mode related configuration information is included in the received downlink reference signal, or

[0050] determining that the first mode of the downlink reference signal is enabled based on that the type information of the downlink reference signal included in the received first mode related configuration information indicates the first mode, or the indication information indicating whether the signal of the second mode is transmitted indicates that the signal of the second mode is not transmitted, wherein the reference signal of the second mode is not frequency division multiplexed,

[0051] determining whether the first mode of the downlink reference signal is enabled based on the indication information about whether the first mode is enabled received through at least one of the following: PBCH, SIB1 PDCCH, SIB1 PDSCH,

[0052] determining whether the first mode is enabled based on a frequency offset of the downlink reference signal from a resource grid,

[0053] if an uplink transmission resource corresponding to the first mode is configured, determining that the first mode is enabled.

[0054] In an implementation manner, the first condition comprises at least one of the following:

[0055] the UE capability supports receiving the downlink reference signal of the first mode;

[0056] the UE capability supports receiving a first frequency corresponding to the first downlink reference signal;

[0057] the minimum channel bandwidth supported by the UE is not less than the occupied channel bandwidth of the downlink reference signal of the first mode;

[0058] The minimum channel bandwidth supported by the UE is not less than a channel bandwidth occupied by the downlink reference signals of the at least two frequency division multiplexing in the first mode;

[0059] The maximum number of frequency division multiplexed downlink reference signals supported by the UE is not less than two;

[0060] The maximum channel bandwidth supported by the UE is not less than a channel bandwidth occupied by the downlink reference signals of the first mode;

[0061] The UE does not detect the downlink reference signals of the second mode on the first frequency, the reference signals of the second mode including M downlink reference signals time division multiplexed on M time units, M being an integer not less than 1.

[0062] In an implementation manner, the receiving the plurality of downlink reference signals of the first mode in frequency division multiplexing includes:

[0063] The first frequency corresponding to the first downlink reference signal and the second pattern related information corresponding to the first mode are obtained according to the first downlink reference signal related information, and the plurality of downlink reference signals of the first mode in frequency division multiplexing are received based on the first frequency and the second pattern related information.

[0064] In an implementation manner, the first mode related configuration information is determined by the UE based on at least one of the supported subcarrier spacing (SCS) related information, the operating frequency range, and the first downlink reference signal information corresponding to the operating frequency range.

[0065] In an implementation manner, the method further includes: obtaining a measurement result by receiving P downlink reference signals of the first mode in frequency division multiplexing, wherein the measurement result includes: an index or a measurement value of one or more downlink reference signals whose measurement value of received signals exceeds a power threshold, or an index or a measurement value of one or more downlink reference signals whose measurement value of received signals is the largest.

[0066] In an implementation manner, the method further includes: obtaining information related to initial access based on receiving P downlink reference signals of the first mode in frequency division multiplexing,

[0067] The information related to initial access includes at least one of the following:

[0068] The frequency offset between the system information block related frequency domain resource and one of the following: the received downlink reference signal, the first downlink reference signal in the first mode, the downlink reference signal with the smallest index in the first mode, or the downlink reference signal with the largest index in the first mode;

[0069] Information related to uplink and / or downlink frequency domain resources for initial access;

[0070] Information related to a minimum channel bandwidth.

[0071] In an implementation, the method further includes: selecting a downlink reference signal from the received downlink reference signals,

[0072] wherein the uplink transmission resource for transmitting the uplink signal comprises a RO resource on an uplink frequency domain resource associated with the selected downlink reference signal, or

[0073] The uplink transmission resource is a resource dedicated to the downlink reference signal in the first mode.

[0074] In an implementation, transmitting the uplink signal includes:

[0075] determining a transmission power according to the index of the selected downlink reference signal;

[0076] transmitting the uplink signal with the transmission power.

[0077] In an implementation, the method further includes: receiving a downlink signal on a downlink frequency domain resource associated with the selected downlink reference signal,

[0078] wherein the downlink signal is scrambled by a random access radio network temporary identifier (RA-RNTI), and the RA-RNTI is based on the index of the selected downlink reference signal or the index of the uplink frequency domain resource.

[0079] In an implementation, the method further includes: obtaining a second frequency offset based on the received downlink reference signal,

[0080] determining a second frequency reference position related to the first frequency domain resource based on at least one of the second frequency offset, the index information of the received downlink reference signal, the number of frequency domain resources occupied by the received downlink reference signal, or the subcarrier spacing corresponding to the received downlink reference signal.

[0081] In an implementation, the second frequency offset comprises a frequency offset relative to a first resource block, and the first resource block is determined based on a common resource block and a frequency domain unit with the lowest index in the first mode.

[0082] In an implementation, the second frequency offset comprises a plurality of frequency offsets corresponding to Y downlink reference signals in frequency division multiplexing in the first mode.

[0083] In an implementation, the uplink signal comprises a physical random access channel (PRACH), a physical uplink shared channel (PUSCH), or a physical uplink control channel (PUCCH).

[0084] According to an embodiment of the present disclosure, a method performed by a network device in a communication system is provided, comprising:

[0085] transmitting a downlink reference signal burst, wherein the downlink reference signal burst comprises Y downlink reference signals in a first pattern of frequency division multiplexing, the Y downlink reference signals comprising at least one first downlink reference signal, a first frequency associated with the at least one first downlink reference signal being within a first frequency range, the first frequency range being within a second frequency range;

[0086] transmitting an uplink signal and / or receiving a downlink signal based on a first frequency domain resource, wherein a bandwidth of the first frequency domain resource is associated with a frequency domain resource of at least part of the Y downlink reference signals.

[0087] In an implementation form, the first frequency domain resource is determined based on at least one of:

[0088] frequency domain resources occupied by P detected downlink reference signals in the downlink reference signal burst;

[0089] frequency domain resources occupied by the P downlink reference signals and a third frequency domain offset, the third offset being a frequency domain offset relative to the frequency domain resources occupied by the P downlink reference signals;

[0090] frequency domain resources occupied by K configured downlink reference signals among the Y downlink reference signals, wherein K is not less than P and K is not greater than Y;

[0091] frequency domain resources occupied by the K downlink reference signals and a fourth frequency domain offset, the fourth frequency domain offset being a frequency domain offset relative to the frequency domain resources occupied by the Y downlink reference signals;

[0092] frequency domain resources occupied by Z downlink reference signals among the Y downlink reference signals, wherein Z is not greater than Y.

[0093] In an implementation form, the method further comprises transmitting indication information about positions of the K configured downlink reference signals in the first pattern.

[0094] In an implementation form, the Y downlink reference signals correspond to a plurality of carriers, and a third frequency domain resource corresponding to each carrier for transmitting and / or receiving signals is determined based on at least one of: frequency domain resources corresponding to the Y downlink reference signals, the first frequency domain resource, and information related to a minimum channel bandwidth.

[0095] In an implementation form, the method further comprises transmitting the information related to the minimum channel bandwidth through indication information in the plurality of downlink reference signals.

[0096] In an implementation manner, the Y downlink reference signals have an association relationship with frequency domain resources for transmitting and / or receiving signals.

[0097] The association relationship includes one downlink reference signal corresponding to one frequency domain resource, or multiple downlink reference signals corresponding to one frequency domain resource.

[0098] In an implementation manner, the at least one first downlink reference signal includes a downlink reference signal with the smallest index in each time unit corresponding to the first mode, or a downlink reference signal with the largest index in each time unit, or a reference signal related to the middle value of the index in each time unit.

[0099] In an implementation manner, the transmitting the downlink reference signal burst includes:

[0100] According to the information related to the first downlink reference signal, a plurality of downlink reference signals in frequency division multiplexing of the first mode are transmitted.

[0101] In an implementation manner, the information related to the first downlink reference signal includes predefined frequency information, and the frequency information is related to the first frequency, or

[0102] The information related to the first downlink reference signal is obtained according to configuration information related to the first mode, and the information related to the first downlink reference signal is related to at least one of the first frequency, the first frequency range, or a first frequency offset of the first frequency relative to a first reference frequency, or the first reference frequency.

[0103] In an implementation manner, the first reference frequency is one of the following: a frequency reference position related to the frequency domain resource; a specified frequency; a frequency of a reference signal related to the UE.

[0104] In an implementation manner, the reference signal related to the UE includes a signal for activating the UE to receive the third downlink reference signal or a signal for waking up the UE.

[0105] In an implementation manner, the configuration information related to the first mode includes at least one of the following: second pattern related information corresponding to the first mode, configuration parameter information of the downlink reference signal in the first mode, and quantity information of the downlink reference signals in frequency division multiplexing in the first mode.

[0106] In an implementation manner, the second pattern includes Y downlink reference signals in frequency division multiplexing in one time unit, or Y downlink reference signals in frequency division multiplexing in a plurality of time units.

[0107] In an implementation, the plurality of downlink reference signals in the first pattern are indexed in a frequency domain first and time domain second manner, or in a time domain first and frequency domain second manner.

[0108] In an implementation, a frequency domain interval between adjacent downlink reference signals in the first pattern is 0, or a predefined or preconfigured first frequency domain unit interval.

[0109] In an implementation, the first frequency domain unit interval is predefined, or transmitted through one of a PBCH, a SIB1 PDCCH, a SIB1 PDSCH.

[0110] In an implementation, the plurality of patterns in the first pattern correspond to a same frequency domain unit interval, or different patterns in the first pattern correspond to different frequency domain unit intervals.

[0111] In an implementation, the configuration parameter information of the downlink reference signals in the first pattern comprises at least one of: a number of the downlink reference signals in the first pattern, a number of time domain units occupied, a number of frequency domain units occupied.

[0112] In an implementation, the configuration parameter information of the downlink reference signals in the first pattern is related to a frequency of the system.

[0113] In an implementation, all of the downlink reference signals in the first pattern correspond to a same subcarrier spacing.

[0114] In an implementation, the second pattern related information corresponding to the first pattern is determined through high layer signaling, or is related to a frequency of the system.

[0115] In an implementation, the configuration information related to the first pattern is transmitted through at least one of: a broadcast channel PBCH; a PDCCH or a PDSCH related to a system information block; RRC signaling; a signal for activating the UE to receive a third downlink reference signal or a signal for waking up the UE.

[0116] In an implementation, the configuration information related to the first pattern is indicated through sequence information of the signal for activating the UE to receive a third downlink reference signal or the signal for waking up the UE.

[0117] In an implementation, the Y frequency division multiplexed downlink reference signals are a plurality of SSBs.

[0118] In an implementation, the Y frequency division multiplexed downlink reference signals are reference signals dedicated for beam management.

[0119] The first mode-related configuration information further includes: pattern-related information of reference signals dedicated to beam management, resource configuration information of reference signals dedicated to beam management.

[0120] In an implementation manner, the first mode-related configuration information is transmitted through at least one of the following: PBCH, SIB1 PDCCH, SIB1 PDSCH, MSG2 PDCCH, MSG2 PDSCH.

[0121] In an implementation manner, the pattern-related information includes at least one of the following: a number of frequency domain units occupied by the reference signals dedicated to beam management, a number of time domain units, a total number of reference signals dedicated to beam management.

[0122] In an implementation manner, the resource configuration information includes at least one of the following: a time domain starting position of the dedicated reference signals, a frequency domain starting position, an offset from a frequency domain reference point, a time domain period.

[0123] In an implementation manner, the first mode-related configuration information further includes at least one of the following: information indicating whether the downlink reference signals are transmitted through the first mode; measurement window configuration information; a type of measurement value; resource configuration of measurement reporting.

[0124] In an implementation manner, the method further includes: transmitting information related to initial access through a plurality of downlink reference signals in frequency division multiplexing of the first mode,

[0125] The information related to initial access includes at least one of the following:

[0126] A frequency offset between the frequency domain resource related to the system information block and one of the following: a received downlink reference signal, a first downlink reference signal in the first mode, a downlink reference signal with a smallest index in the first mode, or a downlink reference signal with a largest index in the first mode;

[0127] Information related to uplink and / or downlink frequency domain resources for initial access;

[0128] Information related to a minimum channel bandwidth.

[0129] In an implementation manner, the method further includes: transmitting a second frequency offset quantity through the plurality of downlink reference signals,

[0130] The second frequency resource offset quantity is used to determine a second frequency reference position related to uplink transmission resources.

[0131] In an implementation, the second frequency offset includes a frequency offset relative to the first resource block, the first resource block being determined based on the common resource block and a frequency domain unit with a lowest index in the first pattern.

[0132] In an implementation, the second frequency offset includes a plurality of frequency offsets corresponding to a plurality of frequency division multiplexed downlink reference signals in the first pattern.

[0133] In an implementation, the uplink signal includes a PRACH, a PUSCH, or a PUCCH.

[0134] According to an embodiment of the disclosure, a user equipment (UE) is provided, comprising:

[0135] a transceiver configured to transmit and / or receive signals;

[0136] a controller configured to control the UE to perform the method according to the embodiments of the disclosure.

[0137] According to an embodiment of the disclosure, a network device is provided, comprising:

[0138] a transceiver configured to transmit and / or receive signals;

[0139] a controller configured to control the network device to perform the method according to the embodiments of the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0140] Figure 1 A wireless network according to various embodiments of the disclosure is illustrated;

[0141] Figure 2a and Figure 2b An example wireless transmit and receive path according to the disclosure is illustrated;

[0142] Figure 3a An example user equipment according to the disclosure is illustrated, and Figure 3b An example base station according to the disclosure is illustrated;

[0143] Figure 4 A schematic flowchart of random access is illustrated;

[0144] Figure 5 A frequency domain SSB pattern (N=3) is illustrated;

[0145] Figure 6 A frequency domain SSB pattern (N=4) is illustrated;

[0146] Figure 7 A frequency domain and time domain SSB pattern 1 (N=X*Y=2*3=6) is illustrated;

[0147] Figure 8 Frequency and time domain SSB pattern 2 (N = X x Y = 2 x 4 = 8) is shown;

[0148] Figure 9 Frequency and time domain SSB pattern 3 (N = X x Y = 2 x 3 = 6) is shown;

[0149] Figure 10 Frequency and time domain SSB pattern 4 (N = X x Y = 2 x 4 = 8) is shown;

[0150] Figure 11 Frequency reference point and frequency offset relative to a frequency domain SSB burst are shown;

[0151] Figure 12 Single frequency reference point and multiple frequency offsets relative to a frequency domain SSB burst are shown;

[0152] Figure 13 A structural diagram of a user equipment (UE) according to an embodiment of the present disclosure is shown; and

[0153] Figure 14 A structural diagram of a network equipment according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0154] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. The description includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes, modifications, and improvements can be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions can be omitted for clarity and conciseness.

[0155] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0156] It should be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces.

[0157] The term "include" or "may include" refers to the presence of a corresponding disclosed function, operation, or component in various embodiments of the disclosure, rather than limiting the presence of one or more additional functions, operations, or features. In addition, the term "include" or "have" can be interpreted to mean certain characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof, but should not be interpreted as excluding the possibility of the presence of one or more other characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0158] The term "or" used in various embodiments of the disclosure includes any listed terms and all combinations thereof. For example, "A or B" can include A, can include B, or can include both A and B.

[0159] Unless defined differently, all terms (including technical or scientific terms) used in the disclosure have the same meaning as understood by a person skilled in the art to which the disclosure pertains. Common terms as defined in a dictionary are interpreted to have meanings consistent with those in the context of the relevant technical field, and should not be ideally or excessively formalized, unless explicitly defined in the disclosure.

[0160] The technical solutions of the embodiments of the disclosure can be applied to various communication systems, such as a global system for mobile communications (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a universal mobile telecommunications system (UMTS), a worldwide interoperability for microwave access (WiMAX) communication system, a 5th generation (5G) system or a new radio (NR), and the like. In addition, the technical solutions of the embodiments of the disclosure can be applied to future-oriented communication technologies.

[0161] Figure 1An example wireless network 100 in accordance with various embodiments of the present disclosure is shown. Figure 1 The embodiment of the wireless network 100 shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 could be used without departing from the scope of this disclosure.

[0162] The wireless network 100 includes a gNodeB (gNB) 101, a gNB 102, and a gNB 103. The gNB 101 communicates with the gNB 102 and the gNB 103. The gNB 101 also

[0163] Depending on the network type, other well-known terms can be used instead of “gNodeB” or “gNB,” such as “base station” or “access point.” For the sake of convenience, the terms “gNodeB” and “gNB” are used in this patent document to refer to the network infrastructure components that provide wireless access to remote terminals. Also, depending on the network type, other well-known terms can be used instead of “user equipment” or “UE,” such as “mobile station” or “subscriber station” or “remote terminal” or “wireless terminal” or “user device.” For the sake of convenience, the terms “user equipment” and “UE” are used in this patent document to refer to remote wireless equipment that wirelessly accesses a gNB, whether the UE is a mobile device (such as a mobile telephone or smartphone) or what is commonly considered a fixed device (such as a desktop computer or vending machine).

[0164] The gNB 102 provides wireless broadband access to the network 130 for a first plurality of user equipment (UE) within a coverage area 120 of the gNB 102. The first plurality of UEs includes a UE 111, which can be located in a small business (SB); a UE 112, which can be located in an enterprise (E); a UE 113, which can be located in a WiFi hotspot (HS); a UE 114, which can be located in a first residence (R); a UE 115, which can be located in a second residence (R); and a UE 116, which can be a mobile device (M), such as a cell phone, a wireless laptop, a wireless PDA, or the like. The gNB 103 provides wireless broadband access to the network 130 for a second plurality of UEs within a coverage area 125 of the gNB 103. The second plurality of UEs includes the UE 115 and the UE 116. In some embodiments, one or more of the gNBs 101-103 can communicate with each other and with the UEs 111-116 using 5G, long term evolution (LTE), LTE-A, WiMAX, or other advanced wireless communication techniques.

[0165] Dotted lines show the approximate extents of the coverage areas 120 and 125, which are shown as approximately circular for the purposes of illustration and explanation only. It should be clearly understood that the coverage areas associated with gNBs, such as the coverage areas 120 and 125, can have other shapes, including irregular shapes, which can depend on the configuration of the gNBs and variations in the radio environment associated with natural and man-made obstructions.

[0166] As described in more detail below, one or more of the gNBs 101, 102, and 103 include a 2D antenna array as described in embodiments of the disclosure. In some embodiments, one or more of the gNBs 101, 102, and 103 support codebook design and structure for systems with 2D antenna arrays.

[0167] Although Figure 1 various changes can be made to Figure 1 wireless network 100. For example, the wireless network 100 could include any number of gNBs and any number of UEs in any suitable arrangement. Also, the gNB 101 could communicate directly with any number of UEs and provide those UEs access to the network 130. Similarly, each gNB 102-103 could communicate directly with the network 130 and provide UEs access to the network 130. Further, the gNBs 101, 102, and / or 103 could provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0168] Figure 2a and Figure 2b Example transmit and receive paths are shown in accordance with the present disclosure. In the following description, the transmit path 200 can be described as implemented at a gNB (such as the gNB 102), and the receive path 250 can be described as implemented at a UE (such as the UE 116). However, it is to be understood that the receive path 250 can be implemented at a gNB, and the transmit path 200 can be implemented at a UE. In some embodiments, the receive path 250 is configured to support codebook design and structure for systems with 2D antenna arrays as described in embodiments of the disclosure.

[0169] The transmit path 200 includes a channel coding and modulation block 205, a serial-to-parallel (S-to-P) block 210, a size N inverse fast Fourier transform (IFFT) block 215, a parallel-to-serial (P-to-S) block 220, an add cyclic prefix block 225, and a frequency up-converter (UC) 230. The receive path 250 includes a frequency down-converter (DC) 255, a remove cyclic prefix block 260, a serial-to-parallel (S-to-P) block 265, a size N fast Fourier transform (FFT) block 270, a parallel-to-serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0170] In the transmit path 200, the channel coding and modulation block 205 receives a set of information bits, applies coding (such as low-density parity check (LDPC) coding), and modulates the input bits (such as utilizing quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulation symbols. The serial-to-parallel (S-to-P) block 210 converts (such as de-multiplexes) the serial modulated symbols to parallel data in order to generate N parallel symbol streams, where N is the number of IFFT / FFT points in the gNB 102 and the UE 116. The size N IFFT block 215 performs an IFFT operation on the N parallel symbol streams to generate time-domain output signals. The parallel-to-serial block 220 converts (such as multiplexes) the parallel time-domain output symbols from the size N IFFT block 215 in order to generate a serial time-domain signal. The add cyclic prefix block 225 inserts a cyclic prefix to the time-domain signal. The frequency up-converter 230 modulates (such as up-converts) the output of the add cyclic prefix block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at baseband before conversion to the RF frequency.

[0171] The RF signals transmitted from the gNB 102 arrive at the UE 116 after passing through the wireless channel, and the reverse operation to that performed at the gNB 102 is performed at the UE 116. The frequency down-converter 255 down-converts the received signal to baseband frequency, and the remove cyclic prefix block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. The serial-to-parallel block 265 converts the time-domain baseband signal to parallel time-domain signals. The size N FFT block 270 performs the FFT algorithm to generate N parallel frequency-domain signals. The parallel-to-serial block 275 converts the parallel frequency-domain signals to a sequence of modulated data symbols. The channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0172] Each of gNBs 101-103 can implement a transmit path 200 similar to that shown in FIG. 2 to transmit on the downlink to UEs 111-116, and can implement a receive path 250 similar to that shown in FIG. 2 to receive on the uplink from UEs 111-116. Similarly, each of UEs 111-116 can implement a transmit path 200 to transmit on the uplink to gNBs 101-103, and can implement a receive path 250 to receive on the downlink from gNBs 101-103.

[0173] Figure 2a and Figure 2b Each of the components shown in FIGS. 2-3 can be implemented using only hardware, or using a combination of hardware and software / firmware. As a particular example, Figure 2a and Figure 2b At least some of the components shown in FIGS. 2-3 can be implemented in software, while others can be implemented by configurable hardware or a mixture of software and configurable hardware. For example, FFT blocks 270 and IFFT blocks 215 can be implemented as configurable software algorithms, where the value of the number of points N can be modified depending on the implementation.

[0174] Also, although described as using FFTs and IFFTs, this is illustrative only and should not be construed as limiting the scope of the disclosure. Other types of transforms could be used, such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions. It will be appreciated that for DFT and IDFT functions, the value of the variable N can be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of the variable N can be any integer that is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0175] Although Figure 2a and Figure 2b show examples of wireless transmit and receive paths, various changes can be made to Figure 2a and Figure 2b For example, Figure 2a and Figure 2b Various components in FIGS. 2-3 can be combined, further subdivided, or omitted and additional components can be added according to particular needs. Also, Figure 2a and Figure 2b are intended to represent examples of the types of transmit and receive paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0176] Figure 3a An example UE 116 according to this disclosure is shown in FIG. 4. Figure 3a The embodiment of the UE 116 shown in FIG. 4 is for illustration only and Figure 1The UEs 111-115 can have the same or similar configuration. However, UEs have a wide variety of configurations, and Figure 3a The scope of the disclosure is not limited to any particular implementation of a UE.

[0177] The UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, transmit (TX) processing circuitry 303, a microphone 304, and receive (RX) processing circuitry 305. The UE 116 also includes a speaker 306, a controller / processor 307, an input / output (I / O) interface 308, input device(s) 309, a display 310, and a memory 311. The memory 311 includes an operating system (OS) 312 and one or more applications 313.

[0178] The RF transceiver 302 receives, from the antenna 301, an incoming RF signal transmitted by a gNB of the wireless network 100. The RF transceiver 302 down-converts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is sent to the RX processing circuitry 305, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. The RX processing circuitry 305 transmits the processed baseband signal to the speaker 306, such as for voice data, or to the controller / processor 307, such as for web browsing data, for further processing.

[0179] The TX processing circuitry 303 receives analog or digital voice data from the microphone 304, or other outgoing baseband data (such as web access data, e-mail, or interactive video game data) from the controller / processor 307. The TX processing circuitry 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 302 receives the outgoing processed baseband or IF signal from the TX processing circuitry 303 and up-converts it to an RF signal that is transmitted via the antenna 301.

[0180] The controller / processor 307 can include one or more processors or other processing devices and execute the OS 312 stored in the memory 311 in order to control the general operation of the UE 116. For example, the controller / processor 307 can control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceiver 302, the RX processing circuitry 305, and the TX processing circuitry 303, in accordance with well-known principles. In some embodiments, the controller / processor 307 includes at least one microprocessor or microcontroller.

[0181] The controller / processor 307 is also capable of executing other processes and programs resident in the memory 311, such as operations for channel quality measurement and reporting for systems with 2D antenna arrays as described in the embodiments of the present disclosure. The controller / processor 307 is capable of

[0182] The controller / processor 307 is also coupled to the input device 309 and the display 310. The operator of the UE 116 can use the input device 309 to enter data into the UE 116. The display 310 can be a liquid crystal display or other display capable of rendering text and / or at least limited graphics, such as from web sites. The memory 311 is coupled to the controller / processor 307. The memory 311, can include both random access memory (RAM) and read only memory (ROM). The memory 311 stores data and software programs used by the controller / processor 307.

[0183] Although Figure 3a various changes can be made to Figure 3a the example of UE 116 shown. Figure 3a For example, various components in Figure 3a may be combined, further subdivided, or omitted and additional components can be added according to particular needs. As a specific example, the controller / processor 307 could be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Also, while the UE 116 is illustrated as a mobile phone or smart phone, the UE can be configured to operate as other types of mobile or stationary devices.

[0184] Figure 3b An example gNB 102 according to the present disclosure is illustrated in FIG. 3. Figure 3b The embodiment of the gNB 102 illustrated in FIG. 3 is for illustration only and Figure 1 other gNBs could have the same or a similar configuration. However, gNBs come in a wide variety of configurations, and Figure 3b the scope of the present disclosure is not limited to any particular implementation of a gNB. It should be noted that the gNBs 101 and 103 can include the same or a similar configuration as the gNB 102.

[0185] As Figure 3b indicated in FIG. 10B, the gNB 102 includes multiple antennas 370a-370n, multiple RF transceivers 372a-372n, transmit (TX) processing circuitry 374, and receive (RX) processing circuitry 376. In some embodiments, one or more of the multiple antennas 370a-370n include a 2D antenna array. The gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0186] The RF transceivers 372a-372n receive, from the antennas 370a-370n, incoming RF signals such as signals transmitted by UEs or other gNBs. The RF transceivers 372a-372n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to the RX processing circuitry 376, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. The RX processing circuitry 376 transmits the processed baseband signals to the controller / processor 378 for further processing.

[0187] The TX processing circuitry 374 receives analog or digital data (such as voice data, web data, e-mail, or interactive video game data) from the controller / processor 378. The TX processing circuitry 374 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. The RF transceivers 372a-372n receive the outgoing processed baseband or IF signals from the TX processing circuitry 374 and up-convert the baseband or IF signals to RF signals that are transmitted via the antennas 370a-370n.

[0188] The controller / processor 378 can include one or more processors or other processing devices to manage the overall operation of the gNB 102. For example, the controller / processor 378 can control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceivers 372a-372n, the RX processing circuitry 376, and the TX processing circuitry 374, in accordance with well-known principles. The controller / processor 378 can support additional functions as well, such as more advanced wireless communication functions. For instance, the controller / processor 378 can perform BIS processes, such as by a blind interference sensing (BIS) algorithm, and decode received signals with interference subtracted. The controller / processor 378 can support any of a wide variety of other functions as well. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0189] The controller / processor 378 is also capable of executing programs and other processes resident in the memory 380, such as an OS. The controller / processor 378 is also capable of supporting channel quality measurements and reporting for systems with 2D antenna arrays as described in the embodiments of the present disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTC. The controller / processor 378 is capable of moving data into or out of memory 380 as required by the executing processes.

[0190] The controller / processor 378 is also coupled to the backhaul or network interface 382. The backhaul or network interface 382 allows the gNB 102 to communicate with other devices or systems over a backhaul connection or over a network. The backhaul or network interface 382 can support communications over any suitable wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system such as one supporting 5G or New Radio Access Technology, or NR, LTE, or LTE-A, the backhaul or network interface 382 can allow the gNB 102 to communicate with other gNBs over a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the backhaul or network interface 382 can allow the gNB 102 to communicate to

[0191] The memory 380 is coupled to the controller / processor 378. The portion of memory 380 could include RAM, and the other portion of memory 380 could include flash memory or other ROM. In certain embodiments, a plurality of instructions that are part of a BIS algorithm are stored in memory. The plurality of instructions are configured to cause the controller / processor 378 to perform the BIS process and decode a received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0192] As described in more detail below, the transmit and receive paths of the gNB 102, implemented using the RF transceivers 372a-372n, TX processing circuitry 374, and / or RX processing circuitry 376, support communication with an aggregation of FDD cells and TDD cells.

[0193] Although Figure 3b One example of a gNB 102 is shown, but Figure 3b various changes can be made Figure 3aEach of the components illustrated in FIG. 3 can comprise multiple discrete physical components or a single integrated physical component (e.g., as an ASIC). For example, controller / processor 378 of the gNB 102 can comprise a single or multiple microprocessors. As another example, the TX processing circuitry 374 and / or the RX processing circuitry 376 can comprise a single or multiple microprocessors. As another example, the access point can include many backhaul or network interfaces 382, and the controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, while shown as including a single instance of TX processing circuitry 374 and a single instance of RX processing circuitry 376, the gNB 102 can include multiple instances of each (such as one per RF transceiver pair).

[0194] The time domain unit (also referred to as time unit) in this application can be: one OFDM symbol, one OFDM symbol group (composed of multiple OFDM symbols), one slot, one slot group (composed of multiple slots), one subframe, one subframe group (composed of multiple subframes), one system frame, one system frame group (composed of multiple system frames); it can also be an absolute time unit, such as 1 millisecond, 1 second, etc.; the time unit can also be a combination of multiple granularities, such as N1 slots plus N2 OFDM symbols.

[0195] The frequency domain unit (also referred to as frequency unit) in this application can be: one subcarrier, one subcarrier group (composed of multiple subcarriers), one resource block (resource block, RB), also referred to as physical resource block (physical resource block, PRB), one resource block group (composed of multiple RBs), one bandwidth part (bandwidth part, BWP), one bandwidth part group (composed of multiple BWPs), one frequency band / carrier, one frequency band group / carrier group; it can also be an absolute frequency domain unit, such as 1 hertz, 1 kilohertz, etc.; the frequency domain unit can also be a combination of multiple granularities, such as M1 PRBs plus M2 subcarriers.

[0196] Exemplary embodiments of the present disclosure are further described below with reference to the accompanying drawings.

[0197] The text and drawings are provided only as examples to assist the reader in understanding the disclosure. They are not intended to, and should not be construed as, limiting the scope of the disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art that changes can be made in the embodiments and examples without departing from the scope of the disclosure.

[0198] It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, "connected," "coupled," and / or "coupling," can include both direct connections and / or indirect connections (i.e., via one or more other elements). As used herein, "connection" or "coupling" can include a wireless connection or a wireless coupling. As used herein, the term "and / or" comprises all of the associated listed items, one or more of the associated listed items, and all combinations of the associated listed items.

[0199] It will be further understood that, as used herein, the terms "comprises" and / or "comprising," while they can be used in the context of compositions of matter, preferably, are not used in a restrictive sense, for example, to denote the presence of stated features, integers, steps or components thereof, but to denote the presence at least the stated features, integers, steps or components thereof. As used herein, unless otherwise stated, the term "or" includes both exclusive and inclusive or. As used herein, unless otherwise stated, the term "and / or" includes all of the associated listed items, one or more of the associated listed items, and all combinations of the associated listed items.

[0200] Those skilled in the art of the technology will appreciate that, as used herein, the term "terminal" or "terminal device" includes both devices that are solely wireless signal receivers, devices that are solely wireless signal receivers without transmit capability, and devices that have receive and transmit hardware enabling two-way communications over a two-way communications link. Such devices can include cellular or other communications devices with or without a multi-line display; Personal Communications Service (PCS) devices that can combine a voice, data processing, facsimile, and / or data communications capabilities; PDA's (Personal Digital Assistants) that can include a radio frequency receiver and / or a pager, Internet / intranet access, a web browser, a calendar, and / or a global positioning system (GPS) receiver; and conventional laptop computers or other devices with a radio frequency receiver and / or a wireless communications interface. As used herein, the term "terminal" or "terminal device" can be portable, transportable, installed in a vehicle (aeronautical, maritime, and / or land), or adapted for and / or configured for local and / or distributed operation on Earth and / or in space, anywhere. As used herein, the term "terminal" or "terminal device" can also be a communication terminal, an Internet terminal, a music / video playing terminal, such as a PDA, a Mobile Internet Device (MID), and / or a mobile phone with music / video playing function, a smart television, a set-top box, and the like.

[0201] The term "transmit" in the present disclosure can be used interchangeably with "communicate", "report", "inform", and the like, without departing from the scope of the present disclosure.

[0202] The text and drawings are provided only as examples to assist the reader in understanding the disclosure. They are not intended to, and should not be interpreted to, limit the scope of the disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art based upon the disclosure provided herein that modifications can be made within the scope of the disclosure.

[0203] The transmission links of the wireless communication system mainly include the downlink communication link from the 5G gNB to the User Equipment (UE) and the uplink communication link from the UE to the network.

[0204] The nodes used for positioning measurement in current wireless communication system, for example, include: UE initiating a positioning request message, LMF (Location Management Function) for UE positioning and positioning assistance data delivery, gNB or TRP (Transmission-Reception Point) broadcasting positioning assistance data and performing uplink positioning measurement, and UE for downlink positioning measurement. In addition, the method of the present application can also be extended to other communication systems, such as V2X (Vehicle-to-Everything) communication, for example, sidelink communication, at this time the transmission-reception point or UE can be any device in V2X.

[0205] The transmission in the wireless communication system includes: transmission from a base station (gNB) to a user equipment (UE, User Equipment), referred to as downlink transmission, and the corresponding time slot is referred to as a downlink time slot; transmission from the UE to the base station, referred to as uplink transmission, and the corresponding time slot is referred to as an uplink time slot.

[0206] In the downlink communication of a wireless communication system, the system periodically transmits synchronization signals and broadcast channels to users through synchronization signal blocks (SSB, synchronization signal / Physical Broadcating channel block), and the period is a synchronization signal block period (SSB periodicity) or a synchronization signal block burst period (SSB burst periodicity). Meanwhile, the base station configures a random access configuration period (Physical random access channel configuration period, PRACH configuration period), in which a certain number of random access transmission opportunities (also called random access opportunities, PRACH transmission occasions, ROs) are configured. These configured ROs are subjected to the judgment of certain validity rules to obtain valid ROs; and all SSBs can be mapped to corresponding valid ROs within an association period (a certain length of time), and in an SSB-to-RO mapping cycle, all SSBs in an SSB period can be completely mapped to the required random access resources. There can be one or more mapping cycles in a mapping period. An SSB-to-RO mapping pattern period contains one or more mapping periods, and the SSB-to-RO mapping pattern in each mapping pattern period is the same.

[0207] In a New Radio (NR) communication system, the performance of random access directly affects the user experience before radio resource control establishment, such as in a random access procedure. In a conventional wireless communication system, such as LTE and LTE-Advanced, or in a 5G or NR system, a random access procedure is applied to multiple scenarios, such as establishing an initial link, cell switching, reestablishing an uplink, RRC connection reestablishment, and the like, and is divided into contention-based random access and contention-free random access according to whether a user occupies preamble sequence resources. In contention-based random access, each user selects a preamble sequence from the same preamble sequence resources in the process of attempting to establish an uplink, and multiple users may select the same preamble sequence to send to a base station. Therefore, a conflict resolution mechanism is an important research direction in random access, and how to reduce the conflict probability and how to quickly resolve the conflict that has occurred are key indicators that affect the performance of random access.

[0208] Figure 4 A schematic diagram of a 4-step random access procedure is shown. For example, a contention-based random access procedure is divided into four steps, as shown in Figure 4 In the first step, a user randomly selects a preamble sequence from a preamble sequence resource pool and sends it to a base station. The base station performs correlation detection on the received signal to identify the preamble sequence sent by the user. In the second step, the base station sends a random access response (RAR) to the user, which contains a random access preamble sequence identifier, a timing advance command determined according to a time delay estimate between the user and the base station, a temporary cell radio network temporary identifier (C-RNTI), and time-frequency resources allocated for the next uplink transmission of the user. The user searches for a PDCCH carrying the feedback based on a RA-RNTI associated with the PRACH occasion in which the random access preamble sequence is sent. The RA-RNTI associated with the PRACH occasion (RO) is calculated according to the following formula:

[0209] RA-RNTI = 1 + s_id + 14 × t_id + 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id,

[0210] where s_id is the index of the first OFDM symbol of the PRACH occasion (0≤ s_id < 14), t_id is the index of the first slot of the PRACH occasion in system frame (0≤ t_id < 80), where for μ = {0, 1, 2, 3}, the subcarrier spacing used to determine t_id is based on the value of μ as specified in TS 38.211 section 5.3.2, for μ = {5, 6}, t_id is the index of the 120 kHz slot containing the PRACH occasion in the system frame (0≤ t_id < 80), f_id is the index of the PRACH occasion in the frequency domain (0≤ f_id < 8), ul_carrier_id is the UL carrier used for random access preamble transmission (0 for normal uplink, NUL, carrier and 1 for SUL carrier).

[0211] In the third step, the user sends a third message (message 3, Msg3) to the base station according to the information in the RAR. The Msg3 contains the user terminal identifier and the RRC link request, etc. The user terminal identifier is unique to the user and is used to solve the conflict. In the fourth step, the base station sends a conflict resolution identifier to the user, which contains the user terminal identifier that wins in the conflict resolution. After detecting the identifier of the user, the user upgrades the temporary C-RNTI to the C-RNTI and sends an ACK signal to the base station, completing the random access process and waiting for the scheduling of the base station. Otherwise, the user will start a new random access process after a delay.

[0212] For the non-contention-based random access process, the user can be allocated a preamble sequence since the base station knows the user identifier. Therefore, the user does not need to randomly select a sequence when sending the preamble sequence, but will use the allocated preamble sequence. After detecting the allocated preamble sequence, the base station will send a corresponding random access response, including timing advance and uplink resource allocation, etc. After receiving the random access response, the user considers that the uplink synchronization has been completed and waits for further scheduling of the base station. Therefore, the non-contention-based random access process only contains two steps: step one is to send the preamble sequence; and step two is to send the random access response.

[0213] For example, the random access process is applicable to the following scenarios:

[0214] 1. Initial access in RRC_IDLE;

[0215] 2. Reestablishment of RRC connection;

[0216] 3. Cell handover;

[0217] 4. Downlink data arrival in RRC_CONNECTED and request for random access procedure (when the uplink is not synchronized);

[0218] 5. Uplink data arrives in RRC connected state and requests random access procedure (when uplink is in non-synchronization or PUCCH resource is not allocated to scheduling request);

[0219] 6. Positioning.

[0220] In the access of a wireless communication system, a UE needs to find a working (transmitting and / or receiving) beam to communicate with a base station. In a traditional method, the UE receives multiple reference signals, such as SSB bursts, transmitted by the base station in a time-division multiplexing manner, where the multiple reference signals can correspond to different beam directions. The UE determines a suitable downlink beam direction by measuring different reference signals. However, the time delay of this method is relatively large. For example, the UE usually needs to measure multiple SSBs to obtain sufficient information to access the system. Therefore, how to improve the design to enable fast access to a suitable (transmitting or receiving) beam direction is a problem to be solved. On the other hand, considering the difference in UE capabilities, for example, some UEs have the ability to receive large bandwidth signals, and accessing the system by receiving only time-division multiplexed SSBs cannot fully utilize the capabilities of the UE, and UEs capable of receiving large bandwidth signals need to experience the same statistical time delay as UEs capable of receiving small bandwidth signals to access the system in a basically similar way.

[0221] In an embodiment of the present disclosure, a method and device for system access will be introduced. The method designs a reference signal burst including multiple reference signals in the frequency domain in the same time unit, which are frequency-division multiplexed, by considering the technology of Joint Phase-Time Arrays (JPTA) correlation, and applies to signal transmission at the transmitting end and / or signal reception at the receiving end. In this way, the difference in UE capabilities in receiving signal bandwidth can be considered, and the capabilities of UEs capable of receiving large bandwidth signals can be fully utilized, so that UEs, such as UEs with large bandwidth signal receiving capability, can receive large bandwidth signals composed of frequency-division multiplexed SSBs and access the system with a large initial bandwidth accordingly, so that such UEs can access the system more quickly. In addition, according to the method of the present disclosure, after the UE determines the bandwidth for communication according to the frequency-division multiplexed SSBs, the bandwidth can be used for initial access and subsequent communication without the need to determine the bandwidth again. According to the method provided in the embodiment of the present disclosure, the base station and / or the UE can quickly determine the suitable signal transmission direction and / or reception direction and / or quickly access the system, or can efficiently determine the bandwidth for communication. In the present disclosure, the scheme is described by considering the technology of Joint Phase-Time Arrays, but this is only exemplary and is intended to facilitate the inventor to fully describe the technical concept and technical principle, and is not intended to limit the principle of the present disclosure to only the system access method using Joint Phase-Time Arrays.

[0222] It can be understood that, although most of the description of the present disclosure describes the system access scheme by considering the design improvement of the JPTA, the principles disclosed in the present disclosure can be equally applied to scenarios using other technical solutions. For example, the present disclosure can also be applicable to scenarios where the beam codebook design is optimized, or scenarios where multiple antenna panels are used.

[0223] The system access in the present application can include two parts: the transmission and / or reception of general downlink reference signals (gDRS), and / or the transmission and / or reception of general uplink reference signals (gURS). In the present application, SSB is taken as an example to describe the scheme related to system access as a general downlink reference signal, but this is only exemplary, and SSB can be replaced by other gDRS, such as CSI-RS, PRS, etc. In the present application, PRACH is taken as an example to describe the scheme related to system access as a general uplink reference signal, but this is only exemplary, and PRACH can be replaced by other gURS, such as SRS, etc.

[0224] It should be noted that the BWP (bandwidth part) involved in the present application is only an example and can be replaced by a frequency domain resource, which can be a frequency domain resource on one carrier or a frequency domain resource occupying multiple carriers, which is not limited here.

[0225] The method provided by the present application can include one or a combination of the following operations:

[0226] ● The UE receives the gDRS transmitted by the network device (e.g., base station, etc.) Wherein:

[0227] In one implementation method, the gDRS can be an SSB signal, and the UE receives multiple SSBs occupying different frequency domain units (frequency division multiplexed SSBs) in the same time unit, wherein the frequency domain unit is the number of frequency domain PRBs occupied by one SSB (for example, 20 PRBs), and the time unit is the number of time domain symbols occupied by one SSB (for example, 4).

[0228] In one implementation method, the above frequency division multiplexed SSB belongs to a part of the SSB pattern, and the SSB pattern can be pre-configured by the protocol or configurable.

[0229] ◆Note that in the present application, the SSB pattern formed by SSBs (e.g., only time-division multiplexed SSBs, or SSBs referred to as non-frequency-division multiplexed SSBs) transmitted on N time units and the same frequency domain unit is referred to as a first type of SSB pattern (or written as a first pattern), and in the first type of SSB pattern, the total number of SSBs N is the same as the number of time units X in the SSB pattern, N=X (e.g., N=4, 8, 64, …), and the number of frequency domain SSBs Y=1; the SSB pattern including multiple SSBs (or referred to as frequency-division multiplexed SSBs) in the frequency domain is referred to as a second type of SSB pattern (or written as a second pattern or a first mode), and in the second type of SSB pattern, the number of frequency domain SSBs Y is not equal to 1, for example, Y is an integer greater than or equal to 2, and the number of time domain SSBs X (or referred to as the number of time domain units occupied by SSBs X) can be 1 or greater than 1, and the total number of SSBs N in the SSB pattern is N=X*Y, wherein N, X, and Y are positive integers;

[0230] In addition, in the present application, the SSB belonging to the second type of SSB burst is referred to as a second type of SSB, and the description in the present application does not explicitly describe the first type or the second type of SSB, which means the second type of SSB, unless it is explicitly not the case according to the context;

[0231] ◆In an implementation method, the SSB pattern (e.g., the second type of SSB pattern) can include one or a combination of the following:

[0232] Pattern 1: Frequency domain SSB pattern, N SSBs on N frequency domain units in one time unit (e.g., 4 OFDM symbols), wherein the N SSBs correspond to indexes that can be {0, 1, 2, …, N-1}, and the frequency domain units can be a single or multiple PRBs (e.g., 20 PRBs); the index order of the SSBs can be in ascending order according to the frequency domain unit indexes corresponding to the SSBs, that is, the SSB with index 0 corresponds to the frequency domain unit with the lowest index (frequency domain unit 0) among the N frequency domain units, and the SSB with index N-1 corresponds to the frequency domain unit with the highest index (frequency domain unit N-1) among the N frequency domain units;

[0233] -Optionally, when N is odd (1, 3, 5, 7, 9, …), taking N=3 as an example, as shown in Figure 5 , SSB#0, SSB#1, and SSB#2 are transmitted on the same time unit 0 on different frequency domain units (frequency domain units 0, 1, and 2 transmit SSB#0, SSB#1, and SSB#2, respectively);

[0234] √The index of the reference SSB (which can also be referred to as a reference downlink reference signal or a first downlink reference signal, or the reference SSB can be taken as an example of a reference downlink reference signal) in the frequency domain SSB pattern is one or a combination of the following:

[0235] • the SSB with index floor(N / 2) or (N-1) / 2 (when N=3, the reference SSB has index 1 (SSB#1));

[0236] • the SSB with the smallest SSB index (0) or the lowest frequency domain unit (when N=3, the reference SSB has index 0 (SSB#0));

[0237] • the SSB with the largest SSB index (N-1) or the highest frequency domain unit (when N=3, the reference SSB has index 2 (SSB#2));

[0238] - Optionally, when N is even (2, 4, 6, 8, 10…), for example, N=4, as shown in Figure 6 SSB#0, SSB#1, SSB#2, SSB#3 are transmitted in the same time unit 0, but in different frequency domain units (frequency domain units 0, 1, 2, 3 transmit SSB#0, SSB#1, SSB#2, and SSB#3, respectively).

[0239] √ The index of the reference SSB in the frequency domain SSB pattern is one or a combination of the following:

[0240] • the index (N / 2) or floor[(N+1) / 2] (when N=4, the reference SSB has index 2 (SSB#2));

[0241] • the index floor[(N-1) / 2] or (N-2) / 2 (when N=4, the reference SSB has index 1 (SSB#1));

[0242] • the SSB with the smallest SSB index (0) or the lowest frequency domain unit (when N=4, the reference SSB has index 0 (SSB#0));

[0243] • the SSB with the largest SSB index (N-1) or the highest frequency domain unit (when N=4, the reference SSB has index 3 (SSB#3));

[0244] Pattern 2: Frequency and time domain SSB pattern, i.e., N=X*Y SSBs in X time units and Y frequency domain units (for example, N frequency domain units are grouped), where the N SSBs correspond to indices can be {0, 1, 2, …, N-1};

[0245] - In one implementation method, the index order of the SSBs can be in the order of frequency domain first and then time domain, including

[0246] • First, the index of SSBs is incremented in the order of frequency domain units;

[0247] • Second, the index of SSBs is incremented in the order of time domain units;

[0248] √ As an example, Figure 7 The frequency domain and time domain SSB pattern of N = X × Y = 2 × 3 = 6 is shown, where the index of SSBs is sequentially incremented in the order of frequency domain first and then time domain. For example, the index of SSB corresponding to (time domain unit 0, frequency domain unit 0) is 0, the index of SSB corresponding to (time domain unit 0, frequency domain unit 1) is 1, the index of SSB corresponding to (time domain unit 0, frequency domain unit 2) is 2, …, the index of SSB corresponding to (time domain unit 1, frequency domain unit 2) is 5;

[0249] √ In one implementation method, when Y is an odd number (3, 5, 7, 9, …), the index of SSBs is in the order of frequency domain first and then time domain, taking N = X × Y = 2 × 3 = 6 as an example, as shown in Figure 7 SSB#0, SSB#1 and SSB#2 are transmitted in the same time unit 0, in different frequency domain units (frequency domain units 0, 1, 2 transmit SSB#0, SSB#1 and SSB#2 respectively); SSB#3, SSB#4 and SSB#5 are transmitted in the same time unit 1, in different frequency domain units (frequency domain units 0, 1, 2 transmit SSB#3, SSB#4 and SSB#5 respectively);

[0250] • In one implementation method, the index of the reference SSB in the frequency domain and time domain SSB pattern is one or a combination of the following:

[0251] ■The index related to the middle value of Y SSB indexes or the frequency domain unit indexes corresponding to Y SSBs in one or more time units of the X time units, for example, the index related to the middle value of Y SSB indexes or the frequency domain unit indexes corresponding to Y SSBs in the first time unit of the X time units, for example, the index is (Y-1) / 2 or floor(Y / 2), for example, when Y = 3, the index of the reference SSB is 1; or, the index related to the middle value of Y SSB indexes or the frequency domain unit indexes corresponding to Y SSBs in the X time unit of the X time units, for example, floor(Y / 2)+x*Y, or (Y-1) / 2+x*Y, where x = 0, 1, …, X-1 (when Y = 3, X = 2, the index of the reference SSB is 1 and / or 4 (SSB#1 and / or SSB#4)), where floor represents the floor function; it should be noted that the number of reference SSB indexes is greater than or equal to 1 and less than or equal to X;

[0252] ■ the index of the SSB corresponding to the minimum frequency unit index of the Y SSBs on the X time domain units (when Y = 3, X = 2, the index of the reference SSB is 0 and / or 3 (SSB#0 and / or SSB#3), it is noted that the number of the index of the reference SSB is greater than or equal to 1, less than or equal to X;

[0253] ■ the index of the SSB corresponding to the maximum frequency unit index of the Y SSBs on the X time domain units (when Y = 3, X = 2, the index of the reference SSB is 2 and / or 5 (SSB#2 and / or SSB#5), it is noted that the number of the index of the reference SSB is greater than or equal to 1, less than or equal to X;

[0254] √ In an implementation method, when Y is even (2, 4, 6, 8, 10…), the index of the SSB is in the order of frequency domain first and then time domain, for example, as shown in Figure 8 , SSB#0, SSB#1, SSB#2, SSB#3 are transmitted on the same time unit 0, in different frequency domain units (frequency domain units 0, 1, 2, 3 transmit SSB#0, SSB#1, SSB#2, SSB#3 respectively); SSB#4, SSB#5, SSB#6, SSB#7 are transmitted on the same time unit 1, in different frequency domain units (frequency domain units 0, 1, 2, 3 transmit SSB#4, SSB#5, SSB#6, SSB#7 respectively);

[0255] ● In an implementation method, the index of the reference SSB in the frequency domain and time domain SSB pattern is a combination of one or more of the following:

[0256] ■ the index of the middle value related to the Y SSB index or the frequency domain unit index corresponding to the Y SSB on one or more of the X time units, for example, the index of the middle value related to the Y SSB index on the first time unit of the X time units, for example, the index is (Y / 2) or (Y / 2)-1, for example, when Y is equal to 4, the index of the reference SSB is 2 and / or 1; or, the index of the middle value related to the Y SSB index on the X time unit of the X time units, for example, the index is (Y / 2)+x*Y or (Y / 2)-1+x*Y, where x = 0, 1, …, X-1, for example, when Y = 4, X = 2, based on (Y / 2)+x*Y, the index of the reference SSB is 2 and / or 6 (SSB#2 and / or SSB#6); or, based on (Y / 2)-1+x*Y, the index of the reference SSB is 1 and / or 5 (SSB#1 and / or SSB#5). It is noted that the number of the index of the reference SSB is greater than or equal to 1, less than or equal to X;

[0257] ■ the index of the SSB corresponding to the minimum frequency unit index among the Y SSBs on one or more time units of the X time units, for example, when Y = 4, X = 2, the index of the reference SSB is 0 and / or 4 (SSB#0 and / or SSB#4), it is noted that the number of the index of the reference SSB is greater than or equal to 1 and less than or equal to X;

[0258] ■ the index of the SSB corresponding to the maximum frequency unit index among the Y SSBs on one or more time units of the X time units, for example, when Y = 4, X = 2, the index of the reference SSB is 3 and / or 7 (SSB#3 and / or SSB#7), it is noted that the number of the index of the reference SSB is greater than or equal to 1 and less than or equal to X;

[0259] - In an implementation method, the index order of the SSBs can also be in the order of time domain first and then frequency domain, including

[0260] ● First, the index of the SSBs is in the order of increasing time units;

[0261] ● Second, the index of the SSBs is in the order of increasing frequency domain units;

[0262] √ As an example, Figure 9 a frequency domain and time domain SSB pattern is shown, where N = X × Y = 2 × 3 = 6, the index order of the SSBs is in the order of increasing time domain first and then frequency domain, for example, the index of the SSB corresponding to (time domain unit 0, frequency domain unit 0) is 0, the index of the SSB corresponding to (time domain unit 1, frequency domain unit 0) is 1, the index of the SSB corresponding to (time domain unit 0, frequency domain unit 1) is 2, …, the index of the SSB corresponding to (time domain unit 1, frequency domain unit 2) is 5;

[0263] √ In an implementation method, when Y is an odd number (1, 3, 5, 7, 9, …), the index order of the SSBs is in the order of time domain first and then frequency domain, for example, as shown in Figure 9 , SSB#0, SSB#2 and SSB#4 are transmitted on the same time unit 0, on different frequency domain units (frequency domain units 0, 1, 2 transmit SSB#0, SSB#2, SSB#4 respectively); SSB#1, SSB#3 and SSB#5 are transmitted on the same time unit 1, on different frequency domain units (frequency domain units 0, 1, 2 transmit SSB#1, SSB#3, SSB#5 respectively);

[0264] ● In an implementation method, the index of the reference SSB in the frequency domain and time domain SSB pattern is one or a combination of the following:

[0265] ■an index related to a middle value of frequency domain unit indexes corresponding to the Y SSBs on one or more time units of the X time units, for example, an index related to a middle value of frequency domain unit indexes corresponding to the Y SSBs on a first time unit of the X time units, for example, an index of N / 2-x or floor[(N-1) / 2], where x=0, 1, …, X-1, for example, when Y equals 3, X=2, N=6, the index of the reference SSBs is 2 and / or 3 (SSB#2 and / or SSB#3); or, an index related to a middle value of frequency domain unit indexes corresponding to the Y SSBs on the X time units of the X time units, for example, an index of N / 2-x or floor[(N-1) / 2]+x, where x=0, 1, …, X-1, for example, when Y=3, X=2, N=6, the index of the reference SSBs is 2 and / or 3 (SSB#2 and / or SSB#3)), where floor represents a down-rounding function, it is noted that the number of the index of the reference SSBs is greater than or equal to 1 and less than or equal to X;

[0266] ■an index of the SSB corresponding to the minimum frequency unit of the Y SSBs on one or more time units of the X time units, for example, when Y=3, X=2, the index of the reference SSBs is 0 and / or 1 (SSB#0 and / or SSB#1), it is noted that the number of the index of the reference SSBs is greater than or equal to 1 and less than or equal to X;

[0267] ■an index of the SSB corresponding to the maximum frequency unit of the Y SSBs on one or more time units of the X time units, for example, when Y=3, X=2, the index of the reference SSBs is 4 and / or 5 (SSB#4 and / or SSB#5), it is noted that the number of the index of the reference SSBs is greater than or equal to 1 and less than or equal to X;

[0268] √In an implementation method, when Y is even (2, 4, 6, 8, 10…), the index order of the SSBs is time domain first and then frequency domain, for example, when N=X*Y=2*4=8, as shown in Figure 10 , SSB#0, SSB#2, SSB#4, SSB#6 are transmitted on the same time unit 0, in different frequency domain units (frequency domain units 0, 1, 2, 3 transmit SSB#0, SSB#2, SSB#4, SSB#6 respectively); SSB#1, SSB#3, SSB#5, SSB#7 are transmitted on the same time unit 1, in different frequency domain units (frequency domain units 0, 1, 2, 3 transmit SSB#1, SSB#3, SSB#5, SSB#7 respectively);

[0269] ●In an implementation method, the index of the reference SSBs in the frequency domain and time domain SSB pattern is a combination of one or more of the following:

[0270] ■ the index of the SSB with the middle value of the N SSB indexes over the X time units, for example, the index is N / 2-1-x or Y / 2+x, where x = 0, 1, …, X-1 (when Y = 4, X = 2, N = 8, the index of the reference SSB is 2 and / or 3 (SSB#2 and / or SSB#3));

[0271] ■ the index of the SSB with the index of N / 2+x or Y+x, where x = 0, 1, …, X-1 (when Y = 4, X = 2, N = 8, the index of the reference SSB is 4 and / or 5 (SSB#4 and / or SSB#5)), it is to be noted that the number of the index of the reference SSB is greater than or equal to 1 and less than or equal to X;

[0272] ■ the index of the SSB with the minimum frequency unit index of the Y SSBs over one or more time units of the X time units, for example, when Y = 4, X = 2, the index of the reference SSB is 0 and / or 1 (SSB#0 and / or SSB#1);

[0273] ■ the index of the SSB with the maximum frequency unit index of the Y SSBs over one or more time units of the X time units, for example, when Y = 4, X = 2, the index of the reference SSB is 6 and / or 7 (SSB#6 and / or SSB#7), it is to be noted that the number of the index of the reference SSB is greater than or equal to 1 and less than or equal to X;

[0274] ◆ In an implementation method, in the second type of SSB pattern, different frequency division multiplexing SSBs (corresponding to different SSB indexes) correspond to different beams, for example, SSB#0 is transmitted with a first beam, SSB#1 is transmitted with a second beam, and SSB#2 is transmitted with a third beam;

[0275] ◆ In an implementation method, in the second type of SSB pattern, there is a 0 or G frequency domain unit interval (or written as an interval of 0 or G frequency domain units (the interval of G frequency domain units can also be referred to as the existence of a first frequency domain unit interval)) between frequency domain adjacent SSBs, the existence of the interval can reduce the interference between adjacent beams and improve the signal quality on the beam, where G is an integer greater than zero, and the value of G can be

[0276] The protocol predefines, which is applied to all second type of SSB patterns; and / or

[0277] The protocol predefines different values for different second type of SSB patterns, where different second type of SSB patterns can correspond to different X and Y values;

[0278] Configurable, can be acquired through PBCH and / or SIB1 PDCCH and / or SIB1 PDSCH;

[0279] In an implementation method, different second type SSB patterns have different frequency domain unit intervals, preferably, when the number Y of frequency division multiplexed SSBs is large (for example, Y is greater than or equal to or not less than 8), the corresponding frequency domain unit interval can be larger than the frequency domain unit interval when the Y value is small. The advantage of doing so is that when the number Y of frequency division multiplexed SSBs is large, the interference between the beams corresponding to adjacent SSBs can be more serious, so setting a larger frequency domain unit interval is beneficial to reducing the interference between the adjacent SSBs and improving the signal quality on the beam.

[0280] ◆In an implementation method, the SSB pattern corresponds to one or more of the following different parameters: the number N of SSBs, the number X of SSBs in the time domain, and the number Y of SSBs in the frequency domain. According to an embodiment of the present disclosure, the number Y of SSBs in the frequency domain in the SSB pattern can be set to an integer greater than or equal to 2, and the value of Y can be set according to different operating frequencies of the system. For example, Y can be set to an even number such as 2, 4, 8, 16, 32, 64, or Y can also be set to an odd number greater than 2; the total number N of SSBs in the SSB pattern can be set to an integer greater than or equal to 2, for example, N can be set to an even number greater than 2, or N can be set to an odd number greater than N; the number X of time units corresponding to SSBs in the SSB pattern can be set to an integer greater than or equal to 1, and the X time units in the SSB pattern can have the same or different intervals, which can be predefined or configurable; or the X time units can be consecutive; the following examples list some possible SSB pattern related parameters:

[0281] Optionally, when the system frequency is less than 3 GHz, N=4, X=1, Y=4; or, N=4, X=2, Y=2;

[0282] Optionally, when the system frequency is greater than 3 GHz and less than or equal to 6 GHz, N=8, X=1, Y=8; or, N=8, X=2, Y=4; or, N=8, X=4, Y=2;

[0283] Optionally, when the system frequency is greater than 6 GHz, N=64, X=2, Y=32; or, N=64, X=4, Y=16; or, N=64, X=8, Y=8; or, N=64, X=16, Y=4; or, N=64, X=32, Y=2;

[0284] ◆In an implementation method, in the second type of SSB pattern, the subcarrier spacing (SCS) of all SSBs is the same, which can be 15 kHz x 2 μ , where μ = 0, 1, 2, 3, 4, 5…; Alternatively, the subcarrier spacing of SSBs can also be set to be different, for example, the second type of SSB pattern includes two time domain units, the subcarrier spacing of the Y frequency division multiplexing SSBs corresponding to the first time domain unit is μ = 0 corresponding subcarrier spacing, and the subcarrier spacing of the Y frequency division multiplexing SSBs corresponding to the second time domain unit is μ = 1 corresponding subcarrier spacing;

[0285] ◆In an implementation method, the second type of SSB related configuration information can include one or more combinations of the following:

[0286] The second type of SSB frequency domain related information includes one or more combinations of the following:

[0287] - The first frequency position is used to determine the frequency position of the reference SSB;

[0288] √Optionally, the first frequency position can also be an absolute frequency position, for example, a specified GSCN and / or ARFCN (Absolute Radio Frequency Channel Number) corresponding frequency position;

[0289] √Optionally, the first frequency position can be multiple, for example, multiple first frequency positions, corresponding to the frequency positions of multiple reference SSBs, for example, two first frequency positions are second type GSCN1 and second type GSCN2 respectively; In this application, the GSCN used to determine the first type of SSB pattern is referred to as the first type GSCN, the GSCN used to determine the second type of SSB pattern is referred to as the second type GSCN, and the GSCN used to determine the pattern of beam management dedicated RS is referred to as the third type GSCN. It should be understood that the GSCN described throughout the text can also be replaced by other names or terms that can be used to determine the frequency position of the downlink reference signal, such as reference position, reference frequency, etc. The description of GSCN is only for the convenience of description and understanding, and is not intended to limit the method of the present application to only the way related to the described GSCN;

[0290] √In an implementation method, the first type of SSB can also be transmitted at the first frequency location, and the UE can determine the detected SSB as the first type of SSB or the second type of SSB through the SSB type related information included in the SSB; for example, when it is determined as the second type of SSB, the UE can consider that the second type of SSB (burst) is transmitted at the first frequency location; or the UE can determine whether the second type of SSB (burst) is transmitted at the first frequency location through the indication of the second type of SSB (burst);

[0291] - the frequency range of the first frequency location, in which the reference SSB can exist, for example, the frequency range can be the frequency range corresponding to <GSCN1~GSCN100>;

[0292] - the frequency offset or gap for indicating the frequency offset (one or more frequency domain units) of the frequency location corresponding to the reference SSB and the frequency reference point, the frequency reference point can be a specified point A or GSCN or ARFCN (with absolute frequency value indication); and / or, a specified frequency point (the frequency domain starting point of bandwidth, BWP, carrier, SSB, etc.); and / or, a frequency location related to a signal as the frequency reference point, for example, the frequency location of the reference signal for activating the UE to receive the SSB or waking up the UE (for example, the location of the center frequency point); the frequency offset can be one or more frequency domain units or GSCN or ARFCN;

[0293] - the SSB pattern or format or configuration parameter related information for determining the SSB pattern, for example, the information can indicate the index of the SSB pattern, 2^U patterns can be indicated by U bits, for example, 8 patterns can be indicated by U=3 bits, for example, '001' indicates pattern index 1, '010' indicates pattern index 2, and so on; for example, SSB pattern index 1 is an SSB pattern composed of SSBs transmitted at 1 time unit and Y=N different frequency domain units; SSB pattern index 2 is an SSB pattern composed of SSBs transmitted at 2 time units and Y=N / 2 different frequency domain units, which are only examples, and other possible SSB patterns are not described here; in addition, the pattern can be a pre-set pattern in the protocol or a pattern configured through high layer signaling;

[0294] - the configuration parameter information of the downlink reference signal in the second type of SSB burst, including at least one of the following:

[0295] - the number N of SSBs in the second type of SSB burst;

[0296] - the number X of time domain units occupied by the second type of SSB burst,

[0297] - the number Y of frequency domain units occupied by the second type of SSB burst;

[0298] - the subcarrier spacing of the second type of SSB;

[0299] - the periodicity of the transmission of the second type of SSB (SSB in the second type of SSB burst);

[0300] the indication of the second type of SSB burst (SSB frequency division multiplexed on the same time unit) indicates whether the base station has turned on the mode of transmitting the second type of SSB burst;

[0301] the number information of frequency domain SSBs, used to determine the number of frequency domain SSBs transmitted in a unit time unit (the number of symbols occupied by a single SSB);

[0302] the indication of the second type of SSB (burst), used to indicate whether the second type of SSB (burst) is transmitted within the first type of SSB transmission period;

[0303] SSB type related information, which can be indicated by 1 bit, is used to determine the type of the SSB, for example, '0' represents the first type of SSB, and '1' represents the second type of SSB; or, for example, '0' represents the second type of SSB, and '1' represents the first type of SSB;

[0304] In one implementation method, the UE can receive the second type of SSB related configuration information through at least one of the following:

[0305] the broadcast channel (PBCH);

[0306] the PDCCH or PDSCH related to the system information block, for example, the system information block can be SIB1, SIB2, SIB3, etc.;

[0307] according to the high layer RRC signaling configuration;

[0308] determined according to the received reference signal for activating the UE to receive the SSB or waking up the UE, the sequence information (such as the ID or index of the sequence) of the reference signal can indicate the second type of SSB related configuration information, and the sequence of the reference signal can be a PN sequence, a ZC sequence, etc., which is not limited to the type of sequence here;

[0309] ■When the gDRS is RS dedicated for beam management, i.e. UE determines the RS available for beam management by receiving the configuration information of RS dedicated for beam management from network device, the specific operation method includes one or more combinations of the following:

[0310] ◆In an implementation manner, the configuration information of RS dedicated for beam management includes one or more combinations of the following:

[0311] The reference frequency information of the RS dedicated for beam management, such as the third type of GSCN, is used to determine the frequency domain position or RS pattern corresponding to the RS burst dedicated for beam management;

[0312] The pattern of the RS dedicated for beam management can be similar to the aforementioned SSB pattern to be received, for example:

[0313] -N RS signals are transmitted on the same time unit and N frequency domain units, or X time units and Y frequency domain units, and the specific operation manner can refer to the description of the second type of SSB pattern, which will not be described here;

[0314] -Among them, the N RS signals or the generation sequence of Y RS signals transmitted on the same time unit can be the same or use different sequences (the advantage is that different sequences can utilize their orthogonality to reduce the interference between adjacent beams);

[0315] The resource configuration of the RS dedicated for beam management includes one or more of the following:

[0316] -Time reference point, which can be used to determine the time domain starting position of the RS or RS pattern, the time reference point can be an absolute time reference point such as SFN 0 or a specified time, or a time reference point related to a signal, such as the first or last time unit of receiving the PBCH and / or PDCCH and / or PDSCH carrying the resource configuration of the RS dedicated for beam management, or the first or last time unit of the PDCCH scheduling the PDSCH carrying the resource configuration of the RS dedicated for beam management;

[0317] -Time unit interval value, which can represent the time offset from the time reference point and can be used to determine the time domain starting position of the RS or RS pattern according to the time reference point;

[0318] - reference frequency information of the RS dedicated for beam management, such as a frequency domain reference point or a third type of GSCN, which can be used to determine the frequency domain starting position or the location of the center frequency point of the RS or RS pattern, including determining the frequency domain starting position according to the frequency domain unit offset or gap from the frequency domain reference point, which can be an absolute frequency domain reference point such as a specified point A (with an absolute frequency value indication) or a specified frequency point (the frequency domain starting point of a bandwidth, BWP, carrier, etc.), or a frequency domain reference point related to a signal, such as the first or last frequency domain unit of the received PBCH and / or PDCCH and / or PDSCH carrying the resource configuration of the RS dedicated for beam management, or the first or last frequency domain unit of the PDCCH scheduling the PDSCH carrying the resource configuration of the RS dedicated for beam management;

[0319] - a second frequency domain unit offset, indicating the frequency domain unit offset or gap of the RS or RS pattern from the frequency domain reference point;

[0320] - a third frequency domain unit offset, indicating the frequency domain offset from the frequency domain position corresponding to the third type of GSCN or the detected first type of SSB;

[0321] - the time domain period of the RS or RS pattern;

[0322] In an implementation manner, the RS dedicated for beam management can be associated with the first type of SSB, and the UE can use the association relationship to determine the RS or RS burst dedicated for beam management, wherein the RS pattern is similar to the second type of SSB pattern described above, including at least one of the number of time domain units occupied by all RSs in the pattern, the number of frequency domain units, the total number of RSs, and the frequency domain interval between adjacent frequency domain RSs, which will not be described here; Specifically, the association relationship can be a combination including one or more of the following:

[0323] The transmission of the first type of SSB is associated with whether the RS dedicated for beam management is configured;

[0324] The frequency domain position of the first type of SSB is associated with the frequency domain position of the RS dedicated for beam management;

[0325] The time domain position of the first type of SSB is associated with the time domain position of the RS dedicated for beam management;

[0326] ◆In an implementation, the example manner that the first type of SSB and the RS associated with the configuration for beam management exclusive are associated can be that, when the UE detects the first type of SSB on the third type of GSCN, the UE can consider that the system is configured or can be configured with the RS burst for beam management exclusive; the third type of GSCN can be preset in the protocol or obtained through the configuration information of the RS for beam management exclusive, and the advantage is that the UE can determine whether the RS burst for beam management exclusive is configured by detecting the SSB corresponding to the third type of GSCN. For example, if the UE detects the first type of SSB on the third type of GSCN, the UE can consider that the RS burst for beam management exclusive is configured.

[0327] ◆Optionally, the third type of GSCN described above is used as a reference frequency point for detecting the first type of SSB, and the reference frequency point can also be obtained according to the reference frequency information of the RS for beam management exclusive included in the configuration information of the RS for beam management exclusive.

[0328] ◆In an implementation, the example manner that the transmission of the first type of SSB and whether the RS for beam management exclusive is configured are associated can be that, when the UE detects the first type of SSB on the third type of GSCN, the UE can consider that the system is configured or can be configured with the RS burst for beam management exclusive; the third type of GSCN can be preset in the protocol or obtained through the configuration information of the RS for beam management exclusive, and the advantage is that the UE can determine whether the RS burst for beam management exclusive is configured by detecting the SSB corresponding to the third type of GSCN. For example, if the UE detects the first type of SSB on the third type of GSCN, the UE can consider that the RS burst for beam management exclusive is configured.

[0329] ◆In an implementation, the example manner that the frequency domain position of the first type of SSB and the frequency domain position of the RS for beam management exclusive are associated can be that, the frequency domain position of the RS for beam management exclusive is determined based on the third type of GSCN or the frequency domain position corresponding to the detected first type of SSB and the third frequency domain unit offset, for example, the frequency position corresponding to the third type of GSCN or the position of the center frequency point of the detected first type of SSB is used as a reference frequency position, and the third frequency domain unit offset is the offset of the frequency domain position of the RS for beam management exclusive relative to the reference frequency position.

[0330] ◆In an implementation, the frequency domain starting position or the position of the center frequency point corresponding to the RS burst for beam management exclusive can also be determined based on the frequency domain reference point obtained through the configuration information of the RS for beam management exclusive and the second frequency domain unit offset.

[0331] In an implementation, the time-domain starting position of the RS burst dedicated for beam management can also be determined based on a time reference point and a time unit interval value obtained by receiving the configuration information of the RS dedicated for beam management.

[0332] In an implementation, the time-domain position of the first type of SSB and the time-domain position of the RS dedicated for beam management can be determined according to a time reference point related to the first type of SSB and a time-domain offset relative to the time reference point. The time reference point can be the first or last time unit of the detected first type of SSB, or the first or last time unit of the time slot in which the detected first type of SSB is located. The time-domain offset can be a time unit interval value obtained by receiving the configuration information of the RS dedicated for beam management, or a preset offset in the protocol, such as one or more time-domain units.

[0333] In an embodiment, the RS pattern dedicated for beam management can be determined in one or more of the following ways:

[0334] The RS pattern corresponding to the third type of GSCN can be preset in the protocol or configured by RRC high-layer signaling. The third type of GSCN can correspond to one or more GSCNs.

[0335] Optionally, the first type of GSCN includes the third type of GSCN. For example, the third type of GSCN can be selected from a part of the values of the first type of GSCN. In this way, the implementation can be simple, the signaling overhead can be smaller, the changes to the protocol can be smaller, the detection complexity of the UE can be reduced, and the performance of random access can be enhanced.

[0336] The configuration information of the RS pattern dedicated for beam management obtained by receiving the configuration information of the RS dedicated for beam management.

[0337] In an implementation, the UE obtains the configuration information of the RS dedicated for beam management in at least one of the following ways:

[0338] The UE receives PBCH and / or SIB1 PDCCH and / or SIB1 PDSCH to obtain the configuration information of the RS dedicated for beam management. For example, the configuration information of the RS dedicated for beam management at this time is the RS dedicated for beam management shared by the UE; and / or

[0339] receiving MSG2 PDCCH to obtain the configuration information of RS dedicated for beam management, for example, the configuration information of RS dedicated for beam management at this time is common RS dedicated for beam management shared by one UE group (i.e. one or more UEs); and / or

[0340] receiving MSG2 PDSCH (in particular, RAR in the PDSCH) to obtain the configuration information of RS dedicated for beam management, for example, the configuration information of RS dedicated for beam management at this time is UE-specific RS dedicated for beam management;

[0341] ■UE performs gDRS reception procedure, which can include one or more of the following:

[0342] ◆UE receives configuration information related to gDRS reception, which can include one or more of the following:

[0343] the configuration related to the pattern of gDRS, including the number of time domain units X and / or the number of frequency domain units Y corresponding to a signal, or the total number of signals N, and can also include the time domain unit interval value between time domain units corresponding to a signal or the frequency domain unit interval value between frequency domain units;

[0344] the number information of gDRS in the frequency domain, used to determine the number of frequency division multiplexed gDRS transmitted in a unit time unit;

[0345] the time reference point and / or the time unit interval value, which can be used to determine the time domain starting position of the gDRS, including the time domain starting position determined according to the time unit interval value of a time reference point, which can be an absolute time reference point such as SFN 0 or a specified time, or a time reference point related to a signal, for example, when the gDRS is SSB, the first or last time unit of the first type of SSB;

[0346] the period of the gDRS;

[0347] a frequency domain reference point and / or a frequency domain unit offset, which can be used to determine the frequency domain starting position of the gDRS, including the frequency domain starting position determined according to a frequency domain unit offset or interval with respect to a frequency domain reference point, which can be an absolute frequency domain reference point, such as a specified point A or GSCN or ARFCN (with an absolute frequency value indication); and / or, a specified frequency point (a frequency domain starting point of a bandwidth, BWP, carrier, SSB, etc.); and / or, a frequency reference point of a related signal, such as a frequency location (e.g., a location of a center frequency point) of a reference signal used to activate the UE to receive an SSB or to wake up the UE; and / or, a frequency domain reference point of a related signal, such as a first or last frequency domain unit of a PBCH and / or PDCCH and / or PDSCH carrying a resource configuration of the beam management dedicated RS, or a first or last frequency domain unit of a PDCCH scheduling a PDSCH carrying a resource configuration of the beam management dedicated RS;

[0348] a frequency offset or interval, which is used to indicate a frequency offset of the frequency domain starting position of the gDRS and the frequency domain reference point, and the frequency offset can be one or more frequency domain units or GSCN or ARFCN;

[0349] a subcarrier spacing of the gDRS;

[0350] an indication of whether the gDRS supports frequency division multiplexing, which is used to indicate whether the base station has enabled a mode of transmitting the gDRS by frequency division multiplexing, and accordingly, the UE determines the bandwidth of the received signal according to the frequency domain resource occupied by the gDRS by frequency division multiplexing when determining to receive the gDRS, and the determination manner is as described above and will not be repeated here;

[0351] configuration information of a measurement window, including a time domain starting point of the measurement window, a time unit length in time domain, and a time domain period size;

[0352] a type of measurement feedback value, including one or more combinations of the following

[0353] an index of the gDRS or an index of a frequency domain unit corresponding to the gDRS;

[0354] a power measurement value of the gDRS, such as a measurement value of a reference signal in an SSB (e.g., represented as an SS-RSRP value);

[0355] The resource configuration information reported by the measurement feedback includes at least one of the following: a reporting resource period, a starting position of a frequency domain resource and a number of physical resource blocks occupied, a starting position of a time domain resource and a number of time domain symbols occupied;

[0356] In an implementation manner, the UE determines whether to receive the gDRS, such as the second type of SSB or the RS dedicated for beam management, according to certain trigger conditions, including a combination of one or more of the following:

[0357] The UE receives an indication of whether the base station enables the gDRS transmission, for example, in an implementation manner, the UE receiving an indication of whether the base station enables the second type of SSB (or the second type of SSB burst) transmission can include at least one of the following:

[0358] - Explicit indication, such as 1-bit notification;

[0359] The UE can acquire through PBCH and / or SIB1 PDCCH and / or SIB1 PDSCH;

[0360] - Implicit indication, if the gDRS corresponding gURS resource (such as PRACH resource or PUSCH or PUCCH resource for reporting the measurement quantity corresponding to the gDRS) is configured, it is enabled, and if the gDRS corresponding gURS resource is not configured, it is not enabled;

[0361] In an implementation manner, when the gDRS is SSB, the condition for the UE to determine whether to receive the gDRS can also be determined based on a frequency offset (such as Kssb) for indicating the offset between the SSB and the resource grid, wherein the resource blocks included in the resource grid are determined based on a common subcarrier spacing, for example, when the offset is greater than or not less than or equal to O1, or the offset is less than or not greater than or equal to O2, or the offset is greater than or greater than or equal to O1 and less than or less than or equal to O2, the base station enables the transmission of the second type of SSB; otherwise, it is not enabled, wherein O1 is not equal to O2, O1 and O2 are protocol preset offset threshold values, and O1 and O2 are integers;

[0362] In an implementation manner, when the gDRS is SSB, the UE can determine whether the received SSB is the first type of SSB or the second type of SSB by at least one of the following:

[0363] If the detected SSB includes the configuration information related to the second type of SSB, the detected SSB is the second type of SSB, otherwise it is the first type of SSB; in other words, according to whether the detected SSB includes the configuration information related to the second type of SSB, it can be determined whether the detected SSB is the second type of SSB;

[0364] According to the information included in the detected first type SSB, for example, the first type SSB can include the second type SSB related configuration information, the second type SSB related configuration information is obtained according to the detected first type SSB, and the second type SSB is received based on the second type SSB related configuration information; in other words, the second type SSB related configuration information is included in the first type SSB, the second type SSB related configuration information is obtained by receiving the first type SSB, and the UE can determine whether the subsequently received SSB is the second type SSB according to the second type SSB related configuration information;

[0365] In an implementation manner, when the gDRS is SSB, the UE determines whether the base station enables the second type SSB transmission according to the detected SSB, and the manner includes one or more combinations of the following:

[0366] It is determined whether the base station enables the second type SSB based on the indication of the second type SSB (burst) obtained by receiving the second type SSB related configuration information, for example, when the UE receives the first type SSB, the indication of the second type SSB (burst) included in the second type SSB related configuration information is obtained through the PBCH, for example, 1 represents that the base station enables the second type SSB, and 0 represents that the base station enables the second type SSB; on the contrary, 0 represents that the base station enables the second type SSB, and 1 represents that the base station enables the second type SSB; or the UE receives the SSB including the second type SSB related configuration information, and then the UE can determine that the base station enables the second type SSB;

[0367] It is determined whether the detected SSB is the first type SSB or the second type SSB based on the SSB type related information obtained by receiving the second type SSB related configuration information.

[0368] When the UE receives the second type SSB related configuration information, the UE considers that the base station enables the second type SSB transmission;

[0369] In an implementation manner, when at least one of the following conditions is met, the UE satisfies the state condition of receiving the gDRS burst, otherwise the UE does not satisfy;

[0370] The UE capability (UE capability) supports receiving the gDRS burst (a plurality of frequency division multiplexed gDRSs transmitted on a single time unit), wherein the gDRS burst refers to the second type SSB burst and / or the RS burst dedicated for beam management; and / or

[0371] The UE capability supports receiving the frequency reference point (e.g., the first type of GSCN and / or the second type of GSCN and / or the third type of GSCN) described above; and / or

[0372] The minimum channel bandwidth supported by the UE is greater than or not less than the channel bandwidth occupied by the gDRS burst; and / or

[0373] The minimum channel bandwidth supported by the UE is greater than or not less than the channel bandwidth occupied by at least two frequency division multiplexed gDRSs (belonging to the gDRS burst); and / or

[0374] The maximum number of frequency division multiplexed gDRSs supported by the UE is greater than or not less than two; and / or

[0375] The maximum channel bandwidth supported by the UE is greater than or not less than the channel bandwidth occupied by the frequency division multiplexed gDRS; and / or

[0376] In an implementation, when the UE receives an indication that the base station enables the gDRS burst and / or the UE meets the state condition for receiving the gDRS burst, the UE enables the reception of the gDRS burst;

[0377] It should be noted that in the present application, the GSCN used to determine the first type of SSB pattern is referred to as the first type of GSCN, and the GSCN used to determine the second type of SSB pattern is referred to as the second type of GSCN.

[0378] In an implementation, the first type of GSCN can include the second type of GSCN, i.e., the second type of GSCN can correspond to the first type of SSB or the second type of SSB. For example, the first type of GSCN ranges from N1 to N2, and the second type of GSCN can be one or more GSCN values in this range. The multiple GSCN values can be continuous, such as N1, N1+1, N1+2, …, or discontinuous, such as N1, N1+3, N1+5, etc. The advantage of this is that the base station can more flexibly configure the frequency domain position of the first type of SSB, and the UE that does not support the second type of SSB can also detect the first type of SSB on the second type of GSCN, reducing the detection complexity of the UE and enhancing the performance of random access.

[0379] The UE receives the gDRS burst, such as the second type of SSB burst. In the following, the second type of SSB burst will be taken as an example to describe the gDRS burst received by the UE. The related method for the UE to receive the RS burst dedicated for beam management can be similarly obtained, and will not be described hereinafter. The method for determining the frequency position of the second type of SSB includes one or a combination of the following:

[0380] In one implementation, the frequency position of the second type of SSB can be determined based on a first frequency position, which is used to determine the frequency position of a reference SSB (or anchor SSB). In the second type of SSB burst, among the frequency-division multiplexed SSBs corresponding to a time-domain unit, at least one SSB (or reference SSB) has its frequency position at the first frequency position. The UE receives the second type of SSB burst based on the first frequency position, wherein the first frequency position can be the frequency position of the reference SSB in the second type of SSB burst. The UE can obtain the first frequency position by receiving configuration information related to the second type of SSB, and the UE receives the second type of SSB burst based on the first frequency position, wherein the first frequency position can be the frequency position of the reference SSB in the second type of SSB burst, and the second type of SSB pattern can be related to the first frequency position.

[0381] - Optionally, the first frequency location may be a frequency location determined based on the Global Synchronization Channel Number (GSCN) or the Absolute Radio Frequency Channel Number (ARFCN), wherein the GSCN or ARFCN can be used to determine the frequency location of the SSB (e.g., the reference frequency location of the SSB, or denoted as SS). REF Specifically, the mapping relationship between the synchronization grid and the corresponding resource elements of the SSB can be that the synchronization grid is mapped to the position of the SSB center frequency. For example, if the SSB occupies 20 physical resource blocks (PRBs) in the frequency domain, and the corresponding resource element index (RE index) or subcarrier index is 0 to 239, then the position of the SSB center frequency is RE index 120, meaning that the reference frequency on the synchronization grid corresponds to the center of the first subcarrier on the 11th PRB in the SSB. Optionally, the rule applies to both uplink and downlink.

[0382] √ As a possible implementation, GSCN can be used to determine the frequency position of the reference SSB in a frequency domain SSB burst. For example, if the frequency position of the reference SSB in a frequency domain SSB burst is within a fixed frequency range, such as 3000MHz to 24250MHz, and the GSCN corresponding to the frequency position of the reference SSB is 7500, then based on this GSCN, an R value can be determined, for example, GSCN = 7499 + R, where the R value is an integer greater than or equal to 0 (R is greater than or equal to zero and less than or equal to Rmax, where the value of Rmax is related to the aforementioned fixed frequency range). In the example of GSCN = 7500, the value of R is 1. Then the UE can use the formula: Frequency position of the reference SSB in a frequency domain SSB burst (SS REF = 3000MHz + R * 1.44MHz, to determine the frequency position of the reference SSB in the frequency domain SSB burst (SS). REF )=3000MHz+1*1.44MHz=3001.44MHz.

[0383] In one implementation method, the first frequency position can be determined by a combination of one or more of the following methods:

[0384] -The first frequency position preset by the protocol;

[0385] The UE obtains a first frequency position based on the configuration information related to the second type of SSB received. For example, the configuration information related to the second type of SSB may include information about the first frequency position. In one implementation, the first frequency position obtained based on the configuration information related to the second type of SSB may be different from the first frequency position preset by the protocol. That is, the UE can be configured with a new first frequency position to determine the frequency position of the reference SSB. In this way, when the UE does not support the first frequency position preset by the protocol, a first frequency position supported by the UE that is different from the protocol preset can be obtained through the configuration information. Alternatively, the first frequency position obtained based on the configuration information related to the second type of SSB can replace the first frequency position preset by the protocol. In other words, the first frequency position is configured through the configuration information related to the second type of SSB without being preset by the protocol. Alternatively, the reference SSB of the first type of SSB can be preset by the protocol. Frequency-related information (e.g., first type GSCN) and the frequency location information corresponding to the reference SSB of the second type SSB (e.g., the first frequency location mentioned above, or the second type GSCN) can be configured through the configuration information related to the second type SSB; or the reference frequency-related information of the first type SSB (e.g., first type GSCN) and the frequency location information corresponding to the reference SSB of the second type SSB (e.g., the first frequency location mentioned above, or the second type GSCN) can be preset by the protocol, and the frequency location information corresponding to the reference SSB of the second type SSB that is different from the preset value of the protocol can also be configured through the configuration information related to the second type SSB (e.g., the first frequency location mentioned above, or the second type GSCN);

[0386] - The UE determines the first frequency position based on the specified frequency reference point and frequency offset. This method allows for more flexible positioning of the reference SSB, facilitating base station configuration and UE implementation.

[0387] √ The frequency reference point can be a specified point A, GSCN, or ARFCN (with an absolute frequency value indication); and / or, a specified frequency point (bandwidth, BWP, carrier, SSB, etc., frequency domain start point, end point, intermediate point, or other position); and / or, a frequency position of a signal as a frequency reference point, such as the frequency position of a reference signal used to activate the UE to receive the SSB or wake up the UE (e.g., the position of the center frequency point, the position of the start or end frequency point, or other positions).

[0388] √ The frequency offset can be one or more frequency domain elements, GSCN, or ARFCN. The offset can be pre-configured or obtained by receiving system information or configuration information.

[0389] In one implementation method, the method by which the UE determines the second type SSB pattern may include one or more of the following:

[0390] - The information related to the SSB pattern or format or configuration parameters obtained by receiving the SSB-related configuration information and / or the configuration parameter information of the downlink reference signal in the second type of SSB burst can be used to determine the second type of SSB pattern;

[0391] - The second type of SSB pattern is determined based on the subcarrier spacing and / or operating band of the SSB. Different operating bands can correspond to one or more SSB subcarrier spacings and / or different GSCN value ranges. For example, a certain operating band can correspond to a certain GSCN value range, which can correspond to the corresponding second type of SSB pattern. Furthermore, the GSCN value range corresponding to the operating band can also correspond to multiple subcarrier spacings, and different subcarrier spacings within this GSCN value range can correspond to different second type of SSB patterns. For example, the UE can determine the value range of the second type of GSCN in the operating band (which can correspond to one or more GSCNs), and obtain the corresponding second type of SSB pattern based on the determined value range of the second type of GSCN. If one or more GSCNs within the determined value range of the second type of GSCN correspond to multiple subcarrier spacings, the corresponding second type of SSB pattern can be obtained based on the subcarrier spacing supported by the UE. The value range of the second type of GSCN can be preset in the protocol for the operating frequency band, or it can be configured through RRC higher-layer signaling; the SSB pattern corresponding to the second type of GSCN can be preset in the protocol or configured through RRC higher-layer signaling; the second type of SSB pattern corresponding to different subcarrier intervals can be preset in the protocol or configured through RRC higher-layer signaling.

[0392] √ For example, within the range of values ​​for the second type of GSCN, there are multiple different subcarrier intervals preset by the protocol. These different subcarrier intervals correspond to different second type of SSB patterns. For example, within the range of values ​​for a second type of GSCN, there are two subcarrier intervals, such as 15kHz and 30kHz. The 15kHz subcarrier interval can correspond to second type of SSB pattern 1, and the 30kHz subcarrier interval can correspond to second type of SSB pattern 2. For example, pattern 1 and pattern 2 can correspond to different numbers of time domain units. The advantage of this is that different subcarrier intervals can correspond to different durations of SSB bursts. The UE can select the appropriate second type of SSB burst for detection based on the subcarrier interval it supports. For example, if the UE supports a larger subcarrier interval, the UE can select the SSB burst corresponding to that subcarrier interval, reducing the latency of receiving the second type of SSB burst.

[0393] √ Optionally, the UE may consider that a Type II SSB burst is transmitted on a frequency corresponding to one or more Type II GSCN values ​​within the Type II GSCN value range. The Type II SSB pattern can be determined based on the Type II GSCN value range. Optionally, multiple Type II GSCN value ranges can exist within the same operating frequency band. Different value ranges can correspond to different Type II SSB patterns. For example, there are two value ranges: range N1 to N2, corresponding to Type II SSB pattern 1, and range N3 to N4, corresponding to Type II SSB pattern 2. The advantage of this is that multiple different Type II SSB patterns can be configured within the same operating frequency band. The SSB pattern improves the flexibility of system configuration. The UE can select to detect the second type SSB burst within the corresponding range of the second type GSCN based on its own capabilities, such as the maximum bandwidth it supports. For example, the frequency division multiplexing SSB in the second type SSB pattern 2 transmitted in the range of the second type GSCN N3 to N4 occupies a larger bandwidth, while the frequency division multiplexing SSB in the second type SSB pattern 1 transmitted in the range of the second type GSCN N1 to N2 occupies a smaller bandwidth. If the UE can support a large bandwidth, the UE can choose to detect the second type SSB burst within the range of the second type GSCN N3 to N4. This can help the UE quickly obtain the measurement results of multiple SSBs and reduce the measurement latency of the UE.

[0394] √ Optionally, the first type of GSCN includes the second type of GSCN. For example, the second type of GSCN can select a subset of the multiple values ​​of the first type of GSCN. In this way, the implementation is simple, the signaling overhead is smaller, the changes to the protocol are smaller, the detection complexity of the UE is reduced, and the performance of random access is enhanced.

[0395] ◆In one implementation, the UE receives a signal containing a second type of SSB, which corresponds to one or more SSBs in the second SSB pattern described above.

[0396] When gDRS is an SSB, the UE can determine the frequency domain resources occupied by multiple SSBs in the frequency domain in one or more of the following ways:

[0397] - Determined based on the number (Y) of frequency division multiplexing SSBs in a time unit, for example, the frequency domain resources B occupied by multiple frequency division multiplexing SSBs. total =Y×B SSB B SSB Frequency domain resources for a single SSB (frequency domain units occupied by the SSB in the frequency domain, for example, 20 PRBs);

[0398] - Determined based on the number (Y) of frequency-division multiplexed SSBs and the frequency spacing G between the frequency domain units occupied by the SSBs in a time unit, for example, the frequency domain resources B occupied by multiple frequency-division multiplexed SSBs. total =Y×B SSB +G×(Y-1), where B SSB The frequency domain resources of a single SSB (the frequency domain units occupied by the SSB in the frequency domain, for example, 20 PRBs); wherein, the frequency domain spacing G can be configured as 0 or M frequency domain units (1 frequency domain unit, for example, 1 PRB), wherein the advantage of configuring the spacing is that it can reduce interference between adjacent beams and improve the signal quality on the beam.

[0399] ◆The UE receives the measurement gDRS and obtains the measurement feedback value, including one or more of the following:

[0400] In one implementation, the UE receives measurements of the gDRS over X time units and Y frequency units where the gDRS may exist.

[0401] In one implementation, the measurement feedback value includes a combination of one or more of the following:

[0402] - The index of gDRS exceeding the power threshold or the index of its corresponding frequency domain cell; and / or

[0403] - The index of the gDRS corresponding to the maximum power measurement value or the index of its corresponding frequency domain cell;

[0404] - The power measurement value corresponding to the gDRS that exceeds the power threshold, such as the measurement value of the reference signal in the SSB (e.g., represented as the SS-RSRP value);

[0405] - The index of the gDRS corresponding to the largest multiple power measurements or the index of the corresponding frequency domain unit; this method is beneficial for beam management;

[0406] - The index of the gDRS corresponding to multiple power measurements exceeding the power threshold, or the index of the frequency domain cell corresponding to them; this method is beneficial for beam management;

[0407] - The power thresholds mentioned above can be obtained through PBCH and / or SIB1 PDCCH and / or SIB1 PDSCH;

[0408] ● The UE transmits the uplink signal according to the received gDRS, including one or more of the following operations:

[0409] ■ The UE obtains configuration information related to the SIB1 PDCCH and / or initial uplink / downlink frequency domain resources (e.g., BWP). Optionally, the configuration information can be obtained according to the SSB.

[0410] ◆In one implementation, the configuration information includes one or more of the following:

[0411] SIB1 PDCCH related configuration information is used to determine or indicate one or more of the following

[0412] Combination of items:

[0413] -Reuse mode;

[0414] - The number of (contiguous) frequency domain units occupied;

[0415] - The number of (continuous) time domain units occupied;

[0416] - A frequency resource offset relative to the SSB (which may be one or more frequency domain units), which may be a frequency offset relative to the lowest resource block (or the first resource block of the SSB) of the detected SSB; and / or, the lowest resource block (or the first resource block of the SSB) corresponding to the lowest frequency unit (e.g., the lowest indexed resource block) in the second type of frequency domain burst; and / or, the highest resource block (or the last resource block of the SSB) corresponding to the highest frequency unit (e.g., the highest indexed resource block) in the second type of frequency domain burst; and / or, relative to the frequency of the reference SSB in the second type of frequency domain burst (the first frequency position mentioned above) or the lowest, highest, or intermediate resource block of the reference SSB, wherein the intermediate resource block refers to the resource block with an index of N / 2 or N / 2-1, where N is the number of resource blocks occupied by the SSB. The advantage of doing so is that the number of bits required to indicate the frequency offset can be reduced.

[0417] SIB1 PDCCH monitoring timing related configuration information, which is used to determine or indicate one or more of the following combinations: time domain offset relative to the start position of the system frame (which may be one or more time units), number of search space sets in each frequency domain unit, and start symbol of the time unit containing the search space set; Configuration information related to initial downlink and / or uplink frequency domain resources (e.g., BWP) and / or minimum channel, including configuration information related to frequency domain resources, including bandwidth size; and / or, frequency domain start point and the number of resource blocks occupied;

[0418] - Preferably, the initial downlink BWP can be used by the UE to listen to the SIB1 PDCCH, and the SIB1 PDCCH is used to schedule the SIB1 PDSCH; optionally, the frequency domain resources occupied by the SIB1 PDCCH are less than or equal to or not greater than the frequency domain resources of the initial downlink BWP (in other words, the frequency domain resources occupied by the SIB1 PDCCH are included in or equal to the initial downlink BWP); optionally, the initial downlink BWP can also be used by the UE to receive msg2 (RAR) and / or msg4.

[0419] - Preferably, the initial uplink BWP can be used by the UE to send a preamble for random access (e.g., sent on PRACH) and / or msg3;

[0420] - In one implementation, the minimum channel-related configuration information can be determined by a combination of one or more of the following methods:

[0421] √ Explicit indication, for example, through 2-bit notification, '00' represents 10MHz, '01' represents 20MHz, '10' represents 50MHz, and '11' represents 100MHz. More bits can be used to indicate a larger bandwidth size; it is not limited to using only 2 bits. Preferably, the explicit indication can indicate different bandwidth sizes according to different frequency band ranges. For example, in FR2, 2 bits can indicate '00' represents 50MHz, '01' represents 100MHz, '10' represents 200MHz, and '11' represents 400MHz.

[0422] ■The method by which the UE determines the configuration related to the initial downlink and / or uplink frequency domain resources (e.g., the frequency domain resources of the BWP) may also include a combination of one or more of the following:

[0423] ◆In one implementation, the resources of the initial downlink and / or uplink BWP are determined by the frequency domain resources occupied by the SSB detected in the frequency domain SSB burst; for example, if one SSB is detected in the frequency domain SSB burst, the frequency domain resources it occupies are used as the initial downlink and / or uplink BWP.

[0424] ◆In one implementation, the frequency offset is determined by the frequency domain resources occupied by the SSB detected in the frequency domain SSB burst and a third frequency offset, wherein the third frequency offset may be relative to: the lowest resource block of the SSB; and / or, relative to the highest resource block of the SSB; and / or, relative to the lowest, highest, or intermediate resource block of the reference SSB in the frequency domain SSB burst, wherein the intermediate resource block refers to the resource block with index N / 2 or N / 2-1, where N is the number of resource blocks occupied by the SSB;

[0425] ◆In one implementation, the resources of the initial downlink and / or uplink BWP are determined by the frequency domain resources occupied by the SSBs configured in the frequency domain SSB burst pattern; for example, the frequency domain resources occupied by the SSBs configured in the frequency domain SSB burst pattern are used as the initial downlink and / or uplink BWP; in an example implementation, the frequency domain SSB burst may include all SSBs included in the second type of SSB pattern;

[0426] ◆In one implementation, the position of the initial downlink and / or uplink BWP is determined by the frequency domain resources occupied by the SSB configured in the frequency domain SSB burst pattern and the frequency offset, such as the start position, center position, end position, etc. The frequency offset can be relative to: the lowest resource block of the SSB configured in the frequency domain SSB burst pattern; and / or, the highest resource block of the SSB configured in the frequency domain SSB burst pattern; and / or, the lowest, highest, or intermediate resource block of the reference SSB in the frequency domain SSB burst pattern, wherein the intermediate resource block refers to the resource block with index N / 2 or N / 2-1, where N is the number of resource blocks occupied by the SSB;

[0427] ◆In one implementation, the frequency domain resources of the initial downlink and / or uplink BWP may include the frequency domain resources occupied by Z frequency-adjacent SSBs among Y frequency-division multiplexed SSBs in the SSB burst pattern, where Z is less than or equal to or not greater than Y; for example, Z consecutive SSBs, including the reference SSB, can be selected as the center among the Y frequency-division multiplexed SSBs, and the frequency domain resources occupied by these Z consecutive SSBs can be used as the frequency domain resources of the initial downlink and / or uplink BWP; and / or, the frequency domain resources of the initial downlink and / or uplink BWP can be determined based on the index of the starting SSB and the number of SSBs (e.g., configured number information). For example, if the SSB index is 0 and the number of SSBs is 3, then the frequency domain resources of the initial downlink and / or uplink BWP correspond to the frequency domain resources occupied by the SSBs with SSB indices 0, 1, and 2; wherein, Z, the index of the starting SSB, and the number of SSBs can be determined by the UE according to the above and SIB1. The configuration information is obtained from PDCCH and / or the initial uplink / downlink BWP.

[0428] It is worth noting that configuring the initial downlink / uplink BWP bandwidth to be less than the frequency domain resources occupied by Y frequency division multiplexing SSBs has the advantage of helping to reduce the complexity of UE blind detection DCI.

[0429] The initial uplink / downlink frequency domain resources determined by the UE can be used for initial access or for other communications between the UE and the base station, such as data communication. Determining the initial uplink / downlink frequency domain resources in this way allows the UE to directly use these resources to communicate with network equipment.

[0430] ◆In one implementation, among the Y frequency division multiplexing SSBs, each SSB (e.g., SSB index is y, where y = 0, 1, 2, ..., Y-1) can correspond to an initial uplink and / or downlink BWP (e.g., the index of the frequency domain unit occupied by the initial uplink and / or downlink BWP corresponding to the SSB index y is y).

[0431] The frequency domain resources occupied by the initial downlink and / or uplink BWP can be completely overlapping and / or partially overlapping and / or not overlapping with the frequency domain resources of the corresponding frequency domain SSB, but the frequency domain spacing does not exceed one frequency domain unit or multiple predetermined frequency domain units and / or not overlapping but the frequency domain spacing is zero.

[0432] ◆ Preferably, the bandwidth of the initial downlink and / or uplink BWP is less than or equal to or not greater than the maximum channel bandwidth supported by the UE;

[0433] ■ In one implementation, the Y frequency division multiplexing SSBs may also correspond to less than or equal to or no more than Y carriers, wherein each carrier may include at least one frequency division multiplexing SSB, and the initial downlink / uplink BWP corresponding to each carrier may be determined based on the frequency domain resources of the frequency division multiplexing SSB and / or the configuration information related to the initial downlink and / or uplink BWP and / or minimum channel bandwidth mentioned above.

[0434] ■ In one implementation, the frequency domain SSB is associated with the initial downlink and / or uplink BWP, and the association may be a combination of one or more of the following:

[0435] ◆One-to-one association, such as a frequency domain SSB and an initial downlink and / or uplink BWP, for example, a one-to-one association is made through the index of the frequency domain SSB and the index of the initial downlink and / or uplink BWP, such as an SSB with index 0 being associated with a BWP with index 0; and / or,

[0436] ◆ Many-to-one association, that is, multiple frequency domain SSBs are associated with an initial downlink and / or uplink BWP. For example, many-to-one association is performed through the index of the SSB and the index of the initial downlink and / or uplink BWP. For example, the SSB with index 0, 1, 2, 3 is associated with the BWP with index 0.

[0437] The advantage of the above association is that when a UE performs initial access through an SSB in a frequency domain SSB burst, it can quickly determine the appropriate initial uplink and / or downlink BWP on different frequency domain resources based on its corresponding SSB index. This helps reduce conflicts during resource allocation and / or random access, and improves resource utilization and the efficiency of base station resource scheduling. For example, the UE can send a preamble for random access based on the selected SSB and the initial uplink BWP associated with that SSB; or, the UE can also listen to the PDCCH of RAR or msg4 based on the selected SSB and the initial downlink BWP associated with that SSB, and / or receive the PDSCH of RAR and msg4.

[0438] ◆In one implementation, when the SSB and the downlink and / or uplink BWP are many-to-one associated, the frequency domain resources occupied by the downlink and / or uplink BWP may include the frequency domain resources occupied by the multiple associated SSBs.

[0439] ■ In one implementation, the second type SSB and the initial downlink and / or uplink BWP are associated in the time domain.

[0440] ◆In one implementation, the time-domain position of the downlink and / or uplink initial BWP can be determined based on the time-domain position and time-domain offset of its associated SSB. The time-domain offset can be a protocol-preset time-domain offset, such as a single or multiple time-domain units; or it can be obtained based on the configuration information related to the SIB1 PDCCH and / or the initial downlink / uplink BWP; or…

[0441] ◆In one implementation, the time-domain position of the initial downlink and / or uplink BWP can also be the same as the time-domain position of its associated SSB, for example, being in the same time-domain position within a specific time period. For example, the second type of SSB pattern is X=2, Y=4, N=X multiplied by Y=8. Time unit 1 corresponds to Y=4 frequency-division multiplexed SSBs, with SSB indices from lowest to highest in the frequency domain as 0, 1, 2, 3; time unit 2 corresponds to Y=4 frequency-division multiplexed SSBs, with SSB indices from lowest to highest in the frequency domain as 4, 5, 6, 7; then the time-domain position of the initial downlink and / or uplink BWP bound to SSBs 0, 1, 2, 3 corresponding to time unit 1 can be determined based on time unit 1, for example, by the starting position being the same as the starting position of time unit 1 within a specific time period, or determined based on the starting position of time unit 2 and the aforementioned time offset; similarly, the SSBs corresponding to time unit 2... The time domain position of the initial downlink and / or uplink BWP bound by 4, 5, 6, and 7 can be determined based on time unit 2, for example, by the starting position and the starting position of time unit 2 being the same in the time domain within a specific time period, or by the starting position of time unit 2 and the aforementioned time offset.

[0442] ■ In one implementation method, the UE determines whether there is a PDCCH resource configuration (e.g., CORESET of Type 0 PDCCH CSS set) or whether the cell provides SIB1 based on the detected frequency division multiplexing SSB (e.g., based on MIB information in the SSB); optionally, it is determined based on the value of the SSB subcarrier offset included in the MIB.

[0443] ■The UE determines a second frequency reference point based on the received second type SSB. The second frequency reference point can be used to determine the common reference point of the resource block grid, and to determine the frequency domain starting point and / or bandwidth size of the carrier or BWP. The operation includes one or more of the following:

[0444] ◆In one implementation, the UE determines the position of the second frequency reference point based on the detected frequency position of the SSB. The SSB may be the SSB with the largest power measurement value (e.g., SS-RSRP) of the reference signal among the Y frequency division multiplexed SSBs in the same time unit; and / or may be any one of the SSBs whose power measurement value of the reference signal exceeds a power threshold among the Y frequency division multiplexed SSBs.

[0445] ◆In one implementation, the second frequency reference point can also be a designated point A or GSCN or ARFCN (with an absolute frequency value indication) or a designated frequency point (frequency domain start point of bandwidth, BWP, carrier, etc.), or a frequency domain reference point related to a signal, such as the first or last frequency domain unit of the PBCH and / or PDCCH and / or PDSCH carrying the resource configuration of the SSB, or the first or last frequency domain unit of the PDCCH that schedules the PDSCH carrying the resource configuration of the SSB.

[0446] ◆In one implementation, the UE determines downlink and / or uplink frequency domain resources (e.g., carrier, BWP, etc.) through a second frequency reference point and a second frequency offset: Optionally, the second frequency offset can be obtained through PBCH and / or SIB1 PDCCH and / or SIB1 PDSCH.

[0447] ◆In one implementation, the second frequency offset (in units of one or more frequency domain units) may be the frequency offset between the second frequency reference point and the lowest subcarrier of the lowest resource block (e.g., a common resource block (CRB)) (e.g., referred to as frequency offset 1 or Ncrb), the lowest resource block being a resource block that overlaps with the lowest resource block in the second type of SSB burst (or the resource block corresponding to the first resource block or the minimum resource block index of the second type of SSB burst). Figure 11 An example is given where the second type of SSB burst includes Y frequency-division multiplexed SSBs. The second frequency offset represents one or more frequency domain cell intervals between the second frequency reference point (e.g., the center frequency of the starting subcarrier (subcarrier 0) of CRB0 as the frequency reference point) and the lowest resource block, wherein the lowest resource block is the resource block that overlaps with the lowest resource block of the frequency domain SSB burst (or the resource block corresponding to the minimum resource block index) (in the example, the lowest resource block of SSB#0) (e.g., Figure 11 (CRB Ncrb in the text). Figure 11 The frequency domain SSB pattern (second type SSB pattern) in the text is only an example. Other SSB patterns mentioned above can also be used, which will not be elaborated here.

[0448] ◆In one implementation, the position of the second frequency reference point can be determined based on the frequency interval between the frequency corresponding to the detected SSB and the lowest frequency (unit) of the first mode corresponding to the SSB, and the frequency interval between the lowest frequency (unit) of the second burst and the second frequency reference point.

[0449] ◆In one implementation, the frequency interval between the frequency corresponding to the detected SSB and the lowest frequency (unit) of the second burst corresponding to the SSB can be determined by the index of the SSB and the second pattern to which the SSB belongs. For example, if the index of the detected SSB is y, its corresponding frequency can be determined as f according to the second pattern. ssb , where f ssb It can be determined based on the index of the reference SSB in the second burst (corresponding to the first frequency position) and the frequency offset of the detected SSB from the reference SSB in the second burst. This frequency offset can be determined based on the index offset of the detected SSB from the reference SSB in the second burst and the frequency domain spacing of adjacent SSBs.

[0450] ◆In one implementation, the frequency domain spacing between adjacent SSBs can be the number of frequency domain units (e.g., RBs) occupied by an SSB, or the frequency spacing between the center frequencies of adjacent SSBs.

[0451] ◆In one implementation, the lowest frequency (unit) of the second burst and the frequency interval Ncrb of the second frequency reference point can be determined according to the configuration of the RRC higher-layer signaling;

[0452] ◆As an example, the location f of the second frequency reference point ref =f ssb +12×(Ncrb-1)×SCS2+12×N SSB ×SCS SSB ×y, where SCS1 and SCS2 can be subcarrier spacings specified by the protocol (e.g., determined according to the SSB type or frequency band range) or determined by higher-layer parameters. SCS1 can be determined based on configured parameters, and SCS2 can be the subcarrier spacing of the CRB. SSB The subcarrier spacing of the SSB is y = 0, 1, 2, ..., Y-1, where y = 0, 1, 2, ..., Y-1 is the index or frequency domain cell index corresponding to the detected SSB, and 12 is the number of subcarriers occupied by a resource block. 12 is just an example and can be other values.

[0453] ◆In one implementation, the location of the second frequency reference point can be determined based on one or more of the following combinations: the index or frequency domain cell index corresponding to the detected SSB, the number of RBs occupied by the SSB, the subcarrier spacing of the SSB, and the frequency position f of the 0th subcarrier in the lowest resource block of the detected SSB#0. ssb Frequency offset 1 (i.e., the second frequency offset mentioned above) and frequency offset 2 (such as...) Figure 11As shown), frequency offset 2 (written as kssb) can be used to indicate the offset between subcarrier 0 of the lowest resource block of the frequency domain SSB burst and subcarrier 0 of the common resource block overlapping with the lowest resource block (or the frequency offset between the lowest resource block of the SSB and the entire resource block grid, in units of one or more frequency domain cells). Frequency offsets 1 and 2 can be obtained through PBCH and / or SIB1. For example, when the UE detects an SSB index corresponding to a time domain cell or its frequency domain cell index as y, where y = 0, 1, 2…, Y-1, the UE can determine the position of the second frequency reference point based on the frequency position of the detected SSB and the second frequency offset. For example, the position of the second frequency reference point can be determined based on frequency offset 1, frequency offset 2, the index of the detected SSB (or other parameters that can be used to determine the interval between the frequency position of the detected SSB and the lowest frequency position in the second type of SSB burst). Figure 11 As shown, the position f of the second frequency reference point ref =f ssb +SCS1×kssb+12×(Ncrb-1)×SCS2+12×N SSB ×SCS SSB ×y, where SCS1 and SCS2 can be subcarrier spacings specified by the protocol (e.g., determined according to the SSB type or frequency band range) or determined by higher-layer parameters. SCS1 can be determined based on configured parameters, and SCS2 can be the subcarrier spacing of the CRB. SSB The subcarrier spacing of the SSB is y = 0, 1, 2, ..., Y-1, where y = 0, 1, 2, ..., Y-1 is the index or frequency domain cell index corresponding to the detected SSB, and 12 is the number of subcarriers occupied by a resource block. 12 is just an example and can be other values.

[0454] Optionally, the location of the second frequency reference point, in addition to the parameters described above, can also be determined by considering the guard interval G between adjacent SSBs. The unit of the guard interval G can be one or more frequency domain cells. The location of the second frequency reference point f... ref =f ssb +SCS1×kssb+12×(Ncrb-1)×SCS2+12×(N SSB +G)×SCS SSB ×y;

[0455] ◆In one implementation, the second frequency offset can also be the offset between the second frequency reference point and the resource block corresponding to at least one frequency division multiplexing SSB, or the frequency offset between the second frequency reference point and the lowest subcarrier of one or more lowest resource blocks (e.g., common resource blocks (CRBs)). The resource block or lowest resource block corresponding to the SSB is a resource block that overlaps with the lowest resource block of the SSB corresponding to index y or frequency unit index y (or the resource block corresponding to the first resource block or the lowest resource block index of the SSB), where y = 0, 1, 2, ..., Y-1, corresponding to Y different frequency division multiplexing SSBs; different second frequency offsets can be used for different SSBs, for example, frequency offset 1 y , where y = 0, 1, 2, ..., Y-1 corresponds to Y different frequency division multiplexing SSBs. Figure 12 An example is given, where a second type of SSB burst includes Y frequency-division multiplexed SSBs. The second frequency offset corresponding to the Y frequency-division multiplexed SSBs can include multiple different values, such as Y different frequency offsets 1 (i.e., frequency offset 10, frequency offset 11, ..., frequency offset 1). Y-1 The second frequency offset can be obtained through PBCH and / or SIB1 PDCCH and / or SIB1 PDSCH. Figure 12 Frequency domain SSB pattern (Type II SSB pattern)

[0456] This is just one example; other SSB patterns mentioned above can also be used, which will not be elaborated here. The method for determining the frequency reference point based on the frequency offset can be found in the previous text, which will not be elaborated here.

[0457] ■ The UE obtains configuration information related to random access, including at least one or more of the following:

[0458] ◆ The configuration index for random access indicates one or more of the following combinations: random access preamble format, random access configuration period, number and position of random access frames in the random access configuration period, index of subframe or time slot in a random access frame, position of the start symbol of the random access preamble in a subframe or time slot, number of random access time slots in a random access subframe, number of ROs in a random access time slot, and number of OFDM symbols occupied in a RO.

[0459] ◆ The mapping ratio between Type II SSBs and ROs used for random access. This mapping ratio is used to determine the number of SSBs mapped to each RO. For example, when the mapping ratio is 1, it means that the RO and SSB are mapped (or associated) 1 to 1; when the mapping ratio is 1 / 4, 1 SSB can be mapped to 4 ROs; when the mapping ratio is 4, 4 SSBs are mapped to 1 RO.

[0460] In one implementation, the mapping ratio can be a mapping ratio for a single SSB. The ratio of SSB to RO corresponding to SSBs with different indices or different frequency domain units can be the same or different. For example, SSB#1 can be mapped to 2 ROs, SSB#2 can be mapped to 4 ROs, and SSB#3 can be mapped to 2 ROs.

[0461] In one implementation, the mapping ratio can be a mapping ratio for a set of frequency domain SSBs, wherein the set of frequency domain SSBs can contain multiple SSBs with different indices or SSBs corresponding to different frequency domain unit indices. Optionally, the set of SSBs can be multiple SSBs that are adjacent in the frequency domain. For example, the first set of SSBs contains SSBs with indices {0,1,2,3}, and the mapping ratio between SSBs and ROs corresponding to this set of SSBs is 1:2, that is, 1 SSB is mapped to 2 ROs. The second set of SSBs contains SSBs with indices {4,5,6,7}, and the mapping ratio between SSBs and ROs corresponding to this set of SSBs is 1:4, that is, 1 SSB is mapped to 4 ROs. The advantage of such a non-uniform mapping ratio between SSBs and ROs is that by assigning non-uniform ROs to each SSB, some unused PRACH opportunities can be increased, giving the base station a chance to enter sleep mode and saving energy.

[0462] ◆ Used for random access related cycles, including one or more of the following combinations: random access configuration cycle, SSB-RO mapping ring, SSB-RO association cycle, SSB-RO association pattern cycle;

[0463] ◆Number of frequency domain ROs used for random access;

[0464] ◆ The frequency domain starting position of the RO used for random access; for example, the frequency domain starting position of the first RO, and the ROs in other frequency domains are calculated based on the position of the first RO and the size of the frequency domain resources occupied by the RO, and / or the frequency domain interval between the ROs;

[0465] ◆ Random access preamble root sequence index used for random access;

[0466] ◆ The number of random access preambles used for random access, for example, the number of preambles used for random access on a single RO;

[0467] ◆Power-related configurations for random access include at least one of the following:

[0468] The target received power of the preamble for random access, and the path loss compensation coefficient alpha for random access, such as alpha × path loss. When alpha is less than 1, it indicates partial path loss compensation; alpha = 1, it indicates full path loss compensation; alpha > 1, it indicates excessive path loss compensation. This scenario is beneficial when using the ordinary preamble target received power, as it can additionally increase the power of the UE when transmitting the preamble on the RO associated with the second type SSB. In one implementation, the condition for the UE to perform excessive path loss compensation can be determined based on the index of the frequency division multiplexing SSB or the corresponding frequency domain unit index. For example, for four frequency division multiplexing SSBs, according to the order of frequency unit index from low to high, the SSB indices are 0, 1, 2, 3, then alpha > 1 for SSB 0 and / or SSB 3. The advantage of doing this is that it compensates the power of the SSB corresponding to the low (e.g., SSB 0) or high frequency domain index (e.g., SSB 3), making it the same as the power of the mid-frequency domain index SSB, such as SSB 1 and 2, ensuring that the frequency division multiplexing SSBs have the same coverage range.

[0469] The power increment difference (delta value) used for random access, the power ramping priority and / or step size used for random access, etc.; the transmit power P is determined based on one or more of the target received power P0, alpha × path loss, delta, power ramping step size × number of retransmissions.

[0470] Information related to the transmit power of the SSB in frequency division multiplexing.

[0471] In one implementation, the information includes the transmission power Py, where y = 0, 1, ..., Y-1, for determining the transmission power Py corresponding to the transmission of Y frequency division multiplexing SSBs. The transmission power of the Y SSBs can be different. The UE can calculate the power required for preamble transmission based on the information related to the transmission power of the frequency division multiplexing SSBs.

[0472] - In one implementation, the information includes the transmit power of the reference SSB in the frequency division multiplexing SSB and the power offset of other frequency division multiplexing SSBs relative to the reference SSB. The UE can determine the corresponding transmit power Py, y = 0, 1, ..., Y-1 of Y frequency division multiplexing SSBs based on the transmit power of the reference SSB and the power offset O. The beneficial effect of doing so is that the base station can flexibly configure the power corresponding to the frequency division multiplexing SSB, thereby ensuring that the required coverage range is met in different directions.

[0473] ◆The instruction information sent by the Type 2 SSB may be one or a combination of the following:

[0474] In one implementation, the information indicates the frequency domain position of the transmitted SSB within the frequency domain resource corresponding to the second type of SSB burst. This can be indicated using a bitmap. For example, the first / leftmost bit in the bitmap corresponds to the SSB corresponding to SSB index 0 or the lowest frequency domain unit in the second type of SSB burst, the second bit corresponds to the SSB corresponding to SSB index 1 or the second lowest frequency domain unit in the second type of SSB burst, and so on. A value of 0 in the bitmap indicates that the corresponding SSB is not transmitted, while a value of 1 indicates that the corresponding SSB is transmitted.

[0475] In one implementation, the information indicates the time and frequency domain positions of the transmitted SSB within the frequency and time domain resources corresponding to the second type of SSB burst, and can be expressed using bits. Figure 1 Bitmap 2 is used to indicate the time domain location, and bitmap 3 is used to indicate the frequency domain location, for example, bitmap 4. Figure 1 The first / leftmost bit in bitmap 2 corresponds to the SSB corresponding to the lowest time-domain unit in the second type of SSB burst; the second / leftmost bit in bitmap 2 corresponds to the SSB corresponding to the lowest frequency-domain unit in the second type of SSB burst.

[0476] ■ The UE selects an SSB, which is included in the second type of SSB burst. Specifically, the method for the UE to select an SSB may be:

[0477] ◆In one implementation, if at least one reference signal power measurement, such as SS-RSRP, has an SSB with a power measurement value higher than the power threshold available, then the SSB with the power measurement value higher than the power threshold is selected; otherwise, any SSB is selected, wherein the power threshold can be obtained through the SIB1 message.

[0478] ◆In one implementation, if at least one reference signal power measurement value, such as SS-RSRP, is available with an SSB that is higher than the power threshold, then one of the multiple SSBs with a power measurement value higher than the power threshold is randomly selected, or the SSB with the highest power measurement value among the multiple SSBs with a power measurement value higher than the power threshold is selected; otherwise, any SSB is selected, wherein the power threshold can be obtained through the SIB1 message.

[0479] ■The UE selects the random access resource associated with the selected SSB;

[0480] ◆In one implementation, considering that different frequency domain units correspond to different SSBs and can correspond to different initial uplink / downlink BWPs, the UE can select the RO on the initial uplink BWP associated with the SSB.

[0481] ◆In one implementation, when the SSB and the initial uplink BWP are associated one-to-one, the ROs included in the initial uplink BWP are only associated with the SSB (index);

[0482] ◆In one implementation, when the SSB and the initial uplink BWP are in a many-to-one relationship, the ROs included in the initial uplink BWP are associated with the multiple SSBs (indexes) associated with the initial uplink BWP.

[0483] ■ Based on the obtained measurement feedback values, send gURS.

[0484] ◆In one implementation, when gURS is based on sequence transmission, taking PRACH as an example, PRACH resources (including PRACH time and frequency resources, PRACH occasion or RACH occasion (RO), or PRACH sequence) can be grouped. Each group corresponds to one or a group of measurement feedback values. The UE determines the corresponding PRACH resource group based on the obtained measurement feedback values, and selects or determines the PRACH resources from the obtained PRACH resource groups for PRACH transmission.

[0485] ◆In one implementation, when gURS is based on data transmission, such as PUCCH and / or PUSCH, the UE sends the obtained measurement feedback value to the network device using the corresponding PUCCH and / or PUSCH resources; wherein,

[0486] The corresponding PUCCH and / or PUSCH resources (including time and frequency resources, and / or DMRS resources) can be pre-configured or obtained by the UE through the configuration information of the network device;

[0487] Alternatively, PUSCH can be msg3 PUSCH.

[0488] Optionally, PUCCH can be the PUCCH following msg4.

[0489] Optionally, the measurement feedback value can be sent via UCI on PUSCH;

[0490] Optionally, the measurement feedback value can be carried via MAC CE;

[0491] ■ In one implementation, when the UE receives an indication from the base station to enable Type 2 SSB (or Type 2 SSB burst) transmission and / or the UE meets the state conditions for receiving Type 2 SSB and / or the UE detects Type 2 SSB, the UE enables the gURS resource corresponding to the Type 2 SSB, wherein the specific implementation includes one or more of the following combinations:

[0492] ◆Identify the resources from which gURS is sent, including one or more of the following:

[0493] In one implementation, when there is a dedicated gURS resource allocated for the second type SSB, and when the UE receives an indication from the base station to enable the transmission of the second type SSB and / or the UE meets the state conditions for using DBF, the UE selects a gURS resource from the dedicated gURS resource for enabling the transmission of the second type SSB for transmission.

[0494] In one implementation, when multiple available gURS resources are available, one is randomly selected for transmission with equal probability.

[0495] ■ Send gURS using the selected gURS resource, including one or more of the following combinations.

[0496] ◆ Transmission power confirmation, including

[0497] In one implementation, if the SSB associated with the selected gURS resource corresponds to a mid-frequency domain index, for example, if the frequency domain index k corresponding to the SSB is greater than or equal to k1, and the frequency domain index k corresponding to the SSB is less than or equal to k2, for example, where k1 is less than N / 2 and k2 is greater than N / 2, and k1 and k2 can be preset by the protocol or configured through higher-layer signaling, then the UE uses power P1 to transmit the gURS signal; and / or,

[0498] In one implementation, if the SSB associated with the selected gURS resource corresponds to a low or high frequency domain index, for example, if the frequency domain index k corresponding to the SSB is less than or equal to k1, or the frequency domain index k corresponding to the SSB is greater than or equal to k2, where k1 and k2 can be preset by the protocol or configured through higher-layer signaling, then the UE uses power P2 to send the gURS signal, where P2 = P1 + P_delta, and P_delta is a preset or network-configured power difference. In particular, P_delta is determined based on whether receiving frequency domain SSB bursts (Type II SSB bursts) is supported.

[0499] The beneficial effect of the above design is that, considering that the power of the SSB corresponding to the low or high frequency domain index is lower than the transmission power of the SSB corresponding to the mid frequency domain index (k is greater than or equal to k1, and k is less than or equal to k2), the UE can compensate for the power difference through P_delta to ensure the uplink signal coverage range; and / or,

[0500] ● The network device detects the gURS transmitted by the receiving UE, and the UE receives the feedback measurement result of the network device, specifically including one or more of the following combinations:

[0501] ■The UE receives the PDCCH scrambled by RA-RNTI on the initial downlink BWP determined above. Optionally, the initial downlink BWP includes the frequency domain resources of the corresponding SSB, and the RA-RNTI can be calculated in one or more of the following ways:

[0502] ◆In one implementation, the index of the time domain symbol, the index of the time slot, the frequency domain index, and the index value of the SSB are based on the RO resource (PRACH timing) transmitted by the UE on the initial uplink BWP.

[0503] ◆In one implementation, the index of the time domain symbol, the index of the time slot, the frequency domain index, and the index corresponding to the initial uplink BWP are based on the RO resource (PRACH timing) transmitted by the UE on the initial uplink BWP.

[0504] Figure 13 A schematic diagram of the structure of a user equipment 1300 according to at least one embodiment of the present disclosure is shown. (See reference...) Figure 13The user equipment 1300 includes a transceiver 1301 and a controller 1302. The transceiver 1301 is configured to transmit data or signals and receive data or signals. The controller 1302 is coupled to the transceiver 1301 and configured to perform control to cause the user equipment 1300 to perform methods according to embodiments of the present disclosure. In one implementation, the user equipment 1300 may further include a memory (not shown) storing computer-executable instructions that, when executed by the controller 1302, allow the user equipment 1300 to perform at least one method corresponding to the above embodiments of the present disclosure.

[0505] Figure 14 A schematic diagram of the structure of a base station 1400 according to at least one embodiment of the present disclosure is shown. (See reference...) Figure 14 The base station 1400 includes a transceiver 1401 and a controller 1402. The transceiver 1401 is configured to transmit data or signals and receive data or signals. The controller 1402 is coupled to the transceiver 1401 and configured to perform control such that the base station 1400 performs methods according to embodiments of the present disclosure. In one implementation, the base station 1400 may further include a memory (not shown) storing computer-executable instructions that, when executed by the controller 1402, allow the base station 1400 to perform at least one method corresponding to the above embodiments of the present disclosure.

[0506] Those skilled in the art will understand that this invention includes devices for performing one or more of the operations described in this application. These devices may be specifically designed and manufactured for the desired purpose, or may include known devices found in general-purpose computers. These devices have computer programs stored therein that can be selectively activated or reconfigured. Such computer programs may be stored in a device (e.g., a computer)-readable medium or in any type of medium suitable for storing electronic instructions and coupled to a bus, including but not limited to any type of disk (including floppy disks, hard disks, optical disks, CD-ROMs, and magneto-optical disks), ROM (Read-Only Memory), RAM (Random Access Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic cards, or optical cards. That is, a readable medium includes any medium by which a device (e.g., a computer) stores or transmits information in a readable form.

[0507] Those skilled in the art will understand that each block in these structural diagrams and / or block diagrams and / or flow diagrams, as well as combinations of blocks in these structural diagrams and / or block diagrams and / or flow diagrams, can be implemented using computer program instructions. Those skilled in the art will also understand that these computer program instructions can be provided to a processor of a general-purpose computer, a specialized computer, or other programmable data processing method for implementation, thereby enabling the processor of the computer or other programmable data processing method to execute the schemes specified in the blocks or plurality of blocks of the structural diagrams and / or block diagrams and / or flow diagrams disclosed herein.

[0508] Those skilled in the art will understand that the steps, measures, and schemes in the various operations, methods, and processes discussed in this invention can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this invention can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and schemes in the prior art that are similar to those disclosed in this invention can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0509] The above description is only a partial embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method executed by a user equipment (UE) in a communication system, comprising: Receive downlink reference signal burst, wherein the downlink reference signal burst includes Y downlink reference signals of frequency division multiplexing in a first mode, the Y downlink reference signals include at least one first downlink reference signal, a first frequency associated with the at least one first downlink reference signal is within a first frequency range, and the first frequency range is within a second frequency range; Uplink signals are transmitted and / or downlink signals are received based on a first frequency domain resource, wherein the bandwidth of the first frequency domain resource is associated with the frequency domain resources of at least a portion of the Y downlink reference signals.

2. The method according to claim 1, wherein, The first frequency domain resource is determined by at least one of the following: The frequency domain resources occupied by the P downlink reference signals detected in the downlink reference signal burst; The frequency domain resources occupied by the P downlink reference signals and the third frequency domain offset, wherein the third offset is the frequency domain offset relative to the frequency domain resources occupied by the P downlink reference signals; The frequency domain resources occupied by K downlink reference signals among the Y downlink reference signals, where K is not less than P and K is not greater than Y; The frequency domain resources occupied by the K downlink reference signals and the fourth frequency domain offset, wherein the fourth frequency domain offset is the frequency domain offset relative to the frequency domain resources occupied by the Y downlink reference signals; The frequency domain resources occupied by Z downlink reference signals out of the Y downlink reference signals, where Z is not greater than Y.

3. The method according to claim 2, further comprising: Receive indication information regarding the positions of the configured K downlink reference signals in the first mode. The receiving of the downlink reference signal burst includes: receiving the downlink reference signal burst based on the location indication information.

4. The method according to claim 1, wherein, The Y downlink reference signals correspond to multiple carriers, and the third frequency domain resource for transmitting and / or receiving signals corresponding to each carrier is determined based on at least one of the following: the frequency domain resource corresponding to the Y downlink reference signals, the first frequency domain resource, and information related to the minimum channel bandwidth.

5. The method according to claim 1, wherein, The minimum channel bandwidth related information is obtained through indication information in the detected P downlink reference signals.

6. The method according to claim 1, wherein, The Y downlink reference signals are associated with frequency domain resources used for transmitting and / or receiving signals. The association relationship includes one downlink reference signal corresponding to one frequency domain resource, or multiple downlink reference signals corresponding to one frequency domain resource.

7. The method according to claim 1, wherein, The at least one first downlink reference signal includes the downlink reference signal with the smallest index in each time unit corresponding to the first mode, or the downlink reference signal with the largest index in each time unit, or a reference signal related to the median value of the index in each time unit.

8. The method according to claim 7, wherein, The received downlink reference signal burst includes: Based on information related to the first downlink reference signal, multiple downlink reference signals of the first mode frequency division multiplexing are received.

9. The method according to claim 8, wherein, The information related to the first downlink reference signal includes predefined frequency information, which is related to the first frequency, or... The information related to the first downlink reference signal is obtained based on the received configuration information related to the first mode. The information related to the first downlink reference signal is related to at least one of the following: the first frequency, the first frequency range, or the first frequency offset of the first frequency relative to the first reference frequency, and the first reference frequency.

10. The method according to claim 9, wherein, The first reference frequency is one of the following: a frequency reference location related to frequency domain resources; a designated frequency; or the frequency of a reference signal related to the UE. The reference signals related to the UE include: signals used to activate the UE to receive the third downlink reference signal or signals used to wake up the UE.

11. The method according to claim 9, wherein, The configuration information related to the first mode includes at least one of the following: information related to the second pattern corresponding to the first mode, configuration parameter information of the downlink reference signal in the first mode, and information on the number of downlink reference signals in the first mode's intermediate frequency division multiplexing. The second pattern includes Y downlink reference signals that are frequency-division multiplexed on one time-domain unit, or it includes Y downlink reference signals that are frequency-division multiplexed on multiple time-domain units.

12. The method according to claim 8, wherein, In the first mode, multiple downlink reference signals are indexed either in the frequency domain first and then in the time domain, or in the time domain first and then in the frequency domain.

13. The method according to claim 7, wherein, The configuration parameter information of the downlink reference signal in the first mode includes at least one of the following: the number of downlink reference signals in the first mode, the number of time domain units occupied, and the number of frequency domain units occupied.

14. The method according to any one of claims 4-13, wherein, The configuration information related to the first mode is received through at least one of the following: Broadcast Channel PBCH; System Information Block Related PDCCH or PDSCH; Radio Resource Control (RRC) signaling; a signal for activating the UE to receive the third downlink reference signal or a signal for waking up the UE. The configuration information related to the first mode is indicated by the sequence information of the signal used to activate the UE to receive the third downlink reference signal or the signal used to wake up the UE.

15. The method according to claim 1, further comprising: Select a downlink reference signal from the received downlink reference signal. The uplink transmission resources used to transmit the uplink signal include RO resources on the uplink frequency domain resources associated with the selected downlink reference signal, or The uplink transmission resources are resources dedicated to the downlink reference signals in the first mode.

16. The method according to claim 15, wherein, Sending uplink signals includes: The transmit power is determined based on the index of the selected downlink reference signal; The uplink signal is transmitted at the aforementioned transmission power.

17. The method according to claim 1, further comprising: The second frequency offset is obtained based on the received downlink reference signal. A second frequency reference position related to the first frequency domain resource is determined based on at least one of the second frequency offset, the index information of the received downlink reference signal, the number of frequency domain resources occupied by the received downlink reference signal, and the subcarrier spacing corresponding to the received downlink reference signal.

18. A method performed by a network device in a communication system, comprising: A downlink reference signal burst is transmitted, wherein the downlink reference signal burst includes Y downlink reference signals of frequency division multiplexing in a first mode, the Y downlink reference signals include at least one first downlink reference signal, a first frequency associated with the at least one first downlink reference signal is within a first frequency range, and the first frequency range is within a second frequency range; Uplink signals are transmitted and / or downlink signals are received based on a first frequency domain resource, wherein the bandwidth of the first frequency domain resource is associated with the frequency domain resources of at least a portion of the Y downlink reference signals.

19. A user equipment (UE), comprising: A transceiver is configured to transmit and / or receive signals; The controller is configured to control the UE to perform the method according to any one of claims 1-17.

20. A network device, comprising: A transceiver is configured to transmit and / or receive signals; The controller is configured to control the network device to perform the method according to claim 18.

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