Communication method, terminal device and base station

Abstract

Provided are a communication method, a terminal device and a base station, the method comprising: acquiring configuration information related to random access from the base station, the configuration information comprising a first offset; resources related to the random access are determined according to the configuration information and a time domain reference point related to the random access, and the time domain reference point is a time domain position related to a downlink channel and / or a downlink signal; and transmitting a random access signal based on the resource. Namely, in the embodiment of the invention, the resource related to the random access is determined by combining the first offset and the time domain position related to the downlink channel and / or the downlink signal, so that the random access in an asynchronous system can be realized, and the method and the device can be applied to terminal equipment such as A-IoT and / or P-IoT.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication technologies, and in particular to a communication method, a terminal device, and a base station. 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, technologies such as beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antennas are being discussed in 5G communication systems.

[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) 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 have been developed.

[0006] In some specialized wireless communication scenarios, such as the Internet of Things (IoT), ambient-powered IoT (A-IoT) devices and passive IoT (P-IoT) devices have been proposed to achieve wireless communications with lower hardware complexity and lower power consumption. However, determining the resources used for random access by A-IoT or P-IoT devices in wireless communications remains a challenge. Summary of the Invention

[0007] The purpose of the embodiments of the present disclosure is to solve the problem of how an A-IoT or P-IoT terminal device determines resources for random access.

[0008] According to one aspect of an embodiment of the present disclosure, a method performed by a terminal device in a communication system is provided, the method including:

[0009] Acquire configuration information related to random access from a base station, where the configuration information includes a first offset;

[0010] Determining resources related to random access according to the configuration information and a time domain reference point related to random access, where the time domain reference point is a time domain position related to a downlink channel and / or a downlink signal;

[0011] Based on the resources, a random access signal is sent.

[0012] In an optional implementation manner, the time domain reference point includes at least one of the following:

[0013] The time domain starting position of the synchronization signal;

[0014] The time domain end position of the synchronization signal;

[0015] The time domain starting position of the downlink signal and / or downlink channel carrying the configuration information;

[0016] The time domain end position of the downlink signal and / or downlink channel carrying configuration information.

[0017] In an optional implementation manner, the first offset is a time domain offset between a time domain reference point and a time domain start or end position of a resource related to random access.

[0018] In an optional implementation, the configuration information further includes a second offset, wherein:

[0019] The second offset is the time interval between two adjacent random access-related resources in the time domain; or,

[0020] The second offset is the time domain offset between the time domain starting position of the i-th random access-related resource and the time domain starting position of the first random access-related resource;

[0021] The first resource related to random access is a resource related to random access determined based on the first offset and the time domain reference point, and i is an integer greater than 1.

[0022] In an optional implementation, the configuration information further includes:

[0023] The number M of time domain resources related to random access.

[0024] In an optional implementation, the configuration information further includes a third offset, wherein:

[0025] The third offset is a time domain offset between a start position of a period related to random access or synchronization and a time domain start or end position of a resource related to random access;

[0026] The first offset is a time domain offset between a time domain reference point and a start position of a cycle related to random access or synchronization.

[0027] In an optional implementation, the configuration information further includes a fourth offset, wherein:

[0028] The fourth offset is the time interval between two adjacent random access-related resources in the time domain within the same period; or,

[0029] The fourth offset is the time domain offset between the time domain starting position of the jth random access-related resource and the time domain starting position of the first random access-related resource or the period starting position of the period in the same period;

[0030] The first resource related to random access is a resource related to random access determined based on the third offset and the time domain starting position of the cycle, and j is an integer greater than 1.

[0031] In an optional implementation, the configuration information further includes:

[0032] The number N of time domain resources related to random access in the same period.

[0033] In an optional implementation manner, the resources related to the random access are further determined based on a frequency domain reference point related to the random access, wherein the frequency domain reference point is a frequency domain starting position corresponding to the ARFCN.

[0034] In an optional implementation manner, the frequency domain reference point further includes at least one of the following:

[0035] Absolute frequency;

[0036] The frequency domain starting position of the uplink active bandwidth part BWP physical resource block PRB0;

[0037] The frequency domain end position of the 10th PRB of the synchronization signal block SSB;

[0038] The uplink frequency domain starting position of the channel grid operating band;

[0039] The center frequency domain position of the channel grid operating band;

[0040] A starting position of a channel grid operating frequency band determined according to a channel grid operating frequency band in which a downlink signal and / or a downlink channel is located;

[0041] The frequency domain starting position of the global synchronization channel number GSCN;

[0042] An uplink frequency domain reference point determined based on the frequency domain starting position and frequency domain offset of the downlink signal and / or downlink channel;

[0043] An uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel;

[0044] Frequency domain starting position used for uplink carrier transmission.

[0045] In an optional implementation, the configuration information further includes a fifth offset, where the fifth offset is a frequency domain offset between the frequency domain reference point and a frequency domain start or end position of resources related to random access.

[0046] In an optional implementation, the configuration information further includes a sixth offset, wherein:

[0047] The sixth offset is a frequency domain interval between two adjacent random access-related resources in the frequency domain; or,

[0048] The sixth offset is a frequency domain offset between a frequency domain starting position of the kth random access-related resource and a frequency domain starting position of the first random access-related resource;

[0049] The first resource related to random access is a resource related to random access determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1.

[0050] In an optional implementation, the configuration information further includes:

[0051] The number of frequency domain resources X related to random access.

[0052] In an optional implementation, the configuration information further includes at least one of the following:

[0053] The total number of sequences associated with random access;

[0054] Sequence length associated with random access;

[0055] Sequence index related to random access.

[0056] In an optional embodiment, the method further includes:

[0057] A random access-related sequence having a sequence length is generated based on the International Mobile Subscriber Identity (IMSI).

[0058] In an optional implementation, the configuration information further includes:

[0059] Information about known terminal devices;

[0060] The known terminal device information includes at least one of the following:

[0061] Terminal device index;

[0062] Index of resources;

[0063] Sequence index.

[0064] In an optional embodiment, the resource index is to number the first time domain resource for each frequency domain resource, and to number other time domain resources in the same manner, wherein the resource index skips the numbering of the resources corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0065] In an optional embodiment, if the capability of the terminal device includes supporting frequency division multiplexing, the resources related to random access are mapped in the ascending order of the frequency domain resource index of the frequency division multiplexing, and then mapped in the ascending order of the time domain resource index; and / or,

[0066] The terminal device does not include capabilities, and the resources related to random access are mapped in the increasing order of time domain resource index.

[0067] According to another aspect of an embodiment of the present disclosure, there is provided another method performed by a terminal device in a communication system, the method comprising:

[0068] Obtaining configuration information related to random access from the base station, the configuration information including a fifth offset, where the fifth offset is a frequency domain offset between a frequency domain reference point and a frequency domain start or end position of resources related to the random access, where the frequency domain reference point is a frequency domain start position corresponding to the ARFCN;

[0069] Determine resources related to random access based on configuration information and frequency domain reference points;

[0070] Based on the resources, a random access signal is sent.

[0071] In an optional implementation manner, the frequency domain reference point further includes at least one of the following:

[0072] Absolute frequency;

[0073] The frequency domain starting position of the uplink active bandwidth part BWP physical resource block PRB0;

[0074] The frequency domain end position of the 10th PRB of the synchronization signal block SSB;

[0075] The uplink frequency domain starting position of the channel grid operating band;

[0076] The center frequency domain position of the channel grid operating band;

[0077] A starting position of a channel grid operating frequency band determined according to a channel grid operating frequency band in which a downlink signal and / or a downlink channel is located;

[0078] The frequency domain starting position of the global synchronization channel number GSCN;

[0079] An uplink frequency domain reference point determined based on the frequency domain starting position and frequency domain offset of the downlink signal and / or downlink channel;

[0080] An uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel;

[0081] Frequency domain starting position used for uplink carrier transmission.

[0082] In an optional implementation manner, the fifth offset is a frequency domain offset between a frequency domain reference point and a frequency domain start or end position of resources related to random access.

[0083] In an optional implementation, the configuration information further includes a sixth offset, wherein:

[0084] The sixth offset is a frequency domain interval between two adjacent random access-related resources in the frequency domain; or,

[0085] The sixth offset is a frequency domain offset between a frequency domain starting position of the kth random access-related resource and a frequency domain starting position of the first random access-related resource;

[0086] The first resource related to random access is a resource related to random access determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1.

[0087] In an optional implementation, the configuration information further includes:

[0088] The number of frequency domain resources X related to random access.

[0089] In an optional implementation, the configuration information further includes at least one of the following:

[0090] The total number of sequences associated with random access;

[0091] Sequence length associated with random access;

[0092] Sequence index related to random access.

[0093] In an optional embodiment, the method further includes:

[0094] A random access-related sequence having a sequence length is generated based on the International Mobile Subscriber Identity (IMSI).

[0095] In an optional implementation, the configuration information further includes:

[0096] Information about known terminal devices;

[0097] The known terminal device information includes at least one of the following:

[0098] Terminal device index;

[0099] Index of resources;

[0100] Sequence index.

[0101] In an optional embodiment, the resource index is to number the first time domain resource for each frequency domain resource, and to number other time domain resources in the same manner, wherein the resource index skips the numbering of the resources corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0102] In an optional embodiment, if the capability of the terminal device includes supporting frequency division multiplexing, the resources related to random access are mapped in the ascending order of the frequency domain resource index of the frequency division multiplexing, and then mapped in the ascending order of the time domain resource index; and / or,

[0103] The terminal device does not include capabilities, and the resources related to random access are mapped in the increasing order of time domain resource index.

[0104] According to another aspect of an embodiment of the present disclosure, a method performed by a base station in a communication system is provided, the method including:

[0105] Sending configuration information related to random access to the terminal device, where the configuration information includes a first offset;

[0106] A random access signal is received from a terminal device, wherein a transmission resource of the random access signal is determined based on configuration information and a time domain reference point related to the random access, and the time domain reference point is a time domain position related to a downlink channel and / or a downlink signal.

[0107] In an optional implementation manner, the time domain reference point includes at least one of the following:

[0108] The time domain starting position of the synchronization signal;

[0109] The time domain end position of the synchronization signal;

[0110] The time domain starting position of the downlink signal and / or downlink channel carrying the configuration information;

[0111] The time domain end position of the downlink signal and / or downlink channel carrying configuration information.

[0112] In an optional implementation manner, the first offset is a time domain offset between a time domain reference point and a time domain start or end position of a resource related to random access.

[0113] In an optional implementation, the configuration information further includes a second offset, wherein:

[0114] The second offset is the time interval between two adjacent random access-related resources in the time domain; or,

[0115] The second offset is the time domain offset between the time domain starting position of the i-th random access-related resource and the time domain starting position of the first random access-related resource;

[0116] The first resource related to random access is a resource related to random access determined based on the first offset and the time domain reference point, and i is an integer greater than 1.

[0117] In an optional implementation, the configuration information further includes:

[0118] The number M of time domain resources related to random access.

[0119] In an optional implementation, the configuration information further includes a third offset, wherein:

[0120] The third offset is a time domain offset between a start position of a period related to random access or synchronization and a time domain start or end position of a resource related to random access;

[0121] The first offset is a time domain offset between a time domain reference point and a start position of a cycle related to random access or synchronization.

[0122] In an optional implementation, the configuration information further includes a fourth offset, wherein:

[0123] The fourth offset is the time interval between two adjacent random access-related resources in the time domain within the same period; or,

[0124] The fourth offset is the time domain offset between the time domain starting position of the jth random access-related resource and the time domain starting position of the first random access-related resource or the period starting position of the period in the same period;

[0125] The first resource related to random access is a resource related to random access determined based on the third offset and the time domain starting position of the cycle, and j is an integer greater than 1.

[0126] In an optional implementation, the configuration information further includes:

[0127] The number N of time domain resources related to random access in the same period.

[0128] In an optional implementation manner, the resources related to the random access are further determined based on a frequency domain reference point related to the random access, wherein the frequency domain reference point is a frequency domain starting position corresponding to the ARFCN.

[0129] In an optional implementation manner, the frequency domain reference point further includes at least one of the following:

[0130] Absolute frequency;

[0131] The frequency domain starting position of the uplink active bandwidth part BWP physical resource block PRB0;

[0132] The frequency domain end position of the 10th PRB of the synchronization signal block SSB;

[0133] The uplink frequency domain starting position of the channel grid operating band;

[0134] The center frequency domain position of the channel grid operating band;

[0135] A starting position of a channel grid operating frequency band determined according to a channel grid operating frequency band in which a downlink signal and / or a downlink channel is located;

[0136] The frequency domain starting position of the global synchronization channel number GSCN;

[0137] An uplink frequency domain reference point determined based on the frequency domain starting position and frequency domain offset of the downlink signal and / or downlink channel;

[0138] An uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel;

[0139] Frequency domain starting position used for uplink carrier transmission.

[0140] In an optional implementation, the configuration information further includes a fifth offset, where the fifth offset is a frequency domain offset between the frequency domain reference point and a frequency domain start or end position of resources related to random access.

[0141] In an optional implementation, the configuration information further includes a sixth offset, wherein:

[0142] The sixth offset is a frequency domain interval between two adjacent random access-related resources in the frequency domain; or,

[0143] The sixth offset is a frequency domain offset between a frequency domain starting position of the kth random access-related resource and a frequency domain starting position of the first random access-related resource;

[0144] The first resource related to random access is a resource related to random access determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1.

[0145] In an optional implementation, the configuration information further includes:

[0146] The number of frequency domain resources X related to random access.

[0147] In an optional implementation, the configuration information further includes at least one of the following:

[0148] The total number of sequences associated with random access;

[0149] Sequence length associated with random access;

[0150] Sequence index related to random access.

[0151] In an optional implementation manner, the sequence length related to random access is generated by the terminal device based on the International Mobile Subscriber Identity IMSI.

[0152] In an optional implementation, the configuration information further includes:

[0153] Information about known terminal devices;

[0154] The known terminal device information includes at least one of the following:

[0155] Terminal device index;

[0156] Index of resources;

[0157] Sequence index.

[0158] In an optional embodiment, the resource index is to number the first time domain resource for each frequency domain resource, and to number other time domain resources in the same manner, wherein the resource index skips the numbering of the resources corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0159] In an optional embodiment, if the capability of the terminal device includes supporting frequency division multiplexing, the resources related to random access are mapped in the ascending order of the frequency domain resource index of the frequency division multiplexing, and then mapped in the ascending order of the time domain resource index; and / or,

[0160] The terminal device does not include capabilities, and the resources related to random access are mapped in the increasing order of time domain resource index.

[0161] According to another aspect of the embodiments of the present disclosure, a method performed by a base station in a communication system is provided, the method including:

[0162] Sending configuration information related to random access to the terminal device, the configuration information including a fifth offset, wherein the fifth offset is a frequency domain offset between a frequency domain reference point and a frequency domain start or end position of a resource related to random access, and the frequency domain reference point is a frequency domain start position corresponding to the ARFCN;

[0163] A random access signal sent by a receiving terminal device is received, wherein a sending resource of the random access signal is determined based on configuration information and a frequency domain reference point.

[0164] In an optional implementation manner, the frequency domain reference point further includes at least one of the following:

[0165] Absolute frequency;

[0166] The frequency domain starting position of the uplink active bandwidth part BWP physical resource block PRB0;

[0167] The frequency domain end position of the 10th PRB of the synchronization signal block SSB;

[0168] The uplink frequency domain starting position of the channel grid operating band;

[0169] The center frequency domain position of the channel grid operating band;

[0170] A starting position of a channel grid operating frequency band determined according to a channel grid operating frequency band in which a downlink signal and / or a downlink channel is located;

[0171] The frequency domain starting position of the global synchronization channel number GSCN;

[0172] An uplink frequency domain reference point determined based on the frequency domain starting position and frequency domain offset of the downlink signal and / or downlink channel;

[0173] An uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel;

[0174] Frequency domain starting position used for uplink carrier transmission.

[0175] In an optional implementation manner, the fifth offset is a frequency domain offset between a frequency domain reference point and a frequency domain start or end position of resources related to random access.

[0176] In an optional implementation, the configuration information further includes a sixth offset, wherein:

[0177] The sixth offset is a frequency domain interval between two adjacent random access-related resources in the frequency domain; or,

[0178] The sixth offset is a frequency domain offset between a frequency domain starting position of the kth random access-related resource and a frequency domain starting position of the first random access-related resource;

[0179] The first resource related to random access is a resource related to random access determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1.

[0180] In an optional implementation, the configuration information further includes:

[0181] The number of frequency domain resources X related to random access.

[0182] In an optional implementation, the configuration information further includes at least one of the following:

[0183] The total number of sequences associated with random access;

[0184] Sequence length associated with random access;

[0185] Sequence index related to random access.

[0186] In an optional implementation manner, the sequence length related to random access is generated by the terminal device based on the International Mobile Subscriber Identity IMSI.

[0187] In an optional implementation, the configuration information further includes:

[0188] Information about known terminal devices;

[0189] The known terminal device information includes at least one of the following:

[0190] Terminal device index;

[0191] Index of resources;

[0192] Sequence index.

[0193] In an optional embodiment, the resource index is to number the first time domain resource for each frequency domain resource, and to number other time domain resources in the same manner, wherein the resource index skips the numbering of the resources corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0194] In an optional embodiment, if the capability of the terminal device includes supporting frequency division multiplexing, the resources related to random access are mapped in the ascending order of the frequency domain resource index of the frequency division multiplexing, and then mapped in the ascending order of the time domain resource index; and / or,

[0195] The terminal device does not include capabilities, and the resources related to random access are mapped in the increasing order of time domain resource index.

[0196] According to another aspect of an embodiment of the present disclosure, a terminal device is provided, which includes: a transceiver and a processor, wherein the processor is coupled to the transceiver and configured to execute the method executed by the terminal device in the communication system provided by the embodiment of the present disclosure.

[0197] According to another aspect of an embodiment of the present disclosure, a base station is provided, which includes: a transceiver and a processor, wherein the processor is coupled to the transceiver and configured to execute the method executed by the base station in the communication system provided by the embodiment of the present disclosure.

[0198] According to another aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method performed by a terminal device in the communication system provided by the embodiment of the present disclosure is implemented.

[0199] According to another aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method performed by the base station in the communication system provided by the embodiment of the present disclosure is implemented.

[0200] According to another aspect of an embodiment of the present disclosure, a computer program product is provided, including a computer program, which, when executed by a processor, implements the method performed by a terminal device in the communication system provided by the embodiment of the present disclosure.

[0201] According to another aspect of an embodiment of the present disclosure, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method performed by a base station in the communication system provided by the embodiment of the present disclosure is implemented.

[0202] The communication method, terminal device and base station provided by the embodiments of the present disclosure obtain configuration information related to random access from the base station, where the configuration information includes a first offset; determine resources related to random access based on the configuration information and a time domain reference point related to random access, where the time domain reference point is a time domain position related to a downlink channel and / or a downlink signal; and send a random access signal based on the resources. That is, in the embodiments of the present disclosure, the resources related to random access are determined in combination with the first offset and the time domain position related to the downlink channel and / or the downlink signal, which can realize random access in an asynchronous system and can be applied to terminal devices such as A-IoT and / or P-IoT. BRIEF DESCRIPTION OF THE DRAWINGS

[0203] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for describing the embodiments of the present disclosure.

[0204] Figure 1 A schematic diagram of the overall structure of a wireless network provided by an embodiment of the present disclosure;

[0205] Figure 2a A schematic diagram of a transmission path provided in an embodiment of the present disclosure;

[0206] Figure 2b A schematic diagram of a receiving path provided in an embodiment of the present disclosure;

[0207] Figure 3a A schematic diagram of the structure of a UE provided in an embodiment of the present disclosure;

[0208] Figure 3b A schematic diagram of the structure of a base station provided in an embodiment of the present disclosure;

[0209] Figure 4 A schematic diagram of a method executed by a terminal device in a communication system provided by an embodiment of the present disclosure;

[0210] Figure 5 A schematic diagram of determining a random access time domain resource based on a downlink signal and / or a downlink channel provided by an embodiment of the present disclosure;

[0211] Figure 6 A schematic diagram of determining a group of random access time-frequency resources based on a downlink signal and / or a downlink channel provided by an embodiment of the present disclosure;

[0212] Figure 7 A schematic diagram of determining a set of periodic random access time-frequency resources based on a downlink signal and / or a downlink channel provided by an embodiment of the present disclosure;

[0213] Figure 8 A schematic diagram of determining multiple groups of periodic random access time-frequency resources based on downlink signals and / or downlink channels provided by an embodiment of the present disclosure;

[0214] Figure 9 A schematic diagram of known terminal device information provided in an embodiment of the present disclosure;

[0215] Figure 10 A schematic diagram of another known terminal device information provided in an embodiment of the present disclosure;

[0216] Figure 11 A schematic diagram of a method executed by a terminal device in another communication system provided by an embodiment of the present disclosure;

[0217] Figure 12 A schematic diagram of a method performed by a base station in a communication system provided by an embodiment of the present disclosure;

[0218] Figure 13 A schematic diagram of a method performed by a base station in another communication system provided by an embodiment of the present disclosure;

[0219] Figure 14 A schematic structural diagram of an electronic device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0220] The following description, with reference to the accompanying drawings, is provided to facilitate a comprehensive understanding of the various embodiments of the present disclosure as defined by the claims and their equivalents. This description includes various specific details to facilitate understanding but should be considered as illustrative only. Therefore, one 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. Furthermore, descriptions of well-known functions and structures may be omitted for the sake of clarity and conciseness.

[0221] The terms and expressions used in the following description and claims are not limited to their dictionary meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Therefore, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purposes only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0222] It will be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.

[0223] The terms "include" or "may include" refer to the presence of the corresponding disclosed functions, operations, or components that can be used in various embodiments of the present disclosure, rather than limiting the presence of one or more additional functions, operations, or features. In addition, the terms "include" or "have" can be interpreted as indicating certain characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof, but should not be interpreted as excluding the possibility of the presence of one or more other characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0224] The term "or" used in various embodiments of the present disclosure includes any of the listed terms and all combinations thereof. For example, "A or B" may include A, may include B, or may include both A and B.

[0225] Unless otherwise defined, all terms (including technical or scientific terms) used in this disclosure have the same meaning as understood by those skilled in the art of the present disclosure. Common terms as defined in dictionaries are interpreted as having a meaning consistent with the context in the relevant technical field and should not be interpreted in an idealized or overly formal manner unless explicitly defined in this disclosure.

[0226] Figure 1 An example wireless network 100 is shown in accordance with various embodiments of the present disclosure. Figure 1 The embodiment of the wireless network 100 shown in FIGURE 1 is for illustration only. Other embodiments of the wireless network 100 can be used without departing from the scope of this disclosure.

[0227] 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 private IP network, or other data network.

[0228] Depending on the network type, other well-known terms such as "base station" or "access point" can be used instead of "gNodeB" or "gNB." For convenience, the terms "gNodeB" and "gNB" are used in this patent document to refer to network infrastructure components that provide wireless access to remote terminals. Also, depending on the network type, other well-known terms such as "mobile station," "subscriber station," "remote terminal," "wireless terminal," or "user device" can be used instead of "user equipment" or "UE." For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to a remote wireless device that wirelessly accesses a gNB, whether the UE is a mobile device (such as a mobile phone or smartphone) or what is typically considered a stationary device (such as a desktop computer or vending machine).

[0229] gNB 102 provides wireless broadband access to network 130 for multiple first user equipment (UEs) within gNB 102's coverage area 120. The multiple first UEs include: UE 111, which may be located in a small business (SB); UE 112, which may be located in an enterprise (E); UE 113, which may be located in a WiFi hotspot (HS); UE 114, which may be located in a first residence (R); UE 115, which may be located in a second residence (R); and UE 116, which may be a mobile device (M) such as a cellular phone, wireless laptop, or wireless PDA. gNB 103 provides wireless broadband access to network 130 for multiple second UEs within gNB 103's coverage area 125. The multiple second UEs include UE 115 and UE 116. In some embodiments, one or more of gNBs 101-103 can communicate with each other and with UEs 111-116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX, or other advanced wireless communication technologies.

[0230] The dashed lines illustrate the approximate extents of coverage areas 120 and 125, which are shown as approximately circular for purposes of illustration and explanation only. It should be clearly understood that coverage areas associated with gNBs, such as coverage areas 120 and 125, can have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0231] 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 supports codebook design and structure for systems with 2D antenna arrays.

[0232] although Figure 1 One example of a wireless network 100 is shown, but Figure 1 Various changes may be made. For example, wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement. Furthermore, gNB 101 can communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 can communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. Furthermore, gNBs 101, 102, and / or 103 can provide access to other or additional external networks, such as an external telephone network or other type of data network.

[0233] Figure 2a and Figure 2b Example wireless transmit and receive paths according to the present disclosure are shown. In the following description, transmit path 200 can be described as being implemented in a gNB (such as gNB 102), while receive path 250 can be described as being implemented in a UE (such as UE 116). However, it should be understood that receive path 250 can be implemented in a gNB and transmit path 200 can be implemented in a UE. In some embodiments, receive path 250 is configured to support codebook design and structure for systems with 2D antenna arrays as described in embodiments of the present disclosure.

[0234] 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, an add cyclic prefix block 225, and an upconverter (UC) 230. The receive path 250 includes a downconverter (DC) 255, a remove cyclic prefix 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.

[0235] 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 (e.g., 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 the 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 (e.g., multiplexes) the parallel time-domain output symbols from the N-point IFFT block 215 to generate a serial time-domain signal. The add cyclic prefix block 225 inserts a cyclic prefix into the time-domain signal. The upconverter 230 modulates (such as upconverts) the output of the add cyclic prefix block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at baseband before being converted to an RF frequency.

[0236] The RF signal transmitted from gNB 102 arrives at UE 116 after traversing the wireless channel. UE 116 performs operations that are the inverse of those performed at gNB 102. Downconverter 255 downconverts the received signal to baseband frequency, and cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 265 converts the time-domain baseband signal into parallel time-domain signals. N-point FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. Parallel-to-serial block 275 converts the parallel frequency-domain signals into a sequence of modulated data symbols. Channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0237] Each of gNBs 101-103 may implement a transmit path similar to 200 for transmitting in the downlink to UEs 111-116 and may implement a receive path similar to 250 for receiving in the uplink from UEs 111-116. Similarly, each of UEs 111-116 may implement a transmit path 200 for transmitting in the uplink to gNB 101-103 and may implement a receive path 250 for receiving in the downlink from gNB 101-103.

[0238] Figure 2a and Figure 2b Each of the components in can be implemented using hardware alone, or a combination of hardware and software / firmware. As a specific example, Figure 2a and Figure 2b At least some of the components in the embodiment may be implemented in software, while other components may be implemented in configurable hardware or a mixture of software and configurable hardware. For example, FFT block 270 and IFFT block 215 may be implemented as configurable software algorithms, wherein the value of the number of points N may be modified according to the implementation.

[0239] Furthermore, although described as using FFT and IFFT, this is illustrative only and should not be construed as limiting the scope of the present disclosure. Other types of transforms can be used, such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions. It should be understood that for DFT and IDFT functions, the value of the variable N can be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of the variable N can be any integer that is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0240] although Figure 2a and Figure 2b Examples of wireless transmit and receive paths are shown, but Figure 2a and Figure 2b Make various changes. For example, Figure 2a and Figure 2b The various components in can be combined, further subdivided, or omitted, and additional components can be added according to specific needs. Figure 2a and Figure 2b It is intended to illustrate 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 communications in a wireless network.

[0241] Figure 3a An example UE 116 is shown in accordance with the present disclosure. Figure 3a The embodiment of UE 116 shown in FIGURE 1 is for illustration only, and Figure 1UEs 111-115 can have the same or similar configurations. However, UEs have a variety of configurations, and Figure 3a The scope of this disclosure is not limited to any particular implementation of the UE.

[0242] UE 116 includes an antenna 305, a radio frequency (RF) transceiver 310, transmit (TX) processing circuitry 315, a microphone 320, and receive (RX) processing circuitry 325. UE 116 also includes a speaker 330, a processor / controller 340, an input / output (I / O) interface (IF) 345, input device(s) 350, a display 355, and a memory 360. Memory 360 includes an operating system (OS) 361 and one or more applications 362.

[0243] RF transceiver 310 receives incoming RF signals from antenna 305, transmitted by a gNB of wireless network 100. RF transceiver 310 downconverts the incoming RF signals to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is sent to RX processing circuitry 325, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 325 sends the processed baseband signal to speaker 330 (such as for voice data) or to processor / controller 340 (such as for web browsing data) for further processing.

[0244] The TX processing circuit 315 receives analog or digital voice data from the microphone 320, or other outgoing baseband data (such as network data, email, or interactive video game data) from the processor / controller 340. The TX processing circuit 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 310 receives the outgoing processed baseband or IF signal from the TX processing circuit 315 and up-converts the baseband or IF signal to an RF signal that is transmitted via the antenna 305.

[0245] The processor / controller 340 can include one or more processors or other processing devices and execute an OS 361 stored in the memory 360 to control the overall operation of the UE 116. For example, the processor / controller 340 can control the reception of forward channel signals and the transmission of reverse channel signals through the RF transceiver 310, the RX processing circuitry 325, and the TX processing circuitry 315 in accordance with well-known principles. In some embodiments, the processor / controller 340 includes at least one microprocessor or microcontroller.

[0246] Processor / controller 340 is also capable of executing other processes and programs residing in memory 360, such as operations for channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the present disclosure. Processor / controller 340 is capable of moving data into or out of memory 360 as required by the executed processes. In some embodiments, processor / controller 340 is configured to execute applications 362 based on OS 361 or in response to signals received from a gNB or operator. Processor / controller 340 is also coupled to I / O interface 345, which provides UE 116 with the ability to connect to other devices such as laptops and handheld computers. I / O interface 345 serves as a communication path between these accessories and processor / controller 340.

[0247] Processor / controller 340 is also coupled to input device(s) 350 and display 355. An operator of UE 116 can input data into UE 116 using input device(s) 350. Display 355 can be a liquid crystal display or other display capable of presenting text and / or at least limited graphics (such as from a website). Memory 360 is coupled to processor / controller 340. A portion of memory 360 can include random access memory (RAM), while another portion of memory 360 can include flash memory or other read-only memory (ROM).

[0248] although Figure 3a An example of a UE 116 is shown, but it is possible to Figure 3a Make various changes. For example, Figure 3a The various components in can be combined, further subdivided, or omitted, and additional components can be added according to specific needs. As a specific example, processor / controller 340 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Moreover, although Figure 3a The UE 116 is shown configured as a mobile phone or smartphone, but the UE can be configured to operate as other types of mobile or stationary devices.

[0249] Figure 3b An example gNB 102 according to the present disclosure is shown. Figure 3b The embodiment of the gNB 102 shown in FIGURE 1 is for illustration only, and Figure 1 Other gNBs can have the same or similar configurations. However, gNBs have a variety of configurations, and Figure 3b The scope of this disclosure is not limited to any particular implementation of a gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structure as gNB 102.

[0250] like Figure 3b As shown in FIG, gNB 102 includes multiple antennas 370a-370n, multiple RF transceivers 372a-372n, transmit (TX) processing circuitry 374, and receive (RX) processing circuitry 376. In some embodiments, one or more of the multiple antennas 370a-370n comprise a 2D antenna array. gNB 102 also includes a controller / processor 378, memory 380, and a backhaul or network interface 382.

[0251] RF transceivers 372a-372n receive incoming RF signals from antennas 370a-370n, such as signals transmitted by a UE or other gNB. RF transceivers 372a-372n downconvert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to RX processing circuitry 376, which filters, decodes, and / or digitizes the baseband or IF signals to generate processed baseband signals. RX processing circuitry 376 sends the processed baseband signals to controller / processor 378 for further processing.

[0252] 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 processed baseband or IF signals. The RF transceivers 372a-372n receive the outgoing processed baseband or IF signals from the TX processing circuitry 374 and up-convert the baseband or IF signals into RF signals that are transmitted via the antennas 370a-370n.

[0253] 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 via the RF transceivers 372a-372n, the RX processing circuitry 376, and the TX processing circuitry 374 in accordance with well-known principles. The controller / processor 378 can also support additional functionality, such as more advanced wireless communication functions. For example, the controller / processor 378 can perform blind interference sensing (BIS) procedures, such as those performed by a Blind Interference Sensing (BIS) algorithm, and decode received signals with interference signals subtracted. The controller / processor 378 can support any of a variety of other functions within the gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0254] The controller / processor 378 is also capable of executing programs and other processes resident in the memory 380, such as a basic OS. The controller / processor 378 is also capable of supporting channel quality measurement and reporting for systems having 2D antenna arrays 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 is capable of moving data into or out of the memory 380 as needed by the executing processes.

[0255] 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 a network. The backhaul or network interface 382 can support 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 one supporting 5G or new radio access technology, or NR, LTE, or LTE-A), the backhaul or network interface 382 can allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the backhaul or network interface 382 can allow the gNB 102 to communicate over a wired or wireless local area network or with a larger network, such as the Internet, via a wired or wireless connection. The backhaul or network interface 382 includes any suitable structure that supports communication over a wired or wireless connection, such as an Ethernet or RF transceiver.

[0256] Memory 380 is coupled to controller / processor 378. A portion of memory 380 can include RAM, while another portion of memory 380 can include flash memory or other ROM. In some embodiments, a plurality of instructions, such as a BIS algorithm, are stored in the memory. The plurality of instructions are configured to cause controller / processor 378 to perform the BIS process and decode the received signal after subtracting at least one interfering signal determined by the BIS algorithm.

[0257] As described in more detail below, the transmit and receive paths of gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuitry 374, and / or RX processing circuitry 376) support aggregated communications with FDD cells and TDD cells.

[0258] although Figure 3b An example of a gNB 102 is shown, but the Figure 3b For example, gNB 102 can include any number of Figure 3a. 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, gNB 102 can include multiple instances of each (such as one for each RF transceiver). To make the objectives, technical solutions, and advantages of the present disclosure more clear, embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0259] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0260] The embodiments of the present disclosure provide a communication method, a terminal device, and a base station, which may specifically be a method and device for random access resource configuration, including but not limited to a method for determining time domain resources related to random access, a method for determining frequency domain resources related to random access, and a method for determining a generation sequence for random access, etc.

[0261] The technical solutions of the embodiments of the present disclosure 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) system, universal mobile telecommunication system (UMTS), world-wide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) system or new radio (NR), etc. In addition, the technical solutions of the embodiments of the present disclosure can be applied to future-oriented communication technologies.

[0262] The following describes several exemplary embodiments to illustrate the technical solutions of the embodiments of the present disclosure and the technical effects produced by the technical solutions of the present disclosure. It should be noted that the following embodiments can refer to, draw on, or combine with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be repeated.

[0263] In an embodiment of the present disclosure, a method executed by a terminal device in a communication system is provided, such as Figure 4 As shown, the method includes:

[0264] Step S101: obtaining configuration information related to random access from a base station, where the configuration information includes a first offset;

[0265] Step S102: Determine resources related to random access according to the configuration information and a time domain reference point related to random access, where the time domain reference point is a time domain position related to a downlink channel and / or a downlink signal;

[0266] Step S103: Send a random access signal based on the resources.

[0267] In the embodiments of the present disclosure, configuration information, time domain reference points, resources, etc. related to random access may also be understood as configuration information, time domain reference points, resources, etc. used for random access. For ease of description below, "related to random access" may also be referred to as "used for random access", that is, the two can be replaced with each other.

[0268] The transmission links in wireless communication systems primarily include the downlink link from the gNB (base station) to the user equipment (UE) in 5G new wireless, 6G, or future wireless communication scenarios; the uplink from the UE to the network; and the sidelink (SL) from UE to UE, also known as the bypass link. Terminal devices such as A-IoT or P-IoT (also known as A-IoT or P-IoT tags) can establish uplink links by actively transmitting or by reflecting an uplink carrier. Determining the time domain resources for random access is a challenge.

[0269] In an embodiment of the present disclosure, a downlink signal and / or channel is used as a signal for triggering a terminal device to perform a random access process, that is, a time domain position related to the downlink channel and / or downlink signal is used as a time domain reference point, and a first offset is combined to determine the time domain resources for random access, thereby enabling random access in an asynchronous system.

[0270] Optionally, the method performed by the terminal device in the communication system provided by the embodiment of the present disclosure can be applied to special scenarios, such as terminal devices such as A-IoT and / or P-IoT in the Internet of Things scenario. Among them, devices such as A-IoT and / or P-IoT can further reduce the energy loss on the terminal side while reducing the deployment cost of the equipment. Specifically, the A-IoT or P-IoT terminal device can receive RF signals (Radio Frequency Signal, a radio signal) and / or collect energy from energy sources such as solar energy, vibration, thermal energy, and wind energy, and convert the received energy into AC or DC voltage. For example, the RF signal is converted into a DC signal through an RF-DC (Direct Current) converter, and then the electrical energy is transmitted to an energy storage device such as a rechargeable battery or capacitor for establishing a wireless communication link.

[0271] It can be understood that the use of downlink channels and / or downlink signals as signals for triggering terminal devices to perform random access procedures in scenarios such as A-IoT and / or P-IoT is a non-limiting example. This example is used to introduce an exemplary method in the embodiments of the present disclosure, and the introduced method can also be used for receiving other signals and / or channels in IoT scenarios or other scenarios.

[0272] In an embodiment of the present disclosure, a terminal device obtains configuration information related to random access by receiving a downlink signal and / or a downlink channel. The downlink signal and / or the downlink channel may indicate the configuration information related to random access through bit information. A configuration method for the downlink signal and / or the downlink channel may include a combination of one or more of the following:

[0273] (1) The downlink signal and / or downlink channel may be a signal or channel that is broadcast periodically within the cell, used to trigger the terminal device to perform a random access process and take inventory of all terminal devices that can be taken inventory within the cell coverage area, or the downlink signal and / or downlink channel may be a signal or channel that is multicast periodically within the cell, used to schedule one or a group of terminal devices within the cell. The downlink signal and / or downlink channel may be configured through an RRC (Radio Resource Control) message, and the terminal device may obtain configuration information related to random access by receiving the periodically transmitted downlink signal and / or downlink channel. Optionally, when the period of the downlink signal and / or downlink channel is not configured, the UE may default the period of the downlink signal and / or downlink channel to a predefined value, such as 20ms;

[0274] (2) The downlink signal and / or downlink channel may be semi-statically configured. The terminal device activates and / or deactivates the downlink signal and / or downlink channel resources used to trigger the terminal device to perform a random access procedure by receiving an RRC message and / or a MAC (Medium Access Control) CE (Control Element) message. The terminal device receives the downlink signal and / or downlink channel on the activated resources and obtains configuration information related to random access.

[0275] (3) The downlink signal and / or downlink channel can be dynamically configured, and the resources of the downlink signal and / or downlink channel used to trigger the terminal device to perform a random access process can be dynamically indicated through DCI (Downlink Control Information). Optionally, the terminal device determines the resources of the downlink signal and / or downlink channel by receiving a newly defined DCI format. The information carried by the newly defined DCI format includes at least one of the following: TDRA (Time domain resource assignment) for determining the time domain resource position of the downlink signal and / or downlink channel, and FDRA (Frequency domain resource assignment) for determining the frequency domain resource position of the downlink signal and / or downlink channel.

[0276] In the embodiment of the present disclosure, the time domain reference point may include but is not limited to at least one of the following:

[0277] (1) The time domain starting position of the synchronization signal;

[0278] (2) The time domain end position of the synchronization signal;

[0279] The time domain starting position may also be referred to as the time domain starting position or simply the time domain starting point or starting point, and the time domain ending position may also be referred to as the time domain ending position or simply the time domain ending point. Optionally, the time domain starting position or the time domain ending position of a synchronization signal closest to the downlink signal and / or downlink channel is used as the time domain reference point, and the time domain starting position of the random access resource is the time domain reference point plus a predefined or preconfigured time interval (first offset). Optionally, the time interval may be determined based on the downlink signal and / or downlink channel;

[0280] (3) The time domain starting position of the downlink signal and / or downlink channel carrying configuration information;

[0281] (4) The time domain end position of the downlink signal and / or downlink channel carrying the configuration information.

[0282] Optionally, starting from the time domain start position or the time domain end position of the downlink signal and / or downlink channel, a position after a predefined or preconfigured time interval (first offset) is determined as the time domain start position of the random access resource. Optionally, the time interval may be determined based on the downlink signal and / or downlink channel;

[0283] (5) A predetermined time unit, such as wireless system frame number 0 time slot 0 (SFN0slot0). Considering that SFN0slot0 is an absolute time domain starting position, the terminal device provided by the embodiment of the present disclosure and the UE of NR can share the same time domain starting position. The terminal device determines the index of the SFN where the downlink signal and / or downlink channel is located by receiving the downlink signal and / or downlink channel. Optionally, the terminal device can determine the time domain starting position of the random access resource by the index of the indicated SFN and a predefined or preconfigured time interval (first offset). Optionally, the time interval can be determined based on the downlink signal and / or downlink channel.

[0284] In the embodiment of the present disclosure, the configuration information related to random access may include but is not limited to a combination of one or more of the following:

[0285] (1) A time domain resource period related to random access. The time domain starting position of the period may be calculated from the SFN where the downlink signal and / or downlink channel is located, or the time domain starting position of the period may be calculated from the time domain starting position or the time domain ending position of the downlink signal and / or downlink channel plus a predefined or preconfigured time domain offset (first offset). The predefined or preconfigured time domain offset is a real number greater than or equal to 0. This configuration is more suitable for configuring a set of periodic time domain resources to facilitate alignment of time granularity with other signals or channels. The configured multiple access opportunities may enable the UE to transmit a sequence for random access on the periodic time domain resources used for random access using different transmit powers within the limit of the maximum number of transmissions of the sequence used for random access;

[0286] (2) a time domain starting position or a time domain ending position of a first time domain resource for random access within a period of time domain resources for random access. Optionally, the time domain starting position or the time domain ending position of the first time domain resource for random access may be preconfigured, or determined by the time domain starting position of the period of time domain resources for random access and a predefined or preconfigured time domain offset (third offset), wherein the predefined or preconfigured time domain offset is a real number greater than or equal to 0;

[0287] (3) The number N of time domain resources related to random access in the same period, that is, the number N of time domain resources used for random access in a period of time domain resources used for random access, where N is a real number greater than 1.

[0288] (4) The time domain offsets of the N-1 time domain starting positions or time domain ending positions relative to the time domain starting position or time domain ending position of the first time domain resource for random access within a period of time domain resources for random access, or the time interval between two adjacent time domain resources for random access. The time interval between two adjacent time domain resources for random access within a period is the time interval from the time domain ending position of the previous time domain resource for random access to the time domain starting position of the next time domain resource for random access. This configuration parameter is used to indicate the time domain starting positions of the N-1 time domain resources for random access within a period of time domain resources for random access. Optionally, the time interval between two adjacent time domain resources for random access within a period can be a predefined or preconfigured real number, or can be N-1 predefined values.

[0289] (5) Duration of the time domain resource used for random access: Indicates the duration of one time domain resource starting from the time domain start position of the time domain resource used for random access.

[0290] (6) The number of time domain resources M related to random access. This is the number M of time domain resources used for random access starting from the receipt of the downlink signal and / or downlink channel, where M is a real number greater than 1.

[0291] (7) A time domain start position or a time domain end position of a first time domain resource for random access starting from the receipt of a downlink signal and / or downlink channel. The time domain start position or the time domain end position of the first time domain resource for random access may be determined by a time domain reference point of the random access resource and a predefined or preconfigured time domain offset (first offset), wherein the predefined or preconfigured time domain offset is a real number greater than or equal to 0.

[0292] (8) Starting from the time domain reference point of the random access resource or the time domain starting position or ending position of the first time domain resource for random access, to the M-1 time domain starting positions of the M-1 time domain resources for random access, and / or the time interval between two adjacent time domain resources for random access; this configuration parameter is used to indicate M time domain resources for random access. Optionally, the time interval between two adjacent time domain resources for random access is the time interval from the time domain ending position of the previous time domain resource for random access to the time domain starting position of the next time domain resource for random access, which can be a predefined or preconfigured time domain offset (second offset), or can be M-1 predefined or preconfigured time domain offsets. This configuration is applicable to configuring a group of non-periodic time domain resources. The time domain offset is to reduce the impact of time domain synchronization error.

[0293] (9) Sequence format for random access, including the length of the guard interval for reducing uplink synchronization errors and / or the sequence length for random access and / or the length of the guard interval for reducing collisions caused by synchronization errors between terminal devices.

[0294] (10) Maximum number of transmissions of a sequence for random access. Considering that the terminal device is not aware of the transmit power of the sequence when sending the random access sequence, the terminal device will determine the transmit power of a sequence and use the transmit power to send the sequence for random access on the resource used for random access. If no random access response is received after a predefined or preconfigured period of time, the terminal device will increase the transmit power and send a reselected sequence for random access on the resource used for random access. The purpose of setting the maximum number of transmissions is to limit the number of times the terminal device resends the random access sequence. This configuration method is more suitable for configuring periodic resources for random access.

[0295] In an optional embodiment, the first offset is a time domain offset between a time domain reference point and a time domain start or end position of a resource related to random access. As an example, the terminal device can determine a time domain start position of a time domain resource for random access by using the time domain reference point of the random access resource and a first offset (such as time interval T2) determined based on a downlink signal and / or a downlink channel, or the time domain start position of the time domain resource for random access is no earlier than the time domain reference point of the random access resource plus a predefined or preconfigured time interval, and determine the duration of the time domain resource for random access by receiving a downlink signal and / or a downlink channel, such as Figure 5 As shown. The time interval T2 is the time interval between the time domain reference point of the random access resource and the time domain starting position of the time domain resource used for random access. Figure 5 For more information about the frequency domain, please refer to the following introduction.

[0296] Optionally, the configuration information also includes a second offset, wherein the second offset is the time domain offset between the time domain starting position of the i-th resource related to random access and the time domain starting position of the first resource related to random access, wherein the first resource related to random access is a resource related to random access determined based on the first offset and the time domain reference point, and i is an integer greater than 1. That is, the terminal device can determine the time domain starting position of the first time domain resource for random access through the time domain reference point of the random access resource and the first offset (such as time interval T2) determined based on the downlink signal and / or downlink channel. Or the time domain starting position of the first time domain resource for random access is not earlier than the time domain reference point of the random access resource plus a predefined or preconfigured time interval. Based on a set of time intervals {L1,…,L2} between the time domain reference point of the random access resource or the time domain starting position of the first time domain resource for random access to a set of time domain starting positions where the time domain resources for random access are located. M-1} (i.e., the second offset), determining a time domain starting position of a group of time domain resources for random access, or the time domain starting positions of subsequent M-1 time domain resources no earlier than the time domain reference point of the random access resource or the time domain starting position of the first time domain resource for random access plus a group of M-1 predefined or preconfigured time intervals. Determine the duration of the time domain resources for random access by receiving a downlink signal and / or a downlink channel, such as Figure 6 As shown. Among them, L1,…,L M-1 are predefined or preconfigured values, and L1,…,L M-1 is a real number greater than or equal to 0.

[0297] Alternatively, the second offset is the time interval between two adjacent random access-related resources in the time domain. The first resource related to random access is a resource related to random access determined based on the first offset and the time domain reference point. That is, the terminal device can determine the time domain starting position of the first time domain resource for random access through the time domain reference point of the random access resource and the first offset (such as the time interval T2) determined based on the downlink signal and / or downlink channel. Or the time domain starting position of the first time domain resource for random access is no earlier than the time domain reference point of the random access resource plus a predefined or preconfigured time interval. The time domain starting position of the subsequent M-1 time domain resources is determined based on the time domain starting or ending position of the first time domain resource for random access, and / or the time interval G1 (i.e., the second offset) between two adjacent time domain resources for random access configured based on the downlink signal and / or downlink channel, and the number M of time domain resources used for random access starting from the receipt of the downlink signal and / or downlink channel. As Figure 6As shown. Wherein, G1 is a predefined or preconfigured value, and G1 is a real number greater than or equal to 0. When the sequence format for random access is configured, G1 = 0. Wherein, Figure 6 For details about the frequency domain, please refer to the following description. Alternatively, the time domain starting position of the subsequent M-1 time domain resources shall not be earlier than the time domain starting or ending position of the previous time domain resource used for random access plus a predefined or preconfigured time interval.

[0298] In another optional embodiment, the first offset is the time domain offset between the time domain reference point and the start position of the period related to random access or synchronization. The configuration information also includes a third offset, wherein the third offset is the time domain offset between the start position of the period related to random access or synchronization and the time domain start or end position of the resource related to random access. That is, the terminal can determine a set of periodic time domain resources for random access through the time domain reference point of the random access resource and the time domain resource period for random access indicated based on the downlink signal and / or downlink channel, wherein, within a time domain resource period for random access, the terminal device determines a time domain start position of a time domain resource for random access based on the time domain start position of the time domain resource period for random access and a predefined or preconfigured time domain offset T1 (third offset), or a time domain start position of a time domain resource for random access is no earlier than the time domain start position of the time domain resource period for random access plus a predefined or preconfigured time interval. The duration of the time domain resource for random access is determined by receiving a downlink signal and / or a downlink channel, such as Figure 7 The time interval T1 is the time interval between the time domain starting position of the time domain resource period for random access and the time domain starting position of the time domain resource for random access. Figure 7 For more information about the frequency domain, please refer to the following introduction.

[0299] Optionally, the configuration information also includes a fourth offset, wherein the fourth offset is the time domain offset between the time domain starting position of the jth resource related to random access and the time domain starting position of the first resource related to random access or the period starting position of the period in the same period; wherein the first resource related to random access is the resource related to random access determined based on the third offset and the time domain starting position of the period, and j is an integer greater than 1. That is, the terminal device can determine a group of periodic time domain resources for random access through the time domain reference point of the random access resource and the time domain resource period for random access indicated by the downlink signal and / or downlink channel, wherein, within a time domain resource period for random access, the terminal device determines a group of periodic time domain resources for random access based on the time domain starting position of the time domain resource period for random access and a group of N predefined or preconfigured time domain offsets {T1, T1+L1,…, T1+LN-1}(fourth offset) determines the time domain starting position of a group of N time domain resources for random access, the time domain offset {T1, T1+L1, ..., T1+L N-1} is the time interval between the time domain starting position of the time domain resource period for random access and the time domain starting position of the time domain resource for random access. Or the time domain starting position of a group of N time domain resources for random access is not earlier than the time domain starting position of the time domain resource period for random access plus a group of N predefined or preconfigured time intervals. This time interval and / or time domain offset can be used for receiving synchronization signals. The duration of the time domain resource for random access is determined by receiving downlink signals and / or downlink channels, such as Figure 8 The time domain offset T1 is the time interval between the time domain start position of the time domain resource period for random access and the time domain start position of the first time domain resource for random access.

[0300] Alternatively, the fourth offset is the time interval between two adjacent random access-related resources in the time domain within the same period; wherein the first random access-related resource is a random access-related resource determined based on the third offset and the time domain starting position of the period, and j is an integer greater than 1. That is, the terminal device can determine a set of periodic time domain resources for random access based on the time domain reference point of the random access resource and the time domain resource period for random access indicated by the downlink signal and / or downlink channel, wherein, within a time domain resource period for random access, the terminal device determines the time domain starting position of the first time domain resource for random access based on the time domain starting position of the time domain resource period for random access and the time domain offset T1 (the third offset), or the time domain starting position of the first time domain resource for random access is no earlier than the time domain starting position of the time domain resource period for random access plus a predefined or preconfigured time interval. The terminal device can determine the time domain starting position of a group of N-1 time domain resources for random access based on the time domain starting position or the time domain ending position of the first time domain resource for random access and a group of N-1 predefined or preconfigured time domain offsets (fourth offsets), or the terminal device can determine the time domain starting position of a group of N-1 time domain resources for random access based on the starting position or the ending position of the first time domain resource for random access and a predefined or preconfigured time interval G1 (fourth offset), or the time domain starting position of a group of N-1 time domain resources for random access is not earlier than the time domain starting position or the ending position of the first time domain resource for random access plus a group of N-1 predefined or preconfigured time intervals, or the time domain starting position of subsequent N-1 time domain resources for random access is not earlier than the time domain starting position or the ending position of the previous time domain resource for random access plus a predefined or preconfigured time interval, and determine the duration of the time domain resources for random access by receiving downlink signals and / or downlink channels, such as Figure 8 As shown. Among them, Figure 8 For more information about the frequency domain, please refer to the following introduction.

[0301] In an embodiment of the present disclosure, the time domain offset and / or time interval and / or duration may be determined by multiples of an absolute time unit, such as multiples of 1 millisecond, 1 second, etc., or by the number of relative time units, where a time unit (also referred to as a time domain unit) may be: an OFDM (Orthogonal Frequency Division Multiplexing) symbol, an OFDM symbol group (consisting of multiple OFDM symbols), a time slot, a time slot group (consisting of multiple time slots), a subframe, a subframe group (consisting of multiple subframes), a system frame, a system frame group (consisting of multiple system frames), the duration occupied by symbol 0, the duration occupied by symbol 1, and the duration occupied by symbol 0 and symbol 1; a time unit may also be a combination of multiple granularities, such as N1 time slots plus N2 OFDM symbols.

[0302] Furthermore, the embodiments of the present disclosure provide a method for determining frequency domain resources for random access.

[0303] In the embodiment of the present disclosure, if the terminal device reports a UE capability of supporting frequency division multiplexing, the terminal device may be configured with X frequency domain resources in the same time unit for sending signals and / or channels related to random access.

[0304] In the embodiment of the present disclosure, the configuration information related to random access may include configuration information of frequency domain resources used for random access. Specifically, the configuration information of frequency domain resources used for random access may include, but is not limited to, a combination of one or more of the following:

[0305] (1) The bandwidth of the frequency domain resources used for random access, which is used to indicate the width of the frequency domain resources used by the terminal device for uplink transmission in the frequency domain;

[0306] (2) The subband bandwidth occupied by the frequency domain resource used for random access, which indicates the width of the frequency domain resource occupied starting from the frequency domain starting position of the frequency domain resource used for random access. This configuration is applicable to the case where multiple frequency domain resources are frequency-division multiplexed at the same time;

[0307] (3) The number of frequency domain resources X related to random access. That is, the number of frequency domain resources X that can be used for random access in the same time unit;

[0308] (4) The frequency domain offset of the frequency domain starting position or the frequency domain ending position of the frequency domain resource used for random access relative to the frequency domain reference point used for random access resources;

[0309] (5) The frequency domain interval between two adjacent frequency domain resources used for random access in the frequency domain.

[0310] The frequency domain interval between two adjacent frequency domain resources for random access in the frequency domain is the time interval from the frequency domain start position or the frequency domain end position of the previous frequency domain resource for random access to the frequency domain start position of the next frequency domain resource for random access, which can be a predefined or preconfigured real number, or can be X-1 predefined values. This configuration is applicable to configuring a group of X frequency domain resources, where X is a real number greater than 1;

[0311] Among them, the frequency domain starting position can also be called the frequency starting position or the frequency domain starting position or simply the frequency domain starting point or starting point, and accordingly, the frequency domain ending position can also be called the frequency ending position or the frequency domain end position or simply the frequency domain end point.

[0312] In the embodiment of the present disclosure, the above-mentioned resources related to random access are also determined based on the frequency domain reference point related to random access, wherein the frequency domain reference point is the frequency domain starting position corresponding to the ARFCN (Absolute Radio-Frequency Channel Number).

[0313] Optionally, the frequency domain reference point used for the random access resource includes at least one of the following:

[0314] (1) Absolute frequency point PointA;

[0315] (2) The frequency domain starting position of the uplink activated BWP (Bandwidth Part) PRB0 (Physical Resource Block 0);

[0316] (3) The frequency domain end position of the 10th PRB of the SSB (Synchronization Signal Block);

[0317] (4) Indicated ARFCN

[0318] (5) The uplink frequency domain starting position of the channel grid operating band;

[0319] (6) The center frequency domain position of the channel grid operating frequency band; the center frequency position of the channel grid operating frequency band refers to the average of the frequency domain start position of the channel grid and the frequency domain end position of the channel grid;

[0320] (7) a starting position of a channel grid operating frequency band determined based on the channel grid operating frequency band in which the downlink signal and / or downlink channel is located;

[0321] (8) The frequency domain starting position of the indicated GSCN (Global Synchronization Channel Number);

[0322] (9) An uplink frequency domain reference point determined based on the frequency domain starting position of the downlink signal and / or downlink channel and a predefined or preconfigured frequency domain offset (fifth offset), particularly applicable to a method for determining a frequency domain reference point of an uplink frequency band in an FDD frequency band;

[0323] (10) The uplink frequency domain reference point determined based on the frequency domain end position of the downlink signal and / or downlink channel and the frequency domain offset (the fifth offset) is also applicable to the method for determining the frequency domain reference point of the uplink frequency band in the FDD band;

[0324] (11) The frequency domain starting position for uplink carrier transmission, such as the frequency domain starting position of the uplink carrier used for reflection.

[0325] In the disclosed embodiment, the configuration information further includes a fifth offset, where the fifth offset is the frequency domain offset between the frequency domain reference point and the frequency domain start or end position of the resource related to random access. That is, the terminal device can determine a frequency domain start position of the frequency domain resource used for random access based on the frequency domain reference point used for the random access resource and a predefined or preconfigured frequency domain offset (fifth offset), and determine a frequency domain resource used for random access based on the frequency domain start position and the bandwidth of the frequency domain resource used for random access.

[0326] In an optional implementation manner, the terminal device may select a frequency domain reference point for random access resources and a set of X predefined or preconfigured frequency domain offsets {F1, ..., F X Determine a set of X frequency domain starting positions of frequency domain resources for random access, and determine a set of X frequency domain resources for random access based on the frequency domain starting positions and the bandwidth of the frequency domain resources for random access. The frequency domain offset is the frequency domain interval from the frequency domain reference point for the random access resource to the frequency domain starting position of the frequency domain resources for random access.

[0327] In another optional embodiment, the configuration information further includes a sixth offset, wherein the sixth offset is the frequency domain offset between the frequency domain starting position of the kth random access-related resource and the frequency domain starting position of the first random access-related resource; wherein the first random access-related resource is a random access-related resource determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1. That is, the terminal device can determine the frequency domain starting position of the first frequency domain resource for random access based on the frequency domain reference point for the random access resource and a predefined or preconfigured frequency domain offset (fifth offset), and determine the frequency domain starting positions of subsequent X-1 frequency domain resources for random access based on the frequency domain starting or ending position of the first frequency domain resource for random access and X-1 predefined or preconfigured frequency domain offsets {F2,…,FX}. The frequency domain offset is the frequency domain interval from the frequency domain starting position of the first random access-related resource to the frequency domain starting position of each subsequent frequency domain resource for random access.

[0328] Alternatively, the sixth offset is the frequency domain interval between two adjacent random access-related resources in the frequency domain; wherein the first random access-related resource is a random access-related resource determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1. That is, the terminal device can determine the frequency domain starting position of the first frequency domain resource for random access based on the frequency domain reference point for random access resources and a predefined or preconfigured frequency domain offset (fifth offset), and determine the frequency domain starting position of the subsequent X-1 frequency domain resources for random access based on the frequency starting or ending position of the first frequency domain resource for random access and the frequency domain interval R1 (sixth offset) between two adjacent frequency domain resources for random access in the frequency domain. Wherein, R1 is a predefined or preconfigured value, which is a real number greater than 0.

[0329] In the embodiments of the present disclosure, the frequency domain offset and / or bandwidth and / or frequency domain interval can be determined by multiples of absolute frequency units, such as multiples of 1 Hz, 1 kHz, etc.; or by the number of relative frequency units. A frequency unit (also called a frequency domain unit) can be: a subcarrier, a subcarrier group (composed of multiple subcarriers), a resource block (RB), which can also be called a physical resource block (PRB), a resource block group (composed of multiple RBs), a bandwidth part (BWP), a band part group (composed of multiple BWPs), a frequency band / carrier, a frequency band group / carrier group, or the bandwidth of a single carrier signal. A frequency domain unit can also be a combination of multiple granularities, such as M1 PRBs plus M2 subcarriers.

[0330] Furthermore, an embodiment of the present disclosure also provides a method for determining a sequence for random access.

[0331] In the embodiment of the present disclosure, the configuration information related to random access may include configuration information of a sequence used for random access, and the configuration information further includes but is not limited to at least one of the following:

[0332] (1) The total number of sequences related to random access. The terminal device randomly selects a sequence index with equal probability based on the total number of configured sequences and uses the sequence corresponding to the selected sequence index as the sequence for random access;

[0333] (2) Sequence length related to random access: The terminal device randomly generates a fixed-length 0-1 bit sequence based on the sequence length used for random access as the sequence used for random access.

[0334] (3) Sequence index related to random access.

[0335] In the disclosed embodiments, a random access sequence with a fixed length can be generated based on the terminal device's International Mobile Subscriber Identity (IMSI). This uniquely generates a fixed-length sequence for random access. Alternatively, the random access sequence can be a truncated IMSI. The length of the random access sequence is predefined or preconfigured.

[0336] Furthermore, the embodiment of the present disclosure also provides resource configuration for random access in a non-contention random access procedure.

[0337] In an embodiment of the present disclosure, the configuration information also includes information of known terminal devices; wherein the information of known terminal devices includes at least one of the following: a terminal device index; an index of a resource; and a sequence index.

[0338] Optionally, when the downlink signal and / or downlink channel indicates that one or a group of terminal devices with known terminal device indexes perform a non-contention random access procedure, the configuration information of resources used for random access includes at least one of the following:

[0339] (1) A terminal device index and / or an index of a time-frequency resource for random access and / or a sequence index for random access, for transmission of a non-contention random access sequence. The terminal device transmits the indicated sequence for random access on the time-frequency resource corresponding to the index of the time-frequency resource for random access, initiating the random access procedure.

[0340] (2) A set of S configuration information of resources for random access, wherein one piece of configuration information of resources for random access may include a terminal device index and / or an index of a time-frequency resource for random access and / or a sequence index for random access, such as Figure 9 shown.

[0341] (3) A set of S terminal device indices and / or S time-frequency resource indices for random access and / or S sequence indices for random access, such as Figure 10 shown.

[0342] In the embodiment of the present disclosure, the index of the resource is to number the first time domain resource for each frequency domain resource, and to number the other time domain resources in the same manner. In other words, the association relationship between the time-frequency resource and the time-frequency resource index for random access can be to first execute the frequency domain resource numbering and then execute the time domain resource numbering, determine the first frequency domain resource based on the frequency domain reference point and a predefined or preconfigured frequency offset (fifth offset), and determine the first time domain resource based on the time domain reference point and a predefined or preconfigured time domain offset (first offset), that is, the time-frequency resource index is 1. The second time-frequency resource for random access is determined based on the determined second frequency domain resource and the first time domain resource position, that is, the time-frequency resource index is 2, and the other resource numbers are numbered in the same way.

[0343] Among them, the resource index skips the resource corresponding to the frequency domain position where the uplink carrier used for reflection is located for numbering. Specifically, if the terminal device reports the UE capability of supporting frequency division multiplexing, the terminal device does not select the time-frequency resource corresponding to the frequency where the uplink carrier used for reflection is located as the time-frequency resource for random access, and the association relationship between the time-frequency resource for random access and the time-frequency resource index can be to execute the frequency domain resource numbering first and then the time domain resource numbering, and skip the time-frequency resource corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0344] In an embodiment of the present disclosure, if the capabilities of a terminal device include support for frequency division multiplexing, resources related to random access are mapped in ascending order of frequency domain resource indices of frequency division multiplexing, and then mapped in ascending order of time domain resource indices; that is, the terminal device first maps in ascending order of frequency domain resource indices used for random access of frequency division multiplexing, and then maps in ascending order of time domain resource indices used for random access. And / or, if the terminal device does not include the capability, resources related to random access are mapped in ascending order of time domain resource indices, that is, if the terminal device does not support the UE capability of frequency division multiplexing, the terminal device maps in ascending order of time domain resource indices used for random access.

[0345] In an embodiment of the present disclosure, a method executed by a terminal device in a communication system is also provided. Figure 11 As shown, the method includes:

[0346] Step S201: obtaining configuration information related to random access from a base station, where the configuration information includes a fifth offset, where the fifth offset is a frequency domain offset between a frequency domain reference point and a frequency domain start or end position of a resource related to random access, and the frequency domain reference point is a frequency domain start position corresponding to the ARFCN;

[0347] Step S202: Determine resources related to random access based on the configuration information and the frequency domain reference point;

[0348] Step S203: Send a random access signal based on the resources.

[0349] In an optional embodiment, the frequency domain reference point also includes at least one of the following: an absolute frequency point; a frequency domain starting position of the uplink activated BWP PRB0; a frequency domain ending position of the 10th PRB of the SSB; an uplink frequency domain starting position of the channel grid operating band; a center frequency domain position of the channel grid operating band; a starting position of the channel grid operating band determined based on the channel grid operating band in which the downlink signal and / or downlink channel is located; a frequency domain starting position of the GSCN; an uplink frequency domain reference point determined based on the frequency domain starting position and frequency domain offset of the downlink signal and / or downlink channel; an uplink frequency domain reference point determined based on the frequency domain ending position and frequency domain offset of the downlink signal and / or downlink channel; and a frequency domain starting position for uplink carrier transmission.

[0350] In an optional implementation manner, the fifth offset is a frequency domain offset between a frequency domain reference point and a frequency domain start or end position of resources related to random access.

[0351] In an optional implementation, the configuration information further includes a sixth offset, wherein:

[0352] The sixth offset is a frequency domain interval between two adjacent random access-related resources in the frequency domain; or,

[0353] The sixth offset is a frequency domain offset between a frequency domain starting position of the kth random access-related resource and a frequency domain starting position of the first random access-related resource;

[0354] The first resource related to random access is a resource related to random access determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1.

[0355] In an optional implementation manner, the configuration information further includes: the number X of frequency domain resources related to random access.

[0356] In an optional implementation manner, the configuration information further includes at least one of the following: the total number of sequences related to random access; the sequence length related to random access; and the sequence index related to random access.

[0357] In an optional implementation, the method further includes: generating a random access-related sequence having a sequence length based on an International Mobile Subscriber Identity (IMSI).

[0358] In an optional implementation, the configuration information further includes: information of known terminal devices; wherein the information of known terminal devices includes at least one of the following: a terminal device index; an index of a resource; and a sequence index.

[0359] In an optional embodiment, the resource index is to number the first time domain resource for each frequency domain resource, and to number other time domain resources in the same manner, wherein the resource index skips the numbering of the resources corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0360] In an optional embodiment, if the capability of the terminal device includes supporting frequency division multiplexing, the resources related to random access are mapped in the ascending order of the frequency domain resource index of the frequency division multiplexing, and then mapped in the ascending order of the time domain resource index; and / or, the terminal device does not include the capability, and the resources related to random access are mapped in the ascending order of the time domain resource index.

[0361] For a detailed functional description of the method executed by the terminal device in the communication system provided by the embodiment of the present disclosure, please refer to the corresponding description in the previous text and will not be repeated here.

[0362] In an embodiment of the present disclosure, a method executed by a base station in a communication system is also provided. Figure 12 As shown, the method includes:

[0363] Step S301: Sending configuration information related to random access to a terminal device, where the configuration information includes a first offset;

[0364] Step S301: Receive a random access signal sent by a terminal device, wherein a sending resource of the random access signal is determined based on configuration information and a time domain reference point related to random access, and the time domain reference point is a time domain position related to a downlink channel and / or a downlink signal.

[0365] In an optional embodiment, the time domain reference point includes at least one of the following: the time domain starting position of the synchronization signal; the time domain ending position of the synchronization signal; the time domain starting position of the downlink signal and / or downlink channel carrying the configuration information; and the time domain ending position of the downlink signal and / or downlink channel carrying the configuration information.

[0366] In an optional implementation manner, the first offset is a time domain offset between a time domain reference point and a time domain start or end position of a resource related to random access.

[0367] In an optional embodiment, the configuration information also includes a second offset, wherein the second offset is the time interval between two adjacent random access-related resources in the time domain; or, the second offset is the time domain offset between the time domain starting position of the i-th random access-related resource and the time domain starting position of the first random access-related resource; wherein the first random access-related resource is a random access-related resource determined based on the first offset and the time domain reference point, and i is an integer greater than 1.

[0368] In an optional implementation, the configuration information further includes: the number M of time domain resources related to random access.

[0369] In an optional embodiment, the configuration information also includes a third offset, wherein the third offset is the time domain offset between the start position of the period related to random access or synchronization and the time domain start or end position of the resource related to random access; the first offset is the time domain offset between the time domain reference point and the start position of the period related to random access or synchronization.

[0370] In an optional embodiment, the configuration information also includes a fourth offset, wherein the fourth offset is the time interval between two adjacent random access-related resources in the time domain within the same cycle; or, the fourth offset is the time domain offset between the time domain starting position of the j-th random access-related resource in the same cycle and the time domain starting position of the first random access-related resource or the cycle starting position of the cycle; wherein the first random access-related resource is a random access-related resource determined based on the third offset and the time domain starting position of the cycle, and j is an integer greater than 1.

[0371] In an optional implementation manner, the configuration information further includes: the number N of time domain resources related to random access in the same period.

[0372] In an optional implementation manner, the resources related to the random access are further determined based on a frequency domain reference point related to the random access, wherein the frequency domain reference point is a frequency domain starting position corresponding to the ARFCN.

[0373] In an optional embodiment, the frequency domain reference point also includes at least one of the following: an absolute frequency point; a frequency domain starting position of the uplink activated BWP PRB0; a frequency domain ending position of the 10th PRB of the SSB; an uplink frequency domain starting position of the channel grid operating band; a center frequency domain position of the channel grid operating band; a starting position of the channel grid operating band determined based on the channel grid operating band in which the downlink signal and / or downlink channel is located; a frequency domain starting position of the GSCN; an uplink frequency domain reference point determined based on the frequency domain starting position and frequency domain offset of the downlink signal and / or downlink channel; an uplink frequency domain reference point determined based on the frequency domain ending position and frequency domain offset of the downlink signal and / or downlink channel; and a frequency domain starting position for uplink carrier transmission.

[0374] In an optional implementation, the configuration information further includes a fifth offset, where the fifth offset is a frequency domain offset between the frequency domain reference point and a frequency domain start or end position of resources related to random access.

[0375] In an optional embodiment, the configuration information also includes a sixth offset, wherein the sixth offset is the frequency domain interval between two adjacent random access-related resources in the frequency domain; or, the sixth offset is the frequency domain offset between the frequency domain starting position of the kth random access-related resource and the frequency domain starting position of the first random access-related resource; wherein the first random access-related resource is a random access-related resource determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1.

[0376] In an optional implementation manner, the configuration information further includes: the number X of frequency domain resources related to random access.

[0377] In an optional implementation manner, the configuration information further includes at least one of the following: the total number of sequences related to random access; the sequence length related to random access; and the sequence index related to random access.

[0378] In an optional implementation manner, the sequence length related to random access is generated by the terminal device based on the International Mobile Subscriber Identity IMSI.

[0379] In an optional implementation, the configuration information further includes: information of known terminal devices; wherein the information of known terminal devices includes at least one of the following: a terminal device index; an index of a resource; and a sequence index.

[0380] In an optional embodiment, the resource index is to number the first time domain resource for each frequency domain resource, and to number other time domain resources in the same manner, wherein the resource index skips the numbering of the resources corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0381] In an optional embodiment, if the capability of the terminal device includes supporting frequency division multiplexing, the resources related to random access are mapped in the ascending order of the frequency domain resource index of the frequency division multiplexing, and then mapped in the ascending order of the time domain resource index; and / or, the terminal device does not include the capability, and the resources related to random access are mapped in the ascending order of the time domain resource index.

[0382] In an embodiment of the present disclosure, a method executed by a base station in a communication system is also provided. Figure 13 As shown, the method includes:

[0383] Step S401: Sending configuration information related to random access to the terminal device, where the configuration information includes a fifth offset, where the fifth offset is a frequency domain offset between a frequency domain reference point and a frequency domain start or end position of a resource related to random access, and the frequency domain reference point is a frequency domain start position corresponding to the ARFCN;

[0384] Step S402: Receive a random access signal sent by a terminal device, wherein a transmission resource of the random access signal is determined based on configuration information and a frequency domain reference point.

[0385] In an optional embodiment, the frequency domain reference point also includes at least one of the following: an absolute frequency point; a frequency domain starting position of the uplink activated BWP PRB0; a frequency domain ending position of the 10th PRB of the SSB; an uplink frequency domain starting position of the channel grid operating band; a center frequency domain position of the channel grid operating band; a starting position of the channel grid operating band determined based on the channel grid operating band in which the downlink signal and / or downlink channel is located; a frequency domain starting position of the GSCN; an uplink frequency domain reference point determined based on the frequency domain starting position and frequency domain offset of the downlink signal and / or downlink channel; an uplink frequency domain reference point determined based on the frequency domain ending position and frequency domain offset of the downlink signal and / or downlink channel; and a frequency domain starting position for uplink carrier transmission.

[0386] In an optional implementation manner, the fifth offset is a frequency domain offset between a frequency domain reference point and a frequency domain start or end position of resources related to random access.

[0387] In an optional embodiment, the configuration information also includes a sixth offset, wherein the sixth offset is the frequency domain interval between two adjacent random access-related resources in the frequency domain; or, the sixth offset is the frequency domain offset between the frequency domain starting position of the kth random access-related resource and the frequency domain starting position of the first random access-related resource; wherein the first random access-related resource is a random access-related resource determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1.

[0388] In an optional implementation manner, the configuration information further includes: the number X of frequency domain resources related to random access.

[0389] In an optional implementation manner, the configuration information further includes at least one of the following: the total number of sequences related to random access; the sequence length related to random access; and the sequence index related to random access.

[0390] In an optional implementation manner, the sequence length related to random access is generated by the terminal device based on the International Mobile Subscriber Identity IMSI.

[0391] In an optional implementation, the configuration information further includes: information of known terminal devices; wherein the information of known terminal devices includes at least one of the following: a terminal device index; an index of a resource; and a sequence index.

[0392] In an optional embodiment, the resource index is to number the first time domain resource for each frequency domain resource, and to number other time domain resources in the same manner, wherein the resource index skips the numbering of the resources corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0393] In an optional embodiment, if the capability of the terminal device includes supporting frequency division multiplexing, the resources related to random access are mapped in the ascending order of the frequency domain resource index of the frequency division multiplexing, and then mapped in the ascending order of the time domain resource index; and / or, the terminal device does not include the capability, and the resources related to random access are mapped in the ascending order of the time domain resource index.

[0394] The method executed by the base station in the communication system provided by the embodiment of the present disclosure has an implementation principle corresponding to that of the terminal device side and has corresponding technical effects. For the detailed functional description of the base station side, please refer to the description of the corresponding method on the terminal device side in the previous text, which will not be repeated here.

[0395] In an embodiment of the present disclosure, an electronic device is provided, comprising a transceiver configured to send and receive signals; and a processor coupled to the transceiver and configured to implement the steps of the aforementioned method embodiments. Optionally, the electronic device may refer to a terminal device, and the processor is configured to implement the steps of the method embodiments performed by the terminal device. For detailed functional descriptions and the beneficial effects produced, please refer to the descriptions in the aforementioned method embodiments performed by the terminal device, which will not be repeated here. Optionally, the electronic device may refer to a base station, and the processor is configured to implement the steps of the method embodiments performed by the base station. For detailed functional descriptions and the beneficial effects produced, please refer to the descriptions in the aforementioned method embodiments performed by the base station, which will not be repeated here. In actual applications, terminal devices or base stations can be understood as different network nodes.

[0396] An embodiment of the present disclosure also provides an electronic device, which includes a processor and, optionally, may also include a transceiver and / or memory coupled to the processor, wherein the processor is configured to execute the steps of the method provided in any optional embodiment of the present disclosure.

[0397] Figure 14 FIG. 1 shows a schematic structural diagram of an electronic device to which an embodiment of the present invention is applicable. Figure 14 As shown, Figure 14 The electronic device 4000 shown includes: a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, such as through a bus 4002. Optionally, the electronic device 4000 may further include a transceiver 4004, which may be used for data interaction between the electronic device and other electronic devices, such as data transmission and / or data reception. It should be noted that in actual applications, the transceiver 4004 is not limited to one, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present disclosure. Optionally, the electronic device may be a first network node, a second network node, or a third network node.

[0398] Processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. Processor 4001 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0399] Bus 4002 may include a path for transmitting information between the above components. Bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. Bus 4002 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 14 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0400] The memory 4003 can be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, other magnetic storage devices, or any other medium that can be used to carry or store computer programs and can be read by a computer, without limitation here.

[0401] The memory 4003 is used to store the computer program for executing the embodiments of the present disclosure, and the execution is controlled by the processor 4001. The processor 4001 is used to execute the computer program stored in the memory 4003 to implement the steps shown in the above method embodiments.

[0402] An embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps and corresponding contents of the aforementioned method embodiment can be implemented.

[0403] The embodiments of the present disclosure further provide a computer program product, including a computer program, which can implement the steps and corresponding contents of the aforementioned method embodiments when executed by a processor.

[0404] The terms "first," "second," "third," "fourth," "1," "2," and the like (if any) in the description and claims of the present disclosure and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present disclosure described herein can be practiced in an order other than that shown or described.

[0405] It should be understood that, although the flowcharts of the embodiments of the present disclosure indicate the various operation steps by arrows, the order of implementation of these steps is not limited to the order indicated by the arrows. Unless otherwise clearly stated herein, in some implementation scenarios of the embodiments of the present disclosure, the implementation steps in each flowchart can be performed in other orders as required. In addition, some or all of the steps in each flowchart may include multiple sub-steps or multiple stages based on the actual implementation scenario. Some or all of these sub-steps or stages can be executed at the same time, and each sub-step or stage in these sub-steps or stages can also be executed at different times. In scenarios where the execution times are different, the order of execution of these sub-steps or stages can be flexibly configured as required, and the embodiments of the present disclosure do not limit this.

[0406] The above text and drawings are provided as examples only to help readers understand the present disclosure. They are not intended to, and should not be interpreted 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, without departing from the scope of the present disclosure, the illustrated embodiments and examples may be modified and other similar implementations based on the technical concepts of the present disclosure may be adopted, which also fall within the scope of protection of the embodiments of the present disclosure.

Claims

1. A method executed by a terminal device in a communication system, characterized in that: include: Acquire configuration information related to random access from a base station, where the configuration information includes a first offset; Determining resources related to random access according to the configuration information and a time domain reference point related to random access, where the time domain reference point is a time domain position related to a downlink channel and / or a downlink signal; A random access signal is sent based on the resource.

2. The method according to claim 1, characterized in that The time domain reference point includes at least one of the following: The time domain starting position of the synchronization signal; The time domain end position of the synchronization signal; The time domain starting position of the downlink signal and / or downlink channel carrying the configuration information; The time domain end position of the downlink signal and / or downlink channel carrying the configuration information.

3. The method according to claim 1, characterized in that The first offset is a time domain offset between the time domain reference point and a time domain start or end position of a resource related to random access.

4. The method according to claim 3, characterized in that The configuration information also includes a second offset, wherein The second offset is the time interval between two adjacent random access-related resources in the time domain; or, The second offset is the time domain offset between the time domain starting position of the i-th random access-related resource and the time domain starting position of the first random access-related resource; The first resource related to random access is a resource related to random access determined based on the first offset and the time domain reference point, and i is an integer greater than 1.

5. The method according to claim 4, characterized in that The configuration information also includes: The number M of time domain resources related to random access.

6. The method according to claim 1, wherein The configuration information also includes a third offset, wherein The third offset is a time domain offset between a start position of a period related to random access or synchronization and a time domain start or end position of a resource related to random access; The first offset is a time domain offset between the time domain reference point and a start position of a cycle related to random access or synchronization.

7. The method according to claim 6, characterized in that The configuration information also includes a fourth offset, wherein The fourth offset is the time interval between two adjacent random access-related resources in the time domain within the same period; or, The fourth offset is the time domain offset between the time domain starting position of the jth random access-related resource and the time domain starting position of the first random access-related resource or the period starting position of the period in the same period; The first resource related to random access is a resource related to random access determined based on the third offset and the time domain starting position of the cycle, and j is an integer greater than 1.

8. The method according to claim 6, characterized in that The configuration information also includes: The number N of time domain resources related to random access in the same period.

9. The method according to any one of claims 1 to 8, characterized in that The resources related to random access are also determined based on a frequency domain reference point related to random access, wherein the frequency domain reference point is a frequency domain starting position corresponding to an absolute radio frequency channel number ARFCN.

10. The method according to claim 9, characterized in that The frequency domain reference point further includes at least one of the following: Absolute frequency; The frequency domain starting position of the uplink active bandwidth part BWP physical resource block PRB0; The frequency domain end position of the 10th PRB of the synchronization signal block SSB; The uplink frequency domain starting position of the channel grid operating band; The center frequency domain position of the channel grid operating band; A starting position of a channel grid operating frequency band determined according to a channel grid operating frequency band in which a downlink signal and / or a downlink channel is located; The frequency domain starting position of the global synchronization channel number GSCN; An uplink frequency domain reference point determined based on the frequency domain starting position and frequency domain offset of the downlink signal and / or downlink channel; An uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel; Frequency domain starting position used for uplink carrier transmission.

11. The method according to claim 9, characterized in that The configuration information further includes a fifth offset, where the fifth offset is a frequency domain offset between the frequency domain reference point and a frequency domain start or end position of resources related to random access.

12. The method according to claim 11, characterized in that The configuration information also includes a sixth offset, wherein The sixth offset is a frequency domain interval between two adjacent random access-related resources in the frequency domain; or, The sixth offset is a frequency domain offset between a frequency domain starting position of the kth random access-related resource and a frequency domain starting position of the first random access-related resource; The first resource related to random access is a resource related to random access determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1.

13. The method according to claim 12, characterized in that The configuration information also includes: The number of frequency domain resources X related to random access.

14. The method according to any one of claims 1 to 13, characterized in that The configuration information also includes at least one of the following: The total number of sequences associated with random access; Sequence length associated with random access; Sequence index related to random access.

15. The method according to any one of claims 1 to 14, characterized in that The configuration information also includes: Information about known terminal devices; The known terminal device information includes at least one of the following: Terminal device index; an index of the resource; Sequence index.

16. A method executed by a terminal device in a communication system, characterized in that: include: Obtaining configuration information related to random access from the base station, the configuration information including a fifth offset, wherein the fifth offset is a frequency domain offset between a frequency domain reference point and a frequency domain start or end position of resources related to the random access, the frequency domain reference point being a frequency domain start position corresponding to an absolute radio frequency channel number (ARFCN); determining resources related to random access according to the configuration information and the frequency domain reference point; A random access signal is sent based on the resource.

17. A method performed by a base station in a communication system, characterized in that: include: Sending configuration information related to random access to the terminal device, where the configuration information includes a first offset; Receive a random access signal sent by the terminal device, wherein the sending resource of the random access signal is determined based on the configuration information and a time domain reference point related to random access, and the time domain reference point is a time domain position related to the downlink channel and / or downlink signal.

18. A method executed by a base station in a communication system, characterized in that: include: Sending configuration information related to random access to the terminal device, the configuration information including a fifth offset, wherein the fifth offset is a frequency domain offset between a frequency domain reference point and a frequency domain start or end position of a resource related to random access, the frequency domain reference point being the frequency domain start position corresponding to the absolute radio frequency channel number ARFCN; Receive a random access signal sent by the terminal device, wherein a sending resource of the random access signal is determined based on the configuration information and the frequency domain reference point.

19. A terminal device, characterized in that: include: transceivers, and A processor is coupled to the transceiver and configured to execute the method according to any one of claims 1 to 16.

20. A base station, characterized in that: include: transceivers, and A processor is coupled to the transceiver and configured to execute the method of claim 17 or 18.

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