Random access method and equipment

Abstract

The invention relates to a random access method and equipment. In one aspect, there is provided a method performed by a user equipment (UE), comprising: receiving configuration information for random access, the configuration information for random access comprising first configuration information related to a normal random access and second configuration information related to a second random access, the second random access being related to a second feature, the second configuration information comprises at least one of the following items: configuration information of an uplink (UL) sub-band resource related to a second feature, and information related to configuration of a second random access; determining an effective RO in random access opportunities RO obtained based on the configuration information of the UL sub-band resource; obtaining mapping from at least one first downlink reference signal to the effective RO; and performing random access by using the first downlink reference signal selected from the at least one first downlink reference signal and the corresponding effective RO.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communications, and more particularly, to a random access method and device. Background Art

[0002] To meet the increased demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or quasi-5G communication systems. Therefore, 5G or quasi-5G communication systems are also referred to as "beyond 4G networks" or "post-LTE systems."

[0003] 5G communication systems are implemented in higher-frequency (millimeter wave, mmWave) bands, such as the 60 GHz band, to achieve higher data rates. To reduce radio wave propagation losses and increase transmission distances, 5G communication systems utilize technologies such as beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antennas.

[0004] In addition, in the 5G communication system, system network improvements are being developed based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communications, wireless backhaul, mobile networks, collaborative communications, coordinated multi-point (CoMP), and receiving-end interference cancellation.

[0005] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) have been developed as advanced coding modulation (ACM), as well as filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies. Summary of the Invention

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

[0007] receiving configuration information for random access, the configuration information for random access including first configuration information related to normal random access and second configuration information related to second random access, the second random access being related to a second feature, the second configuration information including at least one of the following: configuration information of uplink (UL) subband resources related to the second feature, and information related to configuration of the second random access;

[0008] Determining a valid random access opportunity (RO) among the random access opportunities (ROs) obtained based on the configuration information of the UL subband resource;

[0009] Obtaining a mapping of at least one first downlink reference signal to the valid RO;

[0010] Perform random access using a first downlink reference signal selected from the at least one first downlink reference signal and a corresponding valid RO.

[0011] In one implementation, the second random access includes random access for sub-band full-duplex (SBFD),

[0012] where the configuration information of the sub-band resources includes the time-domain resource configuration and / or the frequency-domain resource configuration corresponding to the SBFD UL sub-band.

[0013] In one implementation, the information related to the configuration of the second random access includes at least one of the following:

[0014] Configuration information for the second random access;

[0015] Indication information sharing the configuration of the common random access.

[0016] In one implementation, the configuration information for the second random access includes at least one of the following:

[0017] Configuration index for the second random access;

[0018] Number of frequency-domain ROs for the second random access;

[0019] Frequency-domain starting position of the RO for the second random access;

[0020] Preamble root sequence index for the second random access;

[0021] Number of preambles for the second random access;

[0022] Power-related configuration for the second random access.

[0023] In one implementation, the power-related configuration for the second feature includes at least one of the following: path loss compensation coefficient related to the second feature, target received power of the preamble, power increase difference, power ramp priority and / or step related to the second feature.

[0024] In one implementation, the second random access includes random access for sub-band full-duplex (SBFD), and the valid ROs include at least one of the following:

[0025] ROs in the uplink part of the time-division duplex (TDD) configuration;

[0026] ROs not earlier than the first downlink reference signal corresponding to the time slot where they are located;

[0027] ROs whose distance from the last downlink symbol in the slot or from the last symbol corresponding to the first downlink reference signal in the slot is greater than or equal to a first threshold value;

[0028] ROs with all symbols being SBFD symbols;

[0029] ROs with all symbols being SBFD symbols or flexible symbols;

[0030] ROs where the interval between the first symbol and the last SBFD symbol in the slot corresponding to the first symbol is not less than a second threshold value;

[0031] ROs with at least one frequency domain unit or all frequency domain units in the SBFD uplink subband.

[0032] In one implementation, the mapping is obtained based on the mapping ratio of the synchronization signal and the physical broadcast signal block SSB to the RO in the first configuration information and the valid ROs.

[0033] At least one embodiment of the present disclosure provides a method performed by a UE in a communication system, including:

[0034] Receiving configuration information of random access resources, where the random access resources include random access resources related to a second random access, and the second random access is related to a second feature;

[0035] Performing random access using the random access resources,

[0036] Where the configuration information of the random access resources includes at least one of the following:

[0037] Index of the first downlink reference signal and index of the mapped ROs, where the mapped ROs include the second type of ROs corresponding to the second random access and / or the first type of ROs corresponding to the normal random access;

[0038] RO index indication, where the ROs include the second type of ROs and / or the first type of ROs;

[0039] Dedicated preamble index;

[0040] Dedicated RNTI;

[0041] Preamble transmission resource configuration.

[0042] In one implementation, the configuration information of the random access resources is received through at least one of the following:

[0043] PDCCH command;

[0044] MAC control element;

[0045] RRC high-layer signaling.

[0046] In one implementation, the second random access includes a random access for SBFD, and the first downlink reference signal index, the index of the mapped RO, or the RO index indicates that the corresponding RO index corresponds to a first time range, and the first time range includes at least one of the following:

[0047] Mapping loop of the first downlink reference signal - RO, mapping period of the first downlink reference signal - RO, mapping pattern period of the first downlink reference signal - RO, mapping loop of the first downlink reference signal - SBFD RO, mapping period of the first downlink reference signal - SBFD RO, mapping pattern period of the first downlink reference signal - SBFD RO, a predetermined number of time units, random access configuration period, TDD pattern configuration period, SBFD configuration period.

[0048] In one implementation, if the SBFD configuration period is different from the first time range, the RO indicated by the RO index indication is determined based on the number of ROs in the first time range.

[0049] In one implementation, if the RO index indication corresponding RO index is greater than or equal to the number of ROs in the first time range, the RO indicated by the RO index indication is determined in a cyclic manner within the first time range.

[0050] In one implementation, the preamble transmission resource configuration includes at least one of the following:

[0051] Time unit interval, used to indicate the interval between the preamble transmission resource and the time when the random access resource indication is received;

[0052] Starting symbol of the RO;

[0053] Preamble format index;

[0054] Number of time domain and / or frequency domain resources occupied by the RO;

[0055] Preamble root sequence index;

[0056] Preamble length;

[0057] Preamble sub - carrier spacing;

[0058] Preamble transmission resource period.

[0059] In one implementation, the RO is a valid RO, a valid SBFD RO, or a configured RO.

[0060] In one implementation, if the RO determined according to the configuration information of the random access resource conflicts with other transmissions, the preamble transmission on the RO is cancelled.

[0061] In one implementation, the method further includes: detecting feedback from the base station using a first RNTI,

[0062] where the first RNTI includes at least one of the following:

[0063] RA-RNTI obtained based on the configured RO frequency domain index;

[0064] RA-RNTI obtained based on the feature index or feature group index;

[0065] RA-RNTI obtained based on the predetermined RO symbol index;

[0066] C-RNTI;

[0067] Configured dedicated RNTI.

[0068] In one implementation, the configured RO frequency domain index includes at least one of the following:

[0069] The frequency domain index of the first RO of the UE;

[0070] The frequency domain index of the last RO of the UE;

[0071] The frequency domain index of each RO of the UE.

[0072] In one implementation, if the random access configuration index of the second random access is the same as the random access configuration index of the normal random access, or the time unit corresponding to the RO for which the UE performs random access further includes an RO for other features, the RA-RNTI obtained based on the configured RO frequency domain index is used to detect feedback from the base station.

[0073] In one implementation, the UE detects feedback from the base station in a first resource, and the first resource includes at least one of the following:

[0074] A UE-specific or second random access-specific control resource set supporting the second random access;

[0075] A UE-specific or second random access-specific search space supporting the second random access;

[0076] A UE-specific or second random access-specific time window supporting the second random access.

[0077] According to an embodiment of the present disclosure, there is provided a method performed by a base station in a communication system, including:

[0078] Send configuration information for random access, where the configuration information for random access includes first configuration information related to normal random access and second configuration information related to second random access. The second random access is related to a second feature, and the second configuration information includes at least one of the following: configuration information of an uplink (UL) subband resource related to the second feature, information related to the configuration of the second random access;

[0079] Receive a random access signal sent by a UE,

[0080] where the random access signal is sent by the UE using a first downlink reference signal selected from at least one first downlink reference signal and a corresponding valid random access opportunity (RO),

[0081] where the corresponding valid RO is a valid RO in the random access opportunity RO obtained based on the configuration information of the UL subband resource,

[0082] The at least one first downlink reference signal is mapped to the valid RO.

[0083] In one implementation, the second random access includes random access for subband full duplex (SBFD),

[0084] where the configuration information of the subband resource includes time domain resource configuration and / or frequency domain resource configuration corresponding to the SBFD UL subband.

[0085] In one implementation, the information related to the configuration of the second random access includes at least one of the following:

[0086] Configuration information for the second random access;

[0087] Indicator information for sharing the configuration of normal random access.

[0088] In one implementation, the configuration information for the second random access includes at least one of the following:

[0089] Configuration index for the second random access;

[0090] Number of frequency domain ROs for the second random access;

[0091] Frequency domain start position of the RO for the second random access;

[0092] Root sequence index of the preamble for the second random access;

[0093] Number of preambles for the second random access;

[0094] Power related configuration for the second random access.

[0095] In one implementation, the power-related configuration for the second feature includes at least one of the following: path loss compensation coefficient related to the second feature, preamble target received power, power increase difference, power ramp priority and / or step related to the second feature.

[0096] In one implementation, the second random access includes random access for sub-band full duplex (SBFD), and the valid ROs include at least one of the following:

[0097] ROs in the uplink part of a time division duplex (TDD) configuration;

[0098] ROs not earlier than the first downlink reference signal corresponding to the time slot;

[0099] ROs whose distance from the last downlink symbol in the time slot or the last symbol corresponding to the first downlink reference signal in the time slot is greater than or equal to a first threshold;

[0100] ROs all of whose symbols are SBFD symbols;

[0101] ROs all of whose symbols are SBFD symbols or flexible symbols;

[0102] ROs whose interval between the first symbol and the last SBFD symbol in the time slot corresponding to the first symbol is not less than a second threshold;

[0103] ROs with at least one frequency domain unit or all frequency domain units in the SBFD uplink sub-band.

[0104] In one implementation, the mapping is obtained based on the mapping ratio of the synchronization signal and the physical broadcast signal block (SSB) to the RO in the first configuration information and the valid ROs.

[0105] According to an embodiment of the present disclosure, there is provided a method performed by a base station in a communication system, including:

[0106] Sending configuration information of random access resources, where the random access resources include random access resources related to the second random access, and the second random access is related to the second feature;

[0107] Receiving a random access signal sent using the random access resources,

[0108] Wherein, the configuration information of the random access resources includes at least one of the following:

[0109] Index of the first downlink reference signal and index of the mapped ROs, where the mapped ROs include the second type of ROs corresponding to the second random access and / or the first type of ROs corresponding to the normal random access;

[0110] RO index indication, where the RO includes a second type of RO and / or a first type of RO;

[0111] Dedicated preamble index;

[0112] Dedicated RNTI;

[0113] Preamble transmission resource configuration.

[0114] In one implementation, the configuration information of the random access resource is sent through at least one of the following:

[0115] PDCCH command;

[0116] MAC control element;

[0117] RRC high-layer signaling.

[0118] In one implementation, the second random access includes random access related to SBFD, and the index of the first downlink reference signal, the index of the mapped RO, or the RO index indication corresponding RO index corresponds to a first time range, and the first time range includes at least one of the following:

[0119] Mapping loop of the first downlink reference signal - RO, mapping period of the first downlink reference signal - RO, mapping pattern period of the first downlink reference signal - RO, mapping loop of the first downlink reference signal - SBFD RO, mapping period of the first downlink reference signal - SBFD RO, mapping pattern period of the first downlink reference signal - SBFD RO, a predetermined number of time units, random access configuration period, TDD pattern configuration period, SBFD configuration period.

[0120] In one implementation, if the SBFD configuration period is different from the first time range, the RO indicated by the RO index indication is determined based on the number of ROs in the first time range.

[0121] In one implementation, if the RO index indication corresponding RO index is greater than or equal to the number of ROs in the first time range, the RO indicated by the RO index indication is determined in a cyclic manner within the first time range.

[0122] In one implementation, the preamble transmission resource configuration includes at least one of the following:

[0123] Time unit interval, used to indicate the interval between the preamble transmission resource and the time when the random access resource indication is received;

[0124] Starting symbol of the RO;

[0125] Preamble format index;

[0126] The number of time domain and / or frequency domain resources occupied by the RO;

[0127] The root sequence index of the preamble;

[0128] The length of the preamble;

[0129] The subcarrier spacing of the preamble;

[0130] The preamble transmission resource period.

[0131] In one implementation, the RO is a valid RO, a valid SBFD RO, or a configured RO.

[0132] In one implementation, if the RO determined according to the configuration information of the random access resource conflicts with other transmissions, the preamble transmission on the RO is cancelled.

[0133] In one implementation, the method further includes: sending feedback to the UE using a first RNTI,

[0134] where the first RNTI includes at least one of the following:

[0135] The RA-RNTI obtained based on the configured RO frequency domain index;

[0136] The RA-RNTI obtained based on the feature index or the feature group index;

[0137] The RA-RNTI obtained based on the predetermined RO symbol index;

[0138] C-RNTI;

[0139] The configured dedicated RNTI.

[0140] In one implementation, the configured RO frequency domain index includes at least one of the following:

[0141] The frequency domain index of the first RO of the UE;

[0142] The frequency domain index of the last RO of the UE;

[0143] The frequency domain index of each RO of the UE.

[0144] According to an embodiment of the present disclosure, there is provided a UE in a communication system, including:

[0145] A transceiver configured to transmit and / or receive signals;

[0146] A controller configured to control the UE to execute the method according to an embodiment of the present disclosure.

[0147] According to an embodiment of the present disclosure, a base station in a communication system is provided, including:

[0148] A transceiver configured to transmit and / or receive signals;

[0149] A controller configured to control the base station to execute the method according to the embodiment of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0150] Figure 1 An example wireless network according to various embodiments of the present disclosure is shown;

[0151] Figure 2a And Figure 2b An example wireless transmission and reception path according to the present disclosure is shown;

[0152] Figure 3a An example user equipment according to the present disclosure is shown, and Figure 3b An example base station according to the present disclosure is shown; and

[0153] Figure 4 A schematic diagram of a 4-step random access process is shown;

[0154] Figure 5 An example configuration diagram of SBFD is shown;

[0155] Figure 6 An example diagram of determining the mapping of SSB to SBFD RO is shown;

[0156] Figure 7 An example diagram of RO indexes within a certain time period range is shown;

[0157] Figure 8 An example diagram when the SBFD configuration period and a certain time period do not match is shown;

[0158] Figure 9 A schematic structural diagram of a user equipment according to at least one embodiment of the present disclosure is shown;

[0159] Figure 10 A schematic structural diagram of a network device (e.g., a base station) according to at least one embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0160] The following description of the accompanying drawings is provided to facilitate a thorough understanding of various embodiments of the present disclosure defined by the claims and their equivalents. This description includes various specific details to facilitate understanding but should only be considered exemplary. Thus, those of ordinary skill in the art will recognize that various changes and modifications 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 structures may be omitted for clarity and conciseness.

[0161] The terms and phrases used in the following specification and claims are not limited to their dictionary meanings but are merely used by the inventors to enable a clear and consistent understanding of the present disclosure. Thus, it should be apparent to those skilled in the art that the following description of the various embodiments of the present disclosure is for illustrative purposes only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0162] 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 such surfaces.

[0163] The term "comprises" or "may comprise" refers to the presence of the corresponding disclosed function, operation, or component that can be used in various embodiments of the present disclosure, without limiting the presence of one or more additional functions, operations, or features. In addition, the term "comprises" or "has" can be interpreted as indicating certain characteristics, numbers, steps, operations, elements, components, or combinations thereof, but should not be construed as excluding the possibility of the presence of one or more other characteristics, numbers, steps, operations, elements, components, or combinations thereof.

[0164] The term "or" used in various embodiments of the present disclosure includes any of the recited terms and all combinations thereof. For example, "A or B" can include A, can include B, or can include both A and B.

[0165] Unless defined otherwise, all terms (including technical or scientific terms) used in the present disclosure have the same meaning as understood by those of ordinary skill in the art to which the present disclosure pertains. Commonly used terms defined in a dictionary are interpreted as having a meaning consistent with the context in the relevant technical field and should not be interpreted idealistically or overly formally unless explicitly so defined in the present disclosure.

[0166] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System for Mobile Communications (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5th generation (5G) system or New Radio (NR), etc. In addition, the technical solutions of the embodiments of the present application can be applied to future-oriented communication technologies.

[0167] Figure 1 FIG. shows an example wireless network 100 in accordance with various embodiments of the present disclosure. Figure 1 The embodiments of the wireless network 100 shown are for illustrative purposes only. Other embodiments of the wireless network 100 can be used without departing from the scope of the present disclosure.

[0168] The wireless network 100 includes gNodeB (gNB) 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a proprietary IP network, or other data networks.

[0169] Depending on the network type, other well-known terms such as "base station" or "access point" can be used in place of "gNodeB" or "gNB". For 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 such as "mobile station", "user station", "remote terminal", "wireless terminal" or "user device" can be used in place of "user equipment" or "UE". For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to the remote wireless devices that wirelessly access the gNB, whether the UE is a mobile device (such as a mobile phone or smartphone) or a device that is typically considered fixed (such as a desktop computer or vending machine).

[0170] gNB 102 provides wireless broadband access to network 130 for a first plurality of user equipment (UE) within coverage area 120 of gNB 102. The first plurality of UEs includes: UE 111, which can be located in a small business (SB); UE 112, which can be located in an enterprise (E); UE 113, which can be located in a WiFi hotspot (HS); UE 114, which can be located in a first residence (R); UE 115, which can be located in a second residence (R); UE 116, which can be a mobile device (M), such as a cellular phone, wireless laptop computer, wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within coverage area 125 of gNB 103. The second plurality of UEs includes UE 115 and UE 116. In some embodiments, one or more of gNBs 101 - 103 are capable of communicating with each other and with UEs 111 - 116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX, or other advanced wireless communication technologies.

[0171] The dashed lines show the approximate extent of coverage areas 120 and 125, which are shown as approximately circular merely for purposes of illustration and explanation. It should be clearly understood that the coverage areas associated with a gNB, such as coverage areas 120 and 125, can have other shapes, including irregular shapes, depending on the configuration of the gNB and changes in the radio environment associated with natural and man-made obstacles.

[0172] [[ID=⑨]]As described in more detail below, one or more of gNB 101, gNB 102, and gNB 103 include a 2D antenna array as described in embodiments of the present disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook designs and structures for systems with 2D antenna arrays.

[0173] AlthoughFigure 1 shows an example of a wireless network 100, but various changes can be made Figure 1 to it. For example, the wireless network 100 can include any number of gNBs and any number of UEs arranged in any suitable manner. Also, gNB 101 can communicate directly with any number of UEs and provide those UEs with wireless broadband access to the network 130. Similarly, each of the gNBs 102 - 103 can communicate directly with the network 130 and provide the UEs with direct wireless broadband access to the network 130. Additionally, gNBs 101, 102, and / or 103 can provide access to other or additional external networks (such as an external telephone network or other types of data networks).

[0174] Figure 2a and Figure 2b shows an example wireless transmit and receive path according to the present disclosure. In the following description, the transmit path 200 can be described as being implemented in a gNB (such as gNB 102), while the receive path 250 can be described as being implemented in a UE (such as UE 116). However, it should be understood that the receive path 250 can be implemented in a gNB, and the transmit path 200 can be implemented in a UE. In some embodiments, the receive path 250 is configured to support codebook design and structure for a system with a 2D antenna array as described in the embodiments of the present disclosure.

[0175] The transmit path 200 includes a channel coding and modulation block 205, a serial - to - parallel (S - to - P) block 210, an N - point inverse fast Fourier transform (IFFT) block 215, a parallel - to - serial (P - to - S) block 220, a cyclic prefix addition block 225, and an up - converter (UC) 230. The receive path 250 includes a down - converter (DC) 255, a cyclic prefix removal block 260, a serial - to - parallel (S - to - P) block 265, an N - point fast Fourier transform (FFT) block 270, a parallel - to - serial (P - to - S) block 275, and a channel decoding and demodulation block 280.

[0176] 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 using 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 demultiplexes) the serial modulation symbols into parallel data to generate N parallel symbol streams, where N is the number of IFFT / FFT points used in gNB 102 and UE 116. The N-point IFFT block 215 performs an IFFT operation on the N parallel symbol streams to generate a time-domain output signal. The parallel-to-serial block 220 converts (such as multiplexes) the parallel time-domain output symbols from the N-point IFFT block 215 to generate a serial time-domain signal. The cyclic prefix addition block 225 inserts a cyclic prefix into the time-domain signal. The upconverter 230 modulates (such as upconverts) the output of the cyclic prefix addition block 225 to an RF frequency for transmission via the wireless channel. Before upconverting to the RF frequency, the signal can also be filtered at baseband.

[0177] The RF signal transmitted from gNB 102 arrives at UE 116 after passing through the wireless channel, and operations opposite to those at gNB 102 are performed at UE 116. The downconverter 255 downconverts the received signal to a baseband frequency, and the cyclic prefix removal 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 into a parallel time-domain signal. The N-point FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. The parallel-to-serial block 275 converts the parallel frequency-domain signals into 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.

[0178] Each of gNBs 101 - 103 can implement a transmit path 200 similar to that for transmitting to UEs 111 - 116 in the downlink, and can implement a receive path 250 similar to that for receiving from UEs 111 - 116 in the uplink. Similarly, each of UEs 111 - 116 can implement a transmit path 200 for transmitting to gNBs 101 - 103 in the uplink, and can implement a receive path 250 for receiving from gNBs 101 - 103 in the downlink.

[0179] Figure 2a and Figure 2b each of the components in can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, Figure 2a and Figure 2bAt least some of the components in [the system] can be implemented in software, while other components can be implemented through configurable hardware or a combination of software and configurable hardware. For example, the FFT block 270 and the IFFT block 215 can be implemented as configurable software algorithms, where the value of the number of points N can be modified according to the implementation.

[0180] In addition, although described as using FFT and IFFT, this is merely illustrative and should not be construed as limiting the scope of the present disclosure. Other types of transforms can be used, such as the discrete Fourier transform (DFT) and the inverse discrete Fourier transform (IDFT) functions. It should be understood that for the DFT and IDFT functions, the value of the variable N can be any integer (such as 1, 2, 3, 4, etc.), while for the 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.).

[0181] 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 the various components in [the system] can be combined, further subdivided, or omitted, and additional components can be added according to specific needs. Moreover, Figure 2a and Figure 2b are intended to show 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.

[0182] Figure 3a shows an example UE 116 according to the present disclosure. Figure 3a The embodiment of the UE 116 shown in [the figure] is for illustration only, and Figure 1 the UEs 111 - 115 can have the same or similar configurations. However, UEs have a wide variety of configurations, and Figure 3a the present disclosure is not limited to any specific implementation of the UE.

[0183] 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, one or more input devices 309, a display 310, and a memory 311. The memory 311 includes an operating system (OS) 312 and one or more applications 313.

[0184] The RF transceiver 302 receives an incoming RF signal transmitted by the gNB of the wireless network 100 from the antenna 301. 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 circuit 305, where the RX processing circuit 305 generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. The RX processing circuit 305 sends 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.

[0185] The TX processing circuit 303 receives analog or digital voice data from the microphone 304, or other outgoing baseband data (such as network data, email, or interactive video game data) from the controller / processor 307. The TX processing circuit 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 circuit 303 and up-converts the baseband or IF signal to an RF signal transmitted via the antenna 301.

[0186] The controller / processor 307 can include one or more processors or other processing devices and execute the OS 312 stored in the memory 311 to control the overall 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 through the RF transceiver 302, the RX processing circuit 305, and the TX processing circuit 303 according to well-known principles. In some embodiments, the controller / processor 307 includes at least one microprocessor or microcontroller.

[0187] The controller / processor 307 can also execute other processes and programs residing in the memory 311, such as operations for channel quality measurement and reporting for a system having a 2D antenna array as described in embodiments of the present disclosure. The controller / processor 307 can move data into or out of the memory 311 as needed for the execution of processes. In some embodiments, the controller / processor 307 is configured to execute the application 313 based on the OS 312 or in response to a signal received from the gNB or the operator. The controller / processor 307 is also coupled to the I / O interface 308, where the I / O interface 308 provides the UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. The I / O interface 308 is the communication path between these accessories and the controller / processor 307.

[0188] The controller / processor 307 is also coupled to the input device(s) 309 and the display 310. An operator of the UE 116 can input data into the UE 116 using the input device(s) 309. The display 310 can be a liquid crystal display or other display capable of presenting text and / or at least limited graphics (such as from a website). The memory 311 is coupled to the controller / processor 307. A portion of the memory 311 can include random access memory (RAM), while another portion of the memory 311 can include flash memory or other read-only memory (ROM).

[0189] Although Figure 3a an example of the UE 116 is shown, various changes can be made Figure 3a to it. For example, Figure 3a the various components in it can be combined, further subdivided, or omitted, and additional components can be added according to specific needs. As a specific example, the controller / processor 307 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Also, although Figure 3a the UE 116 is shown configured as a mobile phone or smartphone, the UE can be configured to operate as other types of mobile or fixed devices.

[0190] Figure 3b An example gNB 102 according to the present disclosure is shown. Figure 3b The embodiment of the gNB 102 shown in it is for illustration only, and Figure 1 other gNBs can have the same or similar configurations. However, gNBs have a wide variety of configurations, and Figure 3b the scope of the present disclosure is not limited to any particular implementation of the gNB. It should be noted that the gNB 101 and the gNB 103 can include structures the same as or similar to those of the gNB 102.

[0191] As Figure 3b shown, 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 certain 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.

[0192] RF transceivers 372a - 372n receive incoming RF signals from antennas 370a - 370n, such as signals transmitted by a UE 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, where the RX processing circuitry 376 generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. The RX processing circuitry 376 sends the processed baseband signal to the controller / processor 378 for further processing.

[0193] The TX processing circuitry 374 receives analog or digital data (such as voice data, network data, email, 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 a processed baseband or IF signal. The RF transceivers 372a - 372n receive the outgoing processed baseband or IF signal from the TX processing circuitry 374 and up - convert the baseband or IF signal to an RF signal transmitted via antennas 370a - 370n.

[0194] The controller / processor 378 can include one or more processors or other processing devices that control 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 through the RF transceivers 372a - 372n, the RX processing circuitry 376, and the TX processing circuitry 374 according to well - known principles. The controller / processor 378 can also support additional functions, such as more advanced wireless communication functions. For example, the controller / processor 378 can perform a BIS process, such as that executed by a blind interference sensing (BIS) algorithm, and decode the received signal from which the interfering signal has been subtracted. The controller / processor 378 can support any one of a variety of other functions in the gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0195] The controller / processor 378 can also execute programs and other processes residing in the memory 380, such as a basic OS. The controller / processor 378 can also support channel quality measurement and reporting for a system with a 2D antenna array as described in embodiments of the present disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTC. The controller / processor 378 can move data into or out of the memory 380 as needed for the execution of processes.

[0196] The controller / processor 378 is also coupled to a backhaul or network interface 382. The backhaul or network interface 382 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or over the network. The backhaul or network interface 382 is capable of supporting communication over any suitable wired or wireless connection(s). For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G or New Radio access technology or NR, LTE or LTE-A), the backhaul or network interface 382 is capable of allowing the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the backhaul or network interface 382 is capable of allowing the gNB 102 to communicate with a larger network (such as the Internet) via a wired or wireless local area network or via a wired or wireless connection. The backhaul or network interface 382 includes any suitable structure(s) that support communication over a wired or wireless connection, such as an Ethernet or RF transceiver.

[0197] The memory 380 is coupled to the controller / processor 378. A portion of the memory 380 can include RAM, while another portion of the memory 380 can include flash memory or other ROM. In some embodiments, multiple instructions, such as BIS algorithms, are stored in the memory. The multiple instructions are configured to cause the controller / processor 378 to perform a BIS process and decode a received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0198] As described in more detail below, the transmit and receive paths of the gNB 102 (implemented using RF transceivers 372a - 372n, TX processing circuitry 374, and / or RX processing circuitry 376) support communication aggregation with FDD cells and TDD cells.

[0199] Although Figure 3b an example of the gNB 102 is shown, various changes can be made to Figure 3b it. For example, the gNB 102 can include any number of Figure 3a each of the components shown in. As a specific example, an 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, although 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 for each RF transceiver).

[0200] The time domain unit (also referred to as the time unit) in this application can be: an OFDM symbol, a group of OFDM symbols (composed of multiple OFDM symbols), a time slot, a group of time slots (composed of multiple time slots), a subframe, a group of subframes (composed of multiple subframes), a system frame, a group of system frames (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, for example, N1 time slots plus N2 OFDM symbols.

[0201] The frequency domain unit (also referred to as the frequency unit) in this application can be: a subcarrier, a group of subcarriers (composed of multiple subcarriers), a resource block (RB), which can also be referred to as a physical resource block (PRB), a group of resource blocks (composed of multiple RBs), a bandwidth part (BWP), a group of bandwidth parts (composed of multiple BWPs), a frequency band / carrier, a group of frequency bands / carrier groups; 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, for example, M1 PRBs plus M2 subcarriers.

[0202] The exemplary embodiments of the present disclosure will be further described below with reference to the accompanying drawings.

[0203] The text and the drawings are provided only as examples to assist the reader in understanding the present disclosure. They are not intended and should not be construed as limiting the scope of the present disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art that, based on the content disclosed herein, changes can be made to the illustrated embodiments and examples without departing from the scope of the present disclosure.

[0204] Those skilled in the art of this technology can understand that, unless specifically stated, the singular forms "a", "an", "the", and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of this application means that there are the described features, integers, steps, operations, elements, and / or components, but does not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components, and / or their groups. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used here may include wireless connection or wireless coupling. The phrase "and / or" used here includes all or any unit and all combinations of one or more related listed items.

[0205] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which this application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless specifically defined as here.

[0206] Those skilled in the art of the present technology can understand that the "terminal" and "terminal device" used herein include both devices with a wireless signal receiver that only has the ability to receive without transmitting, and devices with receiving and transmitting hardware that have the receiving and transmitting hardware capable of two-way communication on a two-way communication link. Such devices can include: cellular or other communication devices, which have a single-line display or a multi-line display or a cellular or other communication device without a multi-line display; PCS (Personal Communications Service), which can combine voice, data processing, fax, and / or data communication capabilities; PDA (Personal Digital Assistant), which can include a radio frequency receiver, a pager, Internet / intranet access, a web browser, a notepad, a calendar, and / or a GPS (Global Positioning System) receiver; conventional laptop and / or palm computers or other devices, which are conventional laptop and / or palm computers or other devices with and / or including a radio frequency receiver. The "terminal" and "terminal device" used herein can be portable, transportable, installed in a vehicle (air, sea, and / or land), or suitable for and / or configured to operate locally, and / or operate in a distributed form at any other location on the earth and / or in space. The "terminal" and "terminal device" used herein can also be a communication terminal, an Internet access terminal, a music / video playback terminal, for example, it can be a PDA, a MID (Mobile Internet Device), and / or a mobile phone with music / video playback function, or can also be a smart TV, a set-top box, and other devices.

[0207] Without departing from the scope of the present invention, the term "send" in the present invention can be used interchangeably with "transmit", "report", "notify", etc.

[0208] The text and the drawings are provided only as examples to assist the reader in understanding the present disclosure. They are not intended and should not be construed as limiting the scope of the present disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art based on the content disclosed herein that the illustrated embodiments and examples can be changed without departing from the scope of the present disclosure.

[0209] The transmission links of a 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.

[0210] Nodes for positioning measurement in a wireless communication system, such as the current wireless communication system, include: the UE that initiates a positioning request message, the Location Management Function (LMF) for UE positioning and positioning assistance data distribution, the gNB or Transmission-Reception Point (TRP) that broadcasts positioning assistance data and performs uplink positioning measurement, and the UE for downlink positioning measurement. In addition, the method of the present invention can also be extended to be applied in other communication systems, such as vehicle-to-everything (V2X), for example, sidelink communication. At this time, the transmission-reception point or the UE can be any device in V2X.

[0211] Transmissions in a wireless communication system include: the transmission from the base station (gNB) to the user equipment (UE, User Equipment) (referred to as downlink transmission), and the corresponding time slot is called the downlink time slot; the transmission from the UE to the base station (referred to as uplink transmission), and the corresponding time slot is called the uplink time slot.

[0212] In the downlink communication of a wireless communication system, the system periodically transmits synchronization signals and broadcast channels to users through synchronization signal blocks (SSBs). The period is the SSB periodicity (SSB period), or is also referred to as the SSB burst periodicity. Meanwhile, the base station configures a physical random access channel configuration period. During this period, a certain number of random access transmission opportunities (also called random access opportunities, PRACH transmission occasions, ROs) are configured. After being judged by certain validity rules, these configured ROs can obtain valid ROs; and it is satisfied that all SSBs can be mapped to the corresponding valid ROs within the association period (a certain time length). In a mapping cycle from an SSB to an RO, all SSBs within an SSB period can be exactly mapped to the required random access resources. There can be one or more mapping cycles in an association period. An association pattern period from an SSB to an RO contains one or more association periods, and the mapping pattern from an SSB to an RO in each association pattern period is the same.

[0213] In a New Radio (NR) communication system, before the establishment of radio resource control, for example, during the random access process, the performance of random access directly affects the user experience. In traditional wireless communication systems such as LTE and LTE-Advanced, or in 5G or NR systems, the random access process is applied to multiple scenarios such as establishing an initial link, cell handover, re-establishing an uplink link, and RRC connection re-establishment. And it is divided into contention-based random access and contention-free random access according to whether the user exclusively occupies the preamble sequence resources. In contention-based random access, when each user attempts to establish an uplink link and selects a preamble sequence from the same preamble sequence resources, multiple users may select the same preamble sequence and send it to the base station. Therefore, the conflict resolution mechanism is an important research direction in random access. How to reduce the conflict probability and how to quickly resolve the already-occurred conflicts are the key indicators affecting the random access performance.

[0214] Figure 4 A schematic diagram showing a 4-step random access procedure is presented. For example, the contention-based random access procedure is divided into four steps, as Figure 4 shown. In the first step, the user randomly selects a preamble sequence (which can also be interchangeably referred to as "preamble" in this article) from the preamble sequence resource pool and sends it to the 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 includes the random access preamble sequence identifier, the timing advance command determined based on the time delay estimation between the user and the base station, the temporary cell radio network temporary identifier (Cell-Radio Network Temporary Identifier, C-RNTI), and the time-frequency resources allocated for the user's next uplink transmission; the user needs to search for the PDCCH carrying this feedback based on the RA-RNTI associated with the PRACH occasion where the random access preamble sequence is sent. The RA-RNTI associated with the PRACH occasion (PRACH occasion, RO) where the random access preamble sequence is sent is calculated according to the following formula:

[0215] RA-RNTI = 1 + s_id + 14×t_id + 14×80×f_id + 14×80×8×ul_carrier_id,

[0216] where s_id is the index of the first OFDM symbol of this PRACH occasion (0 ≤ s_id < 14), t_id is the index of the first time slot of this PRACH occasion in the 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 specified in Section 5.3.2 of TS 38.211, for μ = {5, 6}, t_id is the index of the 120 kHz time 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), and ul_carrier_id is the UL carrier used for random access preamble transmission (0 for NUL carrier, 1 for SUL carrier).

[0217] In the third step, the user sends the third message (Message 3, Msg3) to the base station according to the information in the RAR. Msg3 contains information such as the user terminal identifier and the RRC connection request. Among them, the user terminal identifier is unique to the user and is used to resolve conflicts. 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 the user detects its own identifier, it upgrades the temporary C-RNTI to C-RNTI and sends an ACK signal to the base station to complete the random access process and wait for the scheduling of the base station. Otherwise, the user will start a new random access process after a certain delay.

[0218] For the non-competitive random access process, since the base station knows the user identifier, it can allocate a preamble sequence for the user. Therefore, when the user sends the preamble sequence, it does not need to randomly select the sequence but will use the allocated preamble sequence. After the base station detects the allocated preamble sequence, it will send a corresponding random access response, including information such as timing advance and uplink resource allocation. After the user receives the random access response, it considers that the uplink synchronization has been completed and waits for the further scheduling of the base station. Therefore, the non-competitive random access process only includes two steps: Step 1 is to send the preamble sequence; Step 2 is to send the random access response.

[0219] For example, the random access process is applicable to the following scenarios:

[0220] 1. Initial access under RRC_IDLE;

[0221] 2. Re-establishing the RRC connection;

[0222] 3. Cell handover;

[0223] 4. Downlink data arrives in the RRC connected state and requests a random access process (when the uplink is asynchronous);

[0224] 5. Uplink data arrives in the RRC connected state and requests a random access process (when the uplink is asynchronous or no resource is allocated for the scheduling request in the PUCCH resource);

[0225] 6. Positioning.

[0226] To enhance the coverage of 5G wireless communication systems or reduce system latency, special duplexing methods are adopted in some communication systems. For example, in the TDD band (or rather, in unpaired spectrum), the cross-division duplex (XDD) method is used. Or, for another example, the subband non-overlapping full duplex (SBFD, or also referred to as "subband full duplex") method is adopted. Subband non-overlapping full duplex means that the bandwidth of the base station (e.g., carrier bandwidth) can be divided into more than one subband. Among them, the uplink-downlink ratio between the more than one subbands can be different. Such an effect is that the base station can flexibly change the uplink-downlink ratio of a part of the bandwidth, for example, allocate it as full uplink (or full downlink), or with a larger uplink ratio / a larger downlink ratio. Thereby, the opportunity for the UE to transmit uplink / downlink in the time domain is increased, thus enhancing the UE's uplink coverage ability or reducing latency. In such communication systems, how to combine the newly emerged uplink resources through subband non-overlapping full duplex for random access transmission is a problem to be solved. In addition, the present disclosure can also solve other problems related to SBFD systems, such as but not limited to: random access configuration in SBFD systems, random access resource determination, SSB to RO (SSB-RO) mapping, random access feedback reception, etc. Additionally, the present disclosure can also handle random access-related problems in systems where random access resources are configured for other features (e.g., network energy saving (NES)). And the problems that the present disclosure can solve are not limited to the problems mentioned above and in the following description, but can also solve all problems that can be actually solved according to the essence of the technology of the present disclosure.

[0227] In one embodiment of the present invention, a method and device for resource confirmation and signal transmission of random access will be introduced. This method is beneficial for the UE to be able to perform the random access process by combining newly configured random access resources in some scenarios. For example, when the UE is in a network system supporting SBFD and there are new random access resources on the SBFD symbols, and at the same time there are randomly configured random access resources in the traditional way (such as random access resources for four-step random access, etc.), how to perform random access in this case. This method can be extended or replaced with other duplexing methods, such as full duplex, etc., and can also be extended or replaced with other features, such as randomly configured random access resources in the case of network energy saving, etc. In the present disclosure, SBFD is used to elaborate the solution, but this is only exemplary and is for the convenience of the inventor to fully describe its technical concept and technical principle, rather than to limit the principle of the present disclosure to random access related to SBFD.

[0228] It can be understood that although most of the description in the present disclosure describes the solution in terms of random access related to SBFD, the principles disclosed in the present disclosure can equally be applied to scenarios where random access resources are configured for other features. For example, for a scenario where random access resources are separately configured for network energy saving (NES), the technology of the present disclosure can also be applicable. Therefore, the present disclosure can be applied at least to scenarios where random access resources are configured for specific features (such as SBFD, NES, etc.). For the sake of convenient description, the random access associated with a specific feature can be referred to as "second random access", the resources configured for the second random access can be referred to as "second type of random access resources" (for example, second type of RO), etc., the traditional random access can be referred to as "ordinary random access" or "first random access", etc., and its corresponding resources can be referred to as "ordinary random access resources" (for example, ordinary RO) or "first type of random access resources" (for example, first type of RO).

[0229] In the present invention, SSB is described as the downlink reference signal related to random access, but this is merely exemplary, and SSB can also be replaced by other reference signals, such as CSI-RS, PRS, etc.

[0230] The method provided by the present invention may include one or a combination of the following operations:

[0231] · The UE receives random access related configuration information sent by other nodes (such as network devices, which may include base stations, etc.). Related configuration information , where:

[0232] ■ The configuration information related to the random access includes one or a combination of the following:

[0233] ◆ The first type of random access configuration information, or the first configuration information related to normal random access, such as existing or pre - existing random access configuration information, such as the configuration information for four - step random access, the configuration information for two - step random access, etc.; In this invention, the configuration of four - step random access is taken as an example to illustrate the method, which can be extended or replaced with random access configurations for other features; Among them, the first type of random access configuration information at least includes a random access configuration index, the number of ROs in the random access frequency domain, the starting position of the first RO in the frequency domain, the root sequence index of the preamble, the number of preambles on one RO, the mapping ratio of SSB - RO (ssbperRO, such as the information of how many SSBs are mapped on one RO), etc.; In the description of this disclosure, the RO obtained based on the first type of random access configuration information is referred to as a normal RO, (normal RO); Specifically, the configured normal RO can be judged to obtain a valid normal RO according to the existing validity rules, which is referred to as a valid normal RO; Among them, the existing validity rules include: an RO on a random access time slot is in the uplink symbol (or uplink part) in the TDD configuration, then it is a valid RO; an RO on a random access time slot does not precede the SSB on this time slot and / or the RO is at least N symbols away from the last downlink symbol and / or the last SSB symbol on the current time slot, then it is a valid RO;

[0234] ◆ The second type of random access configuration information, or the second configuration information related to the second random access, the second random access is related to the second feature, the second feature is such as SBFD, NES, etc. but not limited to this. In the description of this article, for the convenience of expression and easy understanding, SBFD is taken as an example of the second feature for description. The second type of random access configuration information can also be referred to as, for example, new random access configuration information (or configuration information different from the existing random access configuration information), for example, new SBFD random access configuration information can be obtained through the configuration of SBFD. In this invention, the SBFD random access configuration information is used to illustrate the method, which can be extended to other random access configuration information; Among them, the second type of random access configuration information includes at least one of the following:

[0235] Configuration related to the time-domain resources of the SBFD UL subband, such as the configuration related to the SBFD symbols; for example, through this configuration, the UE can know the starting position of the SBFD symbols, the number of SBFD symbols, and the size of the time period within a time period. Preferably, it also includes the repetition period of the time period, which is expressed as the SBFD configuration period. The SBFD configuration period can be the same as the TDD pattern configuration period, or can be an integer multiple of the TDD pattern configuration period, and / or the same as the random access related period, or can be an integer multiple of the random access related period; the random access related period includes at least one of the following: random access configuration period, mapping loop of SSB-RO, mapping period of SSB-RO, mapping pattern period of SSB-RO; for example, a time period is a time slot (expressed as SBFD time slot), the starting position of the SBFD symbols starts from symbol 0 in a time slot, and the number of SBFD symbols is 6 symbols; if the SBFD configuration period is 10 ms, there is one SBFD time slot in 10 ms, and there are 6 SBFD symbols starting from symbol 0 in this SBFD time slot; it can be extended to that the repetition period is the same as the time period, and / or one repetition period contains multiple SBFD time slots, etc.; the SBFD symbols can be replaced by SBFD time units. Figure 5 Shows an example configuration diagram of SBFD.

[0236] Configuration related to the frequency-domain resources of the SBFD UL subband. For example, through this related configuration information, the UE can obtain the starting point of the configured SBFD UL subband in the frequency domain, the number of frequency-domain units occupied (for example, the bandwidth of the SBFD UL subband), and / or the end point in the frequency domain.

[0237] Optionally, the SBFD random access configuration information includes one or more of the following: - Separate SBFD random access configuration information, including one or more of the following:

[0238] √ SBFD-specific random access configuration index; this random access configuration index indicates one or more of the following: random access preamble format, random access configuration period, the number and position of random access frames in the random access configuration period, the index of subframes or time slots in a random access frame, the starting symbol position of the random access preamble in a subframe or time slot, the number of random access time slots in a random access subframe, the number of random access opportunities in a random access time slot, the number of OFDM symbols occupied in a random access opportunity;

[0239] √ Number of SBFD-specific random access frequency-domain ROs;

[0240] √The starting position of random access in the frequency domain dedicated to SBFD; for example, the starting position of the first RO of SBFD in the frequency domain, and the ROs in other frequency domains are calculated based on the position of the first RO, the frequency domain resources occupied by one RO, and / or the frequency domain interval between ROs;

[0241] √The root sequence index of the random access preamble dedicated to SBFD

[0242] √The number of random access preambles dedicated to SBFD; for example, the number of preambles dedicated to SBFD on one RO;

[0243] √The power-related configuration dedicated to SBFD, including at least one of the following: the target received power of the preamble dedicated to SBFD, the path loss compensation coefficient alpha dedicated to SBFD (for example, alpha × path loss, when alpha is less than 1, it indicates partial path loss compensation; when alpha = 1, it indicates full path loss compensation; when alpha > 1, it indicates excessive path loss compensation, and this scenario is beneficial for enabling the UE to obtain additional power increase when sending the preamble on the SBFD RO using the ordinary target received power); the power increase difference (delta value) dedicated to SBFD, the power ramping priority (priority) and / or step (step) dedicated to SBFD, etc.; when the UE uses the SBFD RO to send the preamble, the above power-related configuration dedicated to SBFD is used; the transmission power P is determined based on one or more of the target received power P0, alpha × path loss, delta, and power ramping step × number of retransmissions;

[0244] - Optionally, the SBFD random access configuration information shares the first type of random access configuration information. For example, the SBFD random access configuration information reuses the first type of random access configuration information. For example, the random access configuration index of SBFD is the same as the first type of random access configuration index, or;

[0245] ● The UE determines whether the configured random access opportunity is valid, including one or more of the following:

[0246] ■For the random access opportunity configured for SBFD (including when sharing the first type of random access configuration information dedicated to SBFD), expressed as SBFD RO, the following one or more validity judgments are used:

[0247] ◆The valid RO obtained by judging the SBFD RO according to the existing valid rules described in the above first type of random access configuration information, or the valid SBFD RO;

[0248] In another embodiment, when determining the validity of the SBFD RO that has time-domain overlap with the SSB, the UE obtains information on whether the SBFD RO that has time-domain overlap with the SSB is valid. This information can be obtained through explicit indication or implicit indication, and one of the following methods can be adopted:

[0249] - Explicit notification, for example, obtaining explicit indication information on whether the RO that has time-domain overlap with the SSB is valid, such as a 1-bit indication. "1" indicates that the SBFD RO that has time-domain overlap with the SSB is valid; "0" indicates that the SBFD RO that has time-domain overlap with the SSB is invalid. It can also be the opposite; "1" indicates that the SBFD RO that has time-domain overlap with the SSB is invalid; "0" indicates that the SBFD RO that has time-domain overlap with the SSB is valid;

[0250] - Implicit notification. The UE obtains information on whether the RO that has time-domain overlap with the SSB is valid through association in other configuration information. For example, the UE obtains configuration information on whether uplink transmission that has time-domain overlap with the SSB is allowed. When the UE determines that uplink transmission that has time-domain overlap with the SSB is allowed, the UE determines that the SBFD RO that has time-domain overlap with the SSB is valid; vice versa. When the UE determines that uplink transmission that has time-domain overlap with the SSB is not allowed, the UE determines that the SBFD RO that has time-domain overlap with the SSB is invalid;

[0251] ◆ When all symbols of an RO are completely within the SBFD symbols, the RO is a valid RO,

[0252] or a valid SBFD RO; for example, when some or all symbols of an RO are not within the SBFD symbols, the RO is an invalid RO or an invalid SBFD RO; ◆ When all symbols of an RO are on the SBFD symbols and flexible symbols, the RO is a valid RO or a valid SBFD RO; for example, when some or all symbols of an RO are not within the SBFD symbols or flexible symbols, the RO is an invalid RO or an invalid SBFD RO;

[0253] ◆ When the interval between the first symbol of an RO and the last SBFD symbol in a time slot is greater than (or not less than) a time unit interval threshold value, the RO is a valid RO; for example, when the interval between the starting position of the first symbol of an RO and the ending position of the last SBFD symbol in a time slot is not greater than (or less than) a time unit interval threshold value, the RO is an invalid RO or an invalid SBFD RO;

[0254] ◆ When a frequency domain unit of an RO is within the SBFD uplink subband (within SBFD UL subband), all frequency domain units including the RO are within the SBFD uplink subband, or at least one or X frequency domain units of an RO are within the SBFD uplink subband; the RO is a valid RO; or a valid SBFD RO; where X is an integer greater than 1

[0255] ◆ When an RO is not mapped to an SSB (or other downlink signal) within a certain time period, the RO is an invalid RO; the range of the certain time period includes the mapping loop, or mapping period, or mapping pattern period of the SSB-RO, the mapping loop, or mapping period, or mapping pattern period of the SSB-SBFD RO, or a time unit (such as a time slot), or a random access configuration period, or a TDD pattern configuration period, or a SBFD configuration period;

[0256] ● The UE maps the SSB to a valid SBFD random access opportunity, including one or more of the following:

[0257] ■ Obtain the mapping related information of the SSB-RO according to the first type of random access configuration information, including one or more of the following:

[0258] ◆ The mapping loop of the SSB-RO

[0259] ◆ The mapping period of the SSB-RO

[0260] ◆ The mapping pattern period of the SSB-RO

[0261] ■ Obtain the mapping related information of the SSB-SBFD RO according to the SBFD random access configuration information, including one or more of the following:

[0262] ◆ The mapping loop of the SSB-SBFD RO

[0263] ◆ The mapping period of the SSB-SBFD RO

[0264] ◆ The mapping pattern period of the SSB-SBFD RO

[0265] ■ Obtain the mapping of the SSB-SBFD RO according to the first type of random access configuration information and the SBFD random access configuration information, including one or more of the following:

[0266] ◆ According to the obtained mapping pattern period of the SSB-RO, the mapping ratio of the SSB-RO in the first type of random access configuration information, and the valid SBFD ROs in the mapping pattern period of the SSB-RO, map the SSB to the valid SBFD ROs in the mapping pattern period of the SSB-RO, such as Figure 6For example, in the first type of random access configuration, the mapping ratio of SSB to RO is 1:1. For example, one SSB is mapped to one RO. Currently, there are two SSBs (SSB0, 1). According to the SSB-RO mapping pattern period obtained from the first type of random access configuration information, there are two valid SBFD ROs. Then, according to the same mapping ratio, these two SSBs are correspondingly mapped to the two valid SBFD ROs;

[0267] ◆ According to the obtained mapping pattern period of SSB-RO and the mapping ratio of SSB-SBFD RO in the SBFD random access configuration information, and the valid SBFD ROs in the mapping pattern period of this SSB-RO, map the SSB to the valid SBFD ROs in the mapping pattern period of this SSB-RO;

[0268] ◆ According to the obtained mapping pattern period of SSB-RO and the valid SBFD ROs in the mapping pattern period of this SSB-RO, and the SSB-RO resource list configured by other nodes (network devices), each element in this list includes an SSB index and the index of the SBFD RO mapped by this SSB index, and the index of the SBFD RO is the logical index of the valid SBFD RO in the mapping pattern period of this SSB-RO;

[0269] ◆ When mapping a complete number of SSBs in the above mapping pattern period, if there are remaining SBFD ROs and / or preamble resources that cannot form a complete mapping loop or mapping period, the remaining SBFD ROs and preamble resources are invalid RO resources, and / or no SSB is mapped;

[0270] ◆ The above mapping pattern period can be replaced by a mapping period or a mapping loop, or other time units, such as one or more time slots; or one or more random access configuration periods, etc.; or a SBFD configuration period;

[0271] ● Based on the determined SBFD random access resources and / or the first type of random access resources, and the SSB selected or designated by the UE, the UE selects a random access opportunity and a preamble for transmission; The UE receives a UE-specific random access resource indication and transmits a random access preamble according to the received dedicated random access resources; the receiving of the UE-specific random access resource indication includes one or more of the following:

[0272] ● Figure 7 Figure 7

[0273] ■ The UE-specific random access resource indication obtained by the UE according to one or more of the following methods:

[0274] ◆ PDCCH command (such as PDCCH order)

[0275] ◆ MAC control element (MAC CE)

[0276] ◆ RRC high-layer signaling

[0277] ■ The UE-specific random access resource indication includes one or more of the following:

[0278] ◆ The SSB index, and the index of the RO (SBFD RO and / or type-1 RO) mapped to the SSB index;

[0279] Among them, the RO index mapped to the SSB index may include the index of the SBFD RO mapped to the SSB (for example, excluding type-1 RO), or the index of the type-1 RO mapped to the SSB (for example, excluding SBFD RO), or the common index of the SBFD RO and type-1 RO mapped to the SSB; and / or,

[0280] Among them, the index is obtained within a certain time period range, and the certain time period range includes the mapping loop of SSB-RO, or the mapping period, or the mapping pattern period, the mapping loop of SSB-SBFD RO, or the mapping period, or the mapping pattern period, or a time unit (such as a time slot), or a random access configuration period, or a TDD pattern configuration period, or a SBFD configuration period; and / or,

[0281] Among them, the RO index mapped to the SSB index can be one RO or multiple RO indexes, and can be an odd number or an even number of indexes;

[0282] ◆ RO index indication, for example, the SBFD RO and / or type-1 RO index within a certain time period range; among them,

[0283] The certain time period range includes

[0284] - Random access related periods, such as the mapping loop of SSB-RO, or the mapping period, or the mapping pattern period, the mapping loop of SSB-SBFD RO, or the mapping period, or the mapping pattern period, or a time unit (such as a time slot), or a random access configuration period, or

[0285] - A TDD pattern configuration period, or

[0286] - A SBFD configuration period; such as Figure 8 Example, taking the SSB-RO mapping pattern period as an example, Figure 8 shows an example diagram of the RO index within a certain time period range; and / or,

[0287] The RO index can be a time-domain only index; or a frequency-domain only index, or a time-frequency two-dimensional joint index;

[0288] Among them, the RO index can be

[0289] - the index of a single RO, or

[0290] - the indexes of N consecutive ROs, (N is a positive integer);

[0291] - the index of the first (for example, starting) RO among N consecutive ROs; the subsequent N - 1 ROs can be obtained sequentially;

[0292] Specifically, when the configuration period of SBFD does not match the certain time period (for example, the SBFD configuration period is different from the certain time period, for example, the SBFD period is greater than or less than the certain time period), there may be (more) SBFD ROs in some of the certain time periods, while there are no (or fewer) SBFD ROs in some other certain time periods. For example, the number of ROs (including ordinary ROs and / or SBFD ROs) included in one such certain time period may be different from the number of ROs included in another such certain time period; then

[0293] - the RO corresponding to the index of the RO is determined separately according to the number of ROs in each of the certain time periods. For example After transmitting the preamble, the UE needs to detect feedback information from other nodes (such as network devices). As an example, if the certain time period is 10 ms and the SBFD configuration period is 20 ms, there are a total of 4 ROs (two SBFD ROs and two ordinary ROs) in the certain time period 0, and 2 ROs (two ordinary ROs) in the certain time period 1. When the RO index is RO1, in the certain time period 0, it represents the second RO (the second SBFD RO), and in the certain time period 1, it represents the second RO (the second ordinary RO);

[0294] √ Specifically, when the range of the RO index exceeds the number of ROs in a certain time period, for example, when the RO index cannot directly find the corresponding RO, the UE can skip this certain time period, or find the corresponding RO in a cyclic manner; as Figure 9 As an example, when the RO index is RO2, in the certain time period 0, it represents the third RO (for example, the first ordinary RO); in the certain time period 1, there is no corresponding RO; the UE can skip the certain time period 1 and look for the certain time period with the RO corresponding to RO2 later; or cyclically index the ROs in the certain time period 1. For example, RO2 represents the first RO (also for example, the first ordinary RO) in the certain time period 1;

[0295] Dedicated preamble index; for example, a preamble index specifically configured to be sent to a UE;

[0296] Dedicated RNTI indication; for example, the RNTI received by the UE for searching and receiving feedback (such as PDCCH feedback, etc.) from other nodes (such as network devices);

[0297] Configuration of preamble transmission resources (including time-frequency resources and / or preamble resources and / or transmission power), including one or more of the following:

[0298] A time unit interval, for example, an interval value between a time unit where a configured preamble transmission resource (for example, an RO where the preamble is located) is located and a time unit where a downlink resource indicated by a UE-specific random access resource is received is located; for example, the time unit where the preamble transmission resource is located can be determined by using the interval and the time unit where the downlink resource indicated by the UE-specific random access resource is located;

[0299] In the time unit (e.g., time slot) where the preamble code transmission resource is located, the starting symbol of the RO sent by the preamble code can be indicated by an index value of a symbol in the time unit, or the number of symbol intervals between the starting symbol and the starting position of the time unit;

[0300] Random access preamble format index; indicates the format used by the configured preamble. The options for this format are predefined, and each option can obtain the number of time units and / or frequency domain units occupied by the preamble format;

[0301] The number of time units and / or frequency domain units occupied by an RO

[0302] The root sequence index of the preamble;

[0303] The length of the preamble, such as 839 or 139;

[0304] Preamble subcarrier spacing;

[0305] The period of the preamble sending resource

[0306] The content of the transmit power-related configuration may include one or more of the aforementioned SBFD-specific power-related configurations, which will not be repeated here;

[0307] ■ The RO can be replaced by a valid RO and / or a valid SBFD RO; or it can be a configured RO; where

[0308] ◆ When the configured RO is invalid, or there is a conflict with other downlink reception or uplink reception on the valid RO or the valid SBFD RO, the preamble transmission is cancelled; or the preamble transmission is postponed to the next available valid RO;

[0309] ● Figure 9 , specifically including one or more of the following:

[0310] ■ The UE uses the first RNTI to detect feedback information; the first RNTI includes one of the following:

[0311] ◆ The RA-RNTI, or SBFD RA-RNTI, calculated based on the RO used for preamble transmission; the calculation method of this RNTI can be:

[0312] Calculated based on the configured f_id; f_id is the logical index of a random access opportunity RO in the frequency domain; from the perspective of the entire network, there may be multiple random access resources on the entire bandwidth for different features; UEs that only support some features may only receive partial random access configurations; for example, UE1 supports the feature of message 3 repetition and obtains its corresponding random access configuration A; UE2 supports the feature of network slicing and obtains its corresponding random access configuration B; UE1 does not support the network slicing feature, so UE1 cannot determine random access configuration B; similarly, UE2 may also not be able to determine random access A; therefore, when calculating f_id, both UE1 and UE2 start from the first RO in the frequency domain of their respective random access configurations, for example, starting from f_id = 0; this will cause conflicts in the calculation of the RA-RNTI for different ROs in time; and the calculation based on the configured f_id provided by the present invention can enable the UE to avoid such conflicts, specifically including:

[0313] - The configured f_id is the f_id of the first RO in the frequency domain of the current random access resource configuration; the f_ids of the other ROs in the frequency domain of the current random access resource configuration are obtained by adding one in sequence, such as the first RO is f_id, the second RO is f_id + 1, the third RO is f_id + 2, and so on; or

[0314] - The configured f_id is the f_id of the last RO in the frequency domain of the current random access resource configuration; the f_ids of the other ROs in the frequency domain of the current random access resource configuration are obtained by subtracting one in sequence, such as the last RO is f_id, the penultimate RO is f_id - 1, the third-to-last RO is f_id - 2, and so on; or

[0315] - Configure f_id for all ROs in the frequency domain of the current random access configured resources; for example, if there are X ROs in the frequency domain of the current random access configured resources, the configured f_id is a set or list including X f_ids of X ROs; one f_id corresponds to one RO in the frequency domain.

[0316] - When f_id is not configured, by default, the f_id of the starting RO is a fixed value, such as 0 or other preset values.

[0317] - Preferably, when the random access configuration index of SBFD is the same as that of the first type of random access configuration, or the UE discovers that there are other ROs corresponding to other features in the time unit where the selected RO is located in frequency division multiplexing (FDM), the UE applies the configured f_id; otherwise, the UE applies the default f_id.

[0318] Calculate according to the feature index or feature group id, and the feature index or feature group index is obtained according to the logical index of one or more features or feature combinations configured by the network device for the random access configuration. For example, if the network device configures the random access for three features (such as message 3 repetition, network slice, SBFD), then the random access configuration corresponds to message 3 repetition feature_id = 0, network slice feature_id = 1; SBFD feature_id = 2; then RA-RNTI = 1 + s_id + 14×t_id + 14×80×f_id + 14×80×8×ul_carrier_id + 14×80×k×2×feature_id, where k is the maximum value of f_id, for example, k = 8.

[0319] Calculate according to the new s_id of the RO, where s_id is the index of the second symbol or the last symbol (for example, in the current time slot) of the RO.

[0320] ◆ C-RNTI. For example, after the UE accesses the network, the C-RNTI configured by the network device is used to search for the feedback of the network device.

[0321] ◆ The aforementioned dedicated RNTI. For example, on the dedicated random access resources configured by the UE to receive the network device, the dedicated RNTI configured is used to search for the feedback of the network device.

[0322] ■ The UE searches for feedback from the network device in a specified set of control resources (COREST) and / or search space. The specified set of control resources (COREST) and / or search space can be dedicated to SBFD UEs (e.g., for UEs that support SBFD); or dedicated to SBFD random access (e.g., for UEs that use SBFD RO for transmission).

[0323] ■ The UE searches for feedback from the network device in a specified search window, which is dedicated to SBFD UEs (e.g., for UEs that support SBFD); or dedicated to SBFD random access (e.g., for UEs that use SBFD RO for transmission). Specifically, it includes the start point of the time unit of the search window and / or the length of the time unit, etc.

[0324] Figure 10 The structural schematic diagram of a user equipment 900 according to at least one embodiment of the present disclosure is shown. Refer to Figure 10 This user equipment 900 includes a transceiver 901 and a controller 902. The transceiver 901 is configured to transmit data or signals and receive data or signals. The controller 902 is coupled to the transceiver 901 and is configured to perform control so that the user equipment 900 executes the method according to the embodiment of the present disclosure. In one implementation, the user equipment 900 may further include a memory (not shown), and computer-executable instructions are stored on the memory. When the instructions are executed by the controller 902, the user equipment 900 can execute at least one method corresponding to the above embodiments of the present disclosure.

[0325] ​ The structural schematic diagram of a network device (e.g., a base station) 1000 according to at least one embodiment of the present disclosure is shown. Refer to ​ This network device 1000 includes a transceiver 100 and a controller 1002. The transceiver 1001 is configured to transmit data or signals and receive data or signals. The controller 1002 is coupled to the transceiver 1001 and is configured to perform control so that the network device 1000 executes the method according to the embodiment of the present disclosure. In one implementation, the network device 1000 may further include a memory (not shown), and computer-executable instructions are stored on the memory. When the instructions are executed by the controller 1002, the network device 1000 can execute at least one method corresponding to the above embodiments of the present disclosure.

[0326] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0327] Those skilled in the art can understand that the present invention includes devices for performing one or more of the operations described in this application. These devices can be specially designed and manufactured for the required purposes, or they can also include known devices in general-purpose computers. These devices have computer programs stored therein, and these computer programs are selectively activated or reconstructed. Such computer programs can 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 the bus respectively. The computer readable medium includes, but is 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, the readable medium includes any medium that stores or transmits information in a form readable by a device (e.g., a computer).

[0328] Those skilled in the art can understand that each block in these structure diagrams and / or block diagrams and / or flowcharts, as well as combinations of the blocks in these structure diagrams and / or block diagrams and / or flowcharts, can be implemented using computer program instructions. Those skilled in the art can understand that these computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing methods to be implemented, so that the solutions specified in the blocks or multiple blocks of the structure diagrams and / or block diagrams and / or flowcharts disclosed in the present invention can be executed by the processor of the computer or other programmable data processing methods.

[0329] Those skilled in the art can understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in the present invention can be alternated, changed, combined, or deleted. Further, other steps, measures, and solutions in the various operations, methods, and processes discussed in the present invention can also be alternated, changed, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and solutions in the prior art that are the same as those in the various operations, methods, and processes disclosed in the present invention can also be alternated, changed, rearranged, decomposed, combined, or deleted.

[0330] The above are only some embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A method performed by a user equipment (UE) in a communication system, comprising: receiving configuration information for random access, the configuration information for random access including first configuration information related to normal random access and second configuration information related to second random access, the second random access being related to a second feature, the second configuration information including at least one of the following: configuration information of uplink (UL) subband resources related to the second feature, and information related to configuration of the second random access; Determining a valid random access opportunity (RO) among the random access opportunities (ROs) obtained based on the configuration information of the UL subband resource; Obtaining a mapping of at least one first downlink reference signal to the valid RO; Random access is performed using a first downlink reference signal selected from the at least one first downlink reference signal and a corresponding valid RO.

2. The method according to claim 1, wherein The second random access includes random access for sub-band full-duplex (SBFD), The sub-band resource configuration information includes time domain resource configuration and / or frequency domain resource configuration corresponding to the SBFD UL sub-band.

3. The method according to claim 1, wherein The information related to the configuration of the second random access includes at least one of the following: Configuration information for second random access; Indication of the configuration of shared normal random access.

4. The method according to claim 3, wherein: The configuration information for the second random access includes at least one of the following: A configuration index for a second random access; The number of frequency domain ROs used for the second random access; The frequency domain starting position of the RO for the second random access; A preamble root sequence index for a second random access; The number of preambles used for the second random access; A power-related configuration for the second random access.

5. The method according to claim 4, wherein The power-related configuration for the second feature includes at least one of the following: a path loss compensation coefficient related to the second feature, a preamble target received power, a power increase difference, a power climb priority and / or a step size related to the second feature.

6. The method according to claim 1, wherein The second random access includes random access for sub-band full-duplex (SBFD), and the valid RO includes at least one of the following: RO in the uplink portion of a time division duplex (TDD) configuration; No earlier than the RO of the first downlink reference signal corresponding to the timeslot; An RO whose distance from the last downlink symbol in the timeslot or the last symbol corresponding to the first downlink reference signal in the timeslot is greater than or equal to a first threshold value; All symbols are RO of SBFD symbols; All symbols are SBFD symbols or RO with flexible symbols; An interval between a first symbol and the last SBFD symbol in a time slot corresponding to the first symbol is not less than a second threshold value RO; At least one frequency domain unit or all frequency domain units are ROs in the SBFD uplink subband.

7. A method performed by a UE in a communication system, comprising: receiving configuration information of random access resources, where the random access resources include random access resources related to a second random access, where the second random access is related to a second feature; Perform random access using the random access resource, The configuration information of the random access resource includes at least one of the following: a first downlink reference signal index and an index of a mapped RO, where the mapped RO includes a second type of RO corresponding to the second random access and / or a first type of RO corresponding to the normal random access; The RO index indicates that the RO includes a second-category RO and / or a first-category RO; Dedicated preamble index; Dedicated RNTI; Preamble sending resource configuration.

8. The method according to claim 7, wherein: The second random access includes a random access for SBFD, The first downlink reference signal index, the index of the mapped RO, or the RO index corresponding to the RO index indication corresponds to a first time range, The first time range includes at least one of the following: A mapping loop of the first downlink reference signal-RO, a mapping period of the first downlink reference signal-RO, a mapping pattern period of the first downlink reference signal-RO, a mapping loop of the first downlink reference signal-SBFD RO, a mapping period of the first downlink reference signal-SBFD RO, a mapping pattern period of the first downlink reference signal-SBFD RO, a predetermined number of time units, a random access configuration period, a TDD pattern configuration period, and an SBFD configuration period.

9. The method according to claim 8, wherein If the SBFD configuration period is different from the first time range, the RO indicated by the RO index indication is determined based on the number of ROs in the first time range.

10. The method according to claim 9, wherein: If the RO index corresponding to the RO index indication is greater than or equal to the number of ROs in the first time range, the RO corresponding to the RO index indication is determined in the first time range in a round-robin manner.

11. The method according to claim 7, wherein: The preamble sending resource configuration includes at least one of the following: A time unit interval, used to indicate the interval between the time when the preamble code is sent and the time when the random access resource indication is received; The starting symbol of RO; Preamble format index; The number of time domain and / or frequency domain resources occupied by the RO; Preamble root sequence index; Preamble length; Preamble subcarrier spacing; Preamble sending resource period.

12. The method according to any one of claims 9 to 11, wherein: If the RO determined based on the configuration information of the random access resource conflicts with other transmissions, the preamble on the RO is canceled.

13. A method performed by a base station in a communication system, comprising: sending configuration information for random access, the configuration information for random access including first configuration information related to normal random access and second configuration information related to second random access, where the second random access is related to the second feature, and the second configuration information including at least one of the following: configuration information of uplink UL subband resources related to the second feature, and information related to configuration of the second random access; Receive a random access signal sent by the UE, The random access signal is sent by the UE using a first downlink reference signal selected from at least one first downlink reference signal and a corresponding valid RO, The corresponding valid RO is a valid RO in the random access opportunity RO obtained based on the configuration information of the UL subband resource. The at least one first downlink reference signal is mapped to the valid RO.

14. A UE in a communication system, comprising: a transceiver configured to transmit and / or receive signals; A controller is configured to control the UE to execute the method according to any one of claims 1-12.

15. A base station in a communication system, comprising: a transceiver configured to transmit and / or receive signals; A controller is configured to control the base station to perform the method according to claim 13.

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