A physical downlink control channel transmission method and device

Abstract

The application provides a physical downlink control channel transmission method and device. A terminal device acquires first indication information, which is used to indicate time-frequency resource positions of a first SIB1-PDCCH and an additional SIB1-PDCCH. The terminal device detects the first SIB1-PDCCH and the additional SIB1-PDCCH at the corresponding time-frequency resource positions according to the indication of the first indication information, and acquires a system information block 1 (SIB1) according to the detected first SIB1-PDCCH and the additional SIB1-PDCCH. In the case of insufficient SIB1-PDCCH coverage (for example, a higher frequency band), joint detection of the first SIB1-PDCCH and the additional SIB1-PDCCH can improve the coverage capability of the SIB1-PDCCH, so that the terminal device acquires the SIB1 message and completes initial access.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and more specifically, to a physical downlink control channel transmission method and apparatus. Background Technology

[0002] Massive MIMO (Multiple Input Multiple Output) technology can significantly improve the capacity and coverage of wireless communication systems. In New Radio (NR) systems, base stations can be equipped with dozens or even hundreds of antenna elements, utilizing massive MIMO technology to achieve greater system capacity and coverage gains. Essentially, massive MIMO uses a large number of transmitting antennas to transmit signals according to the channel characteristics at both ends, achieving better channel matching and gain. Common matching methods include beamforming and frequency domain precoding. Therefore, a prerequisite for achieving massive MIMO gain is obtaining channel characteristic information.

[0003] For data channels serving user equipment, user equipment and base stations can perform channel state information (CSI) estimation procedures, thus accurately obtaining channel characteristic information for Massive MIMO transmission.

[0004] For broadcast channels, since the information transmitted by the base station serves all user equipment (including potentially unconnected user equipment), the base station has almost no channel state information for the channels between user equipment. Therefore, it can only transmit broadcast information in a very simple way, such as dividing the broadcast information into several beams for transmission. This results in the coverage capability of broadcast channels being weaker than that of data channels.

[0005] The broadcast channels involved in the initial access process include the synchronization signal block (SSB), the physical downlink control channel (PDCCH), and the physical downlink share channel (PDSCH). To access the network, the user equipment first needs to acquire system information block (SIB) 1. The scheduling information of SIB1 is carried in the physical downlink control channel SIB1-PDCCH of system information block 1.

[0006] With the emergence of new frequency band applications or scenarios, such as scenarios with coverage of more distant cells or situations where new frequency bands have greater path loss, user equipment will be unable to obtain valid SIB1 messages and will be unable to complete the initial access. Summary of the Invention

[0007] This application provides a physical downlink control channel transmission method and apparatus.

[0008] In a first aspect, this application provides a physical downlink control channel transmission method, the method comprising: acquiring first indication information, the first indication information being used to indicate the time-frequency resource locations of the physical downlink control channel SIB1-PDCCH and the supplementary SIB1-PDCCH of the first system information block 1;

[0009] The time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH are determined based on the first indication information.

[0010] In the above embodiments, the first SIB1-PDCCH can be understood as the SIB1-PDCCH involved in the existing 3GPP protocol 38.213, and the supplementary SIB1-PDCCH can be understood as a supplementary SIB1-PDCCH added on the basis of the first SIB1-PDCCH. This supplementary SIB1-PDCCH can be called the supplementary SIB1-PDCCH or other names, and this application does not limit it here. In the case of insufficient SIB1-PDCCH coverage (e.g., higher frequency bands), the coverage capability of SIB1-PDCCH can be improved by using the first SIB1-PDCCH and the supplementary SIB1-PDCCH.

[0011] In conjunction with the first aspect, in one possible implementation, the method further includes: detecting a first SIB1-PDCCH and an additional SIB1-PDCCH based on the first indication information;

[0012] System information block 1SIB1 is obtained based on the detected first SIB1-PDCCH and additional SIB1-PDCCH.

[0013] Based on the above scheme, if the terminal device cannot detect the first SIB1-PDCCH, it can detect the additional SIB1-PDCCH to complete the initial access process according to the indication of the first indication information; or if the terminal device detects the first SIB1-PDCCH but cannot correctly demodulate the scheduling information carried by the first SIB1-PDCCH, the terminal device can detect the additional SIB1-PDCCH, demodulate the detected additional SIB1-PDCCH and the first SIB1-PDCCH together, thereby improving the reliability of SIB1-PDCCH, obtaining the system information block SIB1, and completing the initial access process.

[0014] In conjunction with the first aspect above, in one possible implementation, the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH include: the time-frequency resource location of the first SIB1-PDCCH and the time-frequency resource location of the additional SIB1-PDCCH; or the overall (or common) time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH.

[0015] Based on this scheme, the first indication information can simultaneously indicate the time-frequency resource location of the first SIB-PDCCH and the time-frequency resource location of the supplementary SIB1-PDCCH without introducing additional signaling overhead; or the first indication information can also indicate the overall time-frequency resource location of the first SIB1-PDCCH and the supplementary SIB1-PDCCH without generating additional signaling overhead. Both methods can improve the coverage of SIB1-PDCCH by introducing the supplementary SIB1-PDCCH, assisting the terminal device in completing the initial access.

[0016] In conjunction with the first aspect and its possible implementations described above, the first indication information indicates one or more offsets, which are used to indicate the offset of the time-frequency resource location of the additional SIB1-PDCCH relative to the time-frequency resource location of the first SIB1-PDCCH; or

[0017] This offset is used to indicate the offset of the time-frequency resource location of the additional SIB1-PDCCH relative to the time-frequency resource location of the synchronization signal block SSB.

[0018] One or more time-frequency resource locations for the additional SIB1-PDCCH are obtained based on one or more offsets.

[0019] Each of the one or more offsets includes at least one of a time-domain offset and a frequency-domain offset.

[0020] In conjunction with the first aspect and its possible implementations, the total number of symbols occupied by the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of symbols occupied by the first SIB1-PDCCH in the time domain, and the number of resource blocks (RBs) occupied in the frequency domain is greater than or equal to the number of RBs occupied by the first SIB1-PDCCH in the frequency domain; or, the total number of RBs occupied in the frequency domain of the time-frequency resource locations occupied by the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of RBs occupied by the first SIB1-PDCCH in the frequency domain, and the number of symbols occupied in the time domain is greater than or equal to the number of symbols occupied by the first SIB1-PDCCH in the time domain.

[0021] The time-domain resources occupied by the first SIB1-PDCCH and the additional SIB1-PDCCH are at least one of the symbols with index numbers 0 to 2.

[0022] Based on the above scheme, the problem of conflict between the additional SIB1-PDCCH time-frequency resource location and other resources (such as SIB1-PDSCH, DMRS, and the first SIB1-PDCCH) can be avoided, reducing unnecessary detection behavior of terminal equipment.

[0023] In conjunction with the first aspect and its possible implementations, the time-frequency resource location of the additional SIB1-PDCCH does not coincide with one or more of the time-frequency resource locations of the first SIB1-PDCCH, the time-frequency resource location of the synchronization signal block SSB, the time-frequency resource location of the physical downlink data channel SIB1-PDSCH of system message block 1, and the time-frequency resource location of the demodulation reference signal SIB1-PDSCH DMRS of the physical downlink data channel of system message block 1.

[0024] In conjunction with the first aspect and its possible implementation, when there are multiple offsets, the terminal device detects multiple time-frequency resource locations of the additional SIB1-PDCCH indicated by the multiple offsets, and stops after detecting the additional SIB1-PDCCH.

[0025] Based on the above scheme, the protocol can predefine multiple offsets. The terminal device can perform blind detection on the time-frequency resource locations of multiple additional SIB1-PDCCHs indicated by these offsets, assuming that only one of the multiple additional SIB1-PDCCH time-frequency resources corresponding to each offset is being transmitted. The flexible configuration of multiple offsets increases the probability of the terminal device detecting additional SIB1-PDCCHs. For example, if a candidate time-frequency location of an additional SIB1-PDCCH indicated by a certain offset is not detected, other candidate time-frequency locations indicated by other offsets can still be detected. Furthermore, multiple offset indications also improve the flexibility of network devices in sending additional SIB1-PDCCHs.

[0026] In conjunction with the first aspect mentioned above and its possible implementation methods, the first indication information is carried in the broadcast channel PBCH.

[0027] In conjunction with the first aspect described above and its possible implementations, the first indication information is carried in a specific SSB. That is, the terminal device receives a specific SSB signal, in which the SSB signal carries the first indication information.

[0028] For example, the specific SSB signal carries first indication information, which indicates the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCCH. The indication method of the time-domain resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH can be the same as the indication method of the first SIB1-PDCCH in protocol 38.213. For example, the first indication information is an index of the control resource set and the search space, and the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH are obtained from the specific configuration information indicated by the index.

[0029] In conjunction with the first aspect described above and its possible implementations, this specific SSB signal includes at least one of the following:

[0030] The main synchronization signal of a specific sequence, the auxiliary synchronization signal of a specific sequence, the PBCH demodulation reference signal of a specific sequence, the special SSB structure, the time and frequency position of the special SSB, the synchronization signal SS with a specific frequency offset, and the PBCH with a specific frequency offset.

[0031] In conjunction with the first aspect and its possible implementation, if the candidate time-frequency resource location of the additional SIB1-PDCCH coincides with one of the following: the candidate time-frequency resource location of the first SIB1-PDCCH, the time-frequency resource location of the synchronization signal block SSB, the time-frequency resource location of the physical downlink data channel SIB1-PDSCH of system message block 1, or the time-frequency resource location of the demodulation reference signal SIB1-PDSCH DMRS of the physical downlink data channel of system message block 1, the terminal device does not detect the additional SIB1-PDCCH at the time-frequency resource location of the additional SIB1-PDCCH.

[0032] Based on the above scheme, if the time-frequency resource location of the additional SIB1-PDCCH coincides with one of the above resource locations, the terminal device assumes that no additional SIB1-PDCCH is transmitted at the time-frequency resource location of the additional SIB1-PDCCH.

[0033] Combining the first aspect mentioned above and its possible implementations, the starting position of the frequency domain resources of the additional SIB1-PDCCH is the same as the starting position of the frequency domain resources of the SSB corresponding to the first SIB1-PDCCH.

[0034] Based on the above scheme, the terminal device can determine the time and frequency resource location of the additional SIB1-PDCCH according to the location relationship between the additional SIB1-PDCCH and the SSB time and frequency resources.

[0035] In conjunction with the first aspect mentioned above and its possible implementations, the additional SIB1-PDCCH is transmitted by default in a predetermined frequency band or frequency point.

[0036] Based on the above scheme, in scenarios where SIB1-PDCCH coverage is severely insufficient (e.g., higher frequency band 6GHz or more distant cell coverage), the default transmission of additional SIB1-PDCCH effectively improves SIB1-PDCCH coverage without requiring additional signaling overhead.

[0037] In conjunction with the first aspect described above and its possible implementations, the method further includes: obtaining second indication information, which is used to indicate whether the additional SIB1-PDCCH is transmitted.

[0038] Based on the above scheme, the dynamic indication of whether the additional SIB1-PDCCH is transmitted is achieved by using the second indication information, which helps to reduce the power consumption of the terminal equipment and improve the detection efficiency.

[0039] In conjunction with the first aspect and its possible implementation methods, the second instruction information is carried in the PBCH.

[0040] In conjunction with the first aspect and its possible implementation, the first SIB1-PDCCH carries second indication information, which specifically indicates whether the additional SIB1-PDCCH corresponding to the first SIB1-PDCCH is transmitted; or whether the additional SIB1-PDCCH corresponding to the first SIB1-PDCCH of all SSBs is transmitted; or whether the additional SIB1-PDCCH is transmitted within a preset time unit.

[0041] Combining the first aspect mentioned above and its possible implementations, a specific SSB signal is received, and an additional SIB1-PDCCH is used to determine the transmission.

[0042] In the first aspect and its possible implementations, the additional SIB1-PDCCH has the same properties as the first SIB1-PDCCH.

[0043] One possible implementation is that the additional SIB1-PDCCH can be demodulated independently and carries corresponding scheduling information with the first SIB1-PDCCH. The corresponding scheduling information includes one or more of the following: frequency domain resources of the physical downlink shared channel PDSCH, time domain resources of the PDSCH, code rate and modulation order of the same PDSCH, and redundant version of the PDSCH.

[0044] The terminal device may assume that the demodulation reference signal sequence of the additional SIB1-PDCCH is the same as that of the first SIB1-PDCCH; the terminal device may also assume that the additional SIB1-PDCCH uses the same precoding as the first SIB1-PDCCH.

[0045] Based on the above scheme, it is beneficial to perform combined detection of the additional SIB1-PDCCH and the first SIB1-PDCCH.

[0046] Alternatively, the temporary radio network identifier (SI-RNTI) of the first system information can be used to verify the additional SIB1-PDCCH; or, the additional SIB1-PDCCH can be verified using the second SI-RNTI, which is generated based on the cell identifier.

[0047] Another possible implementation is that the additional SIB1-PDCCH serves as a supplementary resource to the first SIB1-PDCCH, cannot be demodulated independently, and shares the scheduling information carried by the first SIB1-PDCCH with it. In this configuration, the first SIB1-PDCCH and the additional SIB1-PDCCH are rate-matched as a whole.

[0048] Based on the above scheme, the additional SIB1-PDCCH is a supplementary resource to the first SIB1-PDCCH. For scenarios where it is not necessary to fully extend the first SIB1-PDCCH, the resource overhead configuration is more flexible and the robustness of the SIB1-PDCCH can be improved.

[0049] Furthermore, the additional SIB1-PDCCH may have the same detection period as the first SIB1-PDCCH; or, the PBCH or the first SIB1-PDCCH may carry third indication information, which is used to indicate the detection period of the additional SIB1-PDCCH. For example, the detection period is 20ms*k, where k is an integer greater than 1, such as k = 2, 4, 8, 16, 32, 64, etc.; or k is a number greater than 0 and less than 1, such as k = 1 / 2, 1 / 4, 1 / 8, 1 / 10, 1 / 20, 1 / 40, etc.

[0050] Based on the above scheme, the detection period of the additional SIB1-PDCCH is less than or equal to the detection period of the first SIB1-PDCCH. The additional SIB1-PDCCH can be received within the detection period of the first SIB1-PDCCH. That is, the first SIB1-PDCCH and the additional SIB1-PDCCH can be detected within one detection period. The first SIB1-PDCCH and the additional SIB1-PDCCH are jointly demodulated to improve the coverage of SIB1-PDCCH. In addition, the detection period of the additional SIB1-PDCCH is an integer multiple of the detection period of the first SIB1-PDCCH, such as 40ms, 60ms, etc., which can improve the coverage of SIB1-PDCCH to a certain extent and save signaling overhead.

[0051] Furthermore, the additional SIB1-PDCCH and the first SIB1-PDCCH have a quasi-co-addressable QCL relationship; or

[0052] The additional SIB1-PDCCH and the SSB corresponding to the first SIB1-PDCCH are QCL related; or

[0053] The additional SIB1-PDCCH and the specific SSB signal have a QCL relationship.

[0054] Based on the above scheme, for systems where network devices use beam transmission or terminal devices need to select a beam for reception, according to the above quasi-co-location relationship, the terminal device can use the receiving beam that receives the first SIB1-PDCCH to receive the additional SIB1-PDCCH; or use the receiving beam that receives the SSB corresponding to the first SIB1-PDCCH to receive the additional SIB1-PDCCH; or use the receiving beam that receives a specific SSB to receive the additional SIB1-PDCCH.

[0055] Secondly, this application provides a physical downlink control channel transmission method, the method comprising: a network device determining the time-frequency resource locations of the physical downlink control channel SIB1-PDCCH and the supplementary SIB1-PDCCH of a first system information block 1; and sending first indication information, the first indication information being used to indicate the time-frequency resource locations of the first SIB1-PDCCH and the supplementary SIB1-PDCCH.

[0056] In conjunction with the second aspect above, in one possible implementation, the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH include: the time-frequency resource location of the first SIB1-PDCCH and the time-frequency resource location of the additional SIB1-PDCCH; or the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH.

[0057] In conjunction with the second aspect described above and its possible implementations, the first indication information includes one or more offsets, which are used to indicate the offset of the time-frequency resource location of the additional SIB1-PDCCH relative to the time-frequency resource location of the first SIB1-PDCCH; or

[0058] This offset is used to indicate the offset of the time-frequency resource location of the additional SIB1-PDCCH relative to the time-frequency resource location of the synchronization signal block SSB.

[0059] In conjunction with the second aspect and its possible implementations, the number of symbols occupied in the time domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of symbols occupied in the time domain of the first SIB1-PDCCH, and the number of resource blocks (RBs) occupied in the frequency domain is greater than or equal to the number of RBs occupied in the frequency domain of the first SIB1-PDCCH; or, the number of RBs occupied in the frequency domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of RBs occupied in the frequency domain of the first SIB1-PDCCH, and the number of symbols occupied in the time domain is greater than or equal to the number of symbols occupied in the time domain of the first SIB1-PDCCH.

[0060] In conjunction with the second aspect described above and its possible implementations, the time-domain resources occupied by the first SIB1-PDCCH and the additional SIB1-PDCCH as a whole are at least one of the symbols with index numbers 0 to 2.

[0061] In conjunction with the second aspect mentioned above and its possible implementation methods, the physical broadcast channel PBCH carries the first indication information.

[0062] In conjunction with the second aspect described above and its possible implementations, the network device sends a specific SSB signal, which carries first indication information.

[0063] In conjunction with the second aspect described above and its possible implementations, this specific SSB signal includes at least one of the following:

[0064] The main synchronization signal of a specific sequence, the auxiliary synchronization signal of a specific sequence, the PBCH demodulation reference signal of a specific sequence, the special SSB structure, the time and frequency position of the special SSB, the synchronization signal SS with a specific frequency offset, and the PBCH with a specific frequency offset.

[0065] In conjunction with the second aspect above and its possible implementation, the starting position of the frequency domain resources of the additional SIB1-PDCCH is the same as the starting position of the frequency domain resources of the SSB corresponding to the first SIB1-PDCCH, or the starting position of the frequency domain resources of the additional SIB1-PDCCH is the same as the starting position of the frequency domain resources corresponding to the specific SSB signal.

[0066] In conjunction with the second aspect mentioned above and its possible implementations, the additional SIB1-PDCCH is transmitted by default in a predetermined frequency band or frequency point.

[0067] In conjunction with the second aspect described above and its possible implementations, the network device sends a second indication message, which is used to indicate whether the additional SIB1-PDCCH should be transmitted.

[0068] In conjunction with the second aspect mentioned above and its possible implementation methods, the PBCH carries the second instruction information.

[0069] In conjunction with the second aspect and its possible implementation, the first SIB1-PDCCH carries second indication information, which specifically indicates whether the additional SIB1-PDCCH corresponding to the first SIB1-PDCCH is transmitted; or whether the additional SIB1-PDCCH corresponding to the first SIB1-PDCCH of all SSBs is transmitted; or whether the additional SIB1-PDCCH is transmitted within a preset time unit.

[0070] Combining the second aspect mentioned above and its possible implementations, the network device sends a specific SSB signal, with an additional SIB1-PDCCH to determine the transmission.

[0071] In the second aspect and its possible implementation, the additional SIB1-PDCCH has the same properties as the first SIB1-PDCCH.

[0072] One possible implementation is that the additional SIB1-PDCCH can be demodulated independently and carries corresponding scheduling information along with the first SIB1-PDCCH. This corresponding scheduling information includes one or more of the following: frequency domain resources of the physical downlink shared channel PDSCH, time domain resources of the PDSCH, code rate and modulation order of the PDSCH, and redundant version of the PDSCH.

[0073] The demodulation reference signal sequence of the additional SIB1-PDCCH can be the same as that of the first SIB1-PDCCH; the precoding used by the additional SIB1-PDCCH and the first SIB1-PDCCH can be the same.

[0074] Alternatively, the additional SIB1-PDCCH can be verified using the Radio Network Temporary Identifier (SI-RNTI) of the first system information; or, the additional SIB1-PDCCH can be verified using the second SI-RNTI, which is generated based on the cell identifier.

[0075] Optionally, the supplementary SIB1-PDCCH serves as a resource to complement the first SIB1-PDCCH, cannot be demodulated independently, and shares the scheduling information carried by the first SIB1-PDCCH with it. The first SIB1-PDCCH and the supplementary SIB1-PDCCH are rate-matched as a whole.

[0076] Based on the above scheme, the additional SIB1-PDCCH is a supplementary resource to the first SIB1-PDCCH. For scenarios where it is not necessary to fully extend the first SIB1-PDCCH, the resource overhead configuration is more flexible.

[0077] Furthermore, the additional SIB1-PDCCH may have the same transmission period as the first SIB1-PDCCH; or, the PBCH or the first SIB1-PDCCH may carry third indication information, which is used to indicate the transmission period of the additional SIB1-PDCCH. For example, the transmission period is 20ms*k, where k is an integer greater than 1, such as k = 2, 4, 8, 16, 32, 64, etc.; or k is a number greater than 0 and less than 1, such as k = 1 / 2, 1 / 4, 1 / 8, 1 / 10, 1 / 20, 1 / 40, etc.

[0078] Furthermore, the additional SIB1-PDCCH and the first SIB1-PDCCH have a quasi-co-addressable QCL relationship; or

[0079] The additional SIB1-PDCCH and the SSB corresponding to the first SIB1-PDCCH are QCL related; or

[0080] The additional SIB1-PDCCH and the specific SSB signal have a QCL relationship.

[0081] For the beneficial effects of the various implementation methods provided in the second aspect of the embodiments of this application, please refer to the beneficial effects of the first aspect and any possible implementation method of the first aspect, which will not be repeated here.

[0082] Thirdly, this application provides a terminal device for executing the method in any possible implementation of the first aspect described above. The terminal device can be a terminal device in any possible implementation of the first aspect, or a module applied in a terminal device, such as a chip or chip system. The terminal device includes modules, units, or means corresponding to the method executed by the terminal device in any possible implementation of the first aspect. These modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the functions performed by the terminal device in any possible implementation of the first aspect.

[0083] In conjunction with the third aspect, one possible implementation is that the terminal device includes a transceiver unit and a processing unit. The transceiver unit is used to acquire first indication information, which is used to indicate the time and frequency resource locations of the physical downlink control channel SIB1-PDCCH and the supplementary SIB1-PDCCH of the first system information block 1.

[0084] The processing unit is configured to determine the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH based on the first indication information.

[0085] In conjunction with one possible implementation of the third aspect described above, the processing unit is further configured to detect the first SIB1-PDCCH and the additional SIB1-PDCCH according to the first indication information; the processing unit is further configured to obtain system message block 1SIB1 according to the detected first SIB1-PDCCH and the additional SIB1-PDCCH.

[0086] In conjunction with one possible implementation of the third aspect above, the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH include: the time-frequency resource location of the first SIB1-PDCCH and the time-frequency resource location of the additional SIB1-PDCCH; or, the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH.

[0087] In conjunction with one possible implementation of the third aspect above, the first indication information includes one or more offsets, which are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the first SIB1-PDCCH; or the offsets are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the synchronization signal block SSB.

[0088] The processing unit obtains one or more time-frequency resource locations for the additional SIB1-PDCCH based on one or more offsets.

[0089] In one possible implementation of the third aspect mentioned above, the number of symbols occupied in the time domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of symbols occupied in the time domain of the first SIB1-PDCCH, and the number of resource blocks (RBs) occupied in the frequency domain is greater than or equal to the number of RBs occupied in the frequency domain of the first SIB1-PDCCH; or, the number of RBs occupied in the frequency domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of RBs occupied in the frequency domain of the first SIB1-PDCCH, and the number of symbols occupied in the time domain is greater than or equal to the number of symbols occupied in the time domain of the first SIB1-PDCCH.

[0090] In conjunction with one possible implementation of the third aspect above, the time-domain resources of the first SIB1-PDCCH and the additional SIB1-PDCCH as a whole are at least one of the symbols with index numbers 0 to 2.

[0091] In conjunction with one possible implementation of the third aspect mentioned above, the first indication information is carried in the physical broadcast channel PBCH.

[0092] In one possible implementation of the third aspect mentioned above, the transceiver unit receives a specific SSB signal, which carries first indication information.

[0093] In conjunction with one possible implementation of the third aspect described above, a specific SSB signal includes at least one of the following:

[0094] The main synchronization signal of a specific sequence, the auxiliary synchronization signal of a specific sequence, the PBCH demodulation reference signal of a specific sequence, the special SSB structure, the time and frequency position of the special SSB, the synchronization signal SS with a specific frequency offset, and the PBCH with a specific frequency offset.

[0095] In conjunction with one possible implementation of the third aspect mentioned above, the additional SIB1-PDCCH is transmitted by default in a predetermined frequency band or frequency point.

[0096] In one possible implementation of the third aspect described above, the transceiver unit obtains second indication information, which is used to indicate whether the additional SIB1-PDCCH is transmitted.

[0097] In the third aspect and its possible implementation, the additional SIB1-PDCCH has the same properties as the first SIB1-PDCCH.

[0098] One possible implementation is that the additional SIB1-PDCCH can be demodulated independently and carries corresponding scheduling information along with the first SIB1-PDCCH. This corresponding scheduling information includes one or more of the following: frequency domain resources of the physical downlink shared channel PDSCH, time domain resources of the PDSCH, code rate and modulation order of the PDSCH, and redundant version of the PDSCH.

[0099] The terminal device may assume that the demodulation reference signal sequence of the additional SIB1-PDCCH is the same as that of the first SIB1-PDCCH; the terminal device may also assume that the additional SIB1-PDCCH uses the same precoding as the first SIB1-PDCCH.

[0100] Alternatively, the temporary radio network identifier (SI-RNTI) of the first system information can be used to verify the additional SIB1-PDCCH; or, the additional SIB1-PDCCH can be verified using the second SI-RNTI, which is generated based on the cell identifier.

[0101] Optionally, the supplementary SIB1-PDCCH serves as a resource to complement the first SIB1-PDCCH, cannot be demodulated independently, and shares the scheduling information carried by the first SIB1-PDCCH with it. The first SIB1-PDCCH and the supplementary SIB1-PDCCH are rate-matched as a whole.

[0102] Furthermore, the additional SIB1-PDCCH may have the same detection period as the first SIB1-PDCCH; or, the PBCH or the first SIB1-PDCCH may carry third indication information, which is used to indicate the detection period of the additional SIB1-PDCCH. For example, the detection period is 20ms*k, where k is an integer greater than 1, such as k = 2, 4, 8, 16, 32, 64, etc.; or k is a number greater than 0 and less than 1, such as k = 1 / 2, 1 / 4, 1 / 8, 1 / 10, 1 / 20, 1 / 40, etc.

[0103] Furthermore, the additional SIB1-PDCCH and the first SIB1-PDCCH have a quasi-co-addressable QCL relationship; or

[0104] The additional SIB1-PDCCH and the SSB corresponding to the first SIB1-PDCCH are QCL related; or

[0105] The additional SIB1-PDCCH and the specific SSB signal have a QCL relationship.

[0106] In conjunction with the third aspect, another possible implementation of the terminal device includes at least one processor and a transceiver, and optionally also includes a memory coupled to or separate from the processor. The transceiver is used for sending and receiving data, and for communicating and interacting with other devices in the communication system. The memory is used to store computer programs, and the processor is configured to support the terminal device in performing the corresponding functions of the terminal device in the first aspect and its possible implementations described above.

[0107] It should be noted that the beneficial effects of the various implementation methods of the terminal device provided in the third aspect of this application can be referred to the beneficial effects of the first aspect and any possible implementation method of the first aspect, and will not be repeated here.

[0108] Fourthly, this application provides a network device for executing the method in any possible implementation of the second aspect described above. The network device can be a network device in any possible implementation of the second aspect, or a module applied in a network device, such as a chip or chip system. The network device includes modules, units, or means corresponding to the method executed by the network device in any possible implementation of the second aspect. These modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the functions performed by the network device in any possible implementation of the second aspect.

[0109] In conjunction with the fourth aspect, one possible implementation is that the network device includes a transceiver unit and a processing unit. The processing unit is used to determine the time-frequency resource locations of the physical downlink control channel SIB1-PDCCH and the supplementary SIB1-PDCCH of the first system information block 1.

[0110] The transceiver unit is used to send first indication information, which is used to indicate the time and frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH.

[0111] In conjunction with one possible implementation of the fourth aspect, the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH include: the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH; or the overall time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH.

[0112] In conjunction with one possible implementation of the fourth aspect, the first indication information includes one or more offsets, which are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the first SIB1-PDCCH; or the offsets are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the synchronization signal block SSB.

[0113] In conjunction with one possible implementation of the fourth aspect, the number of symbols occupied in the time domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of symbols occupied in the time domain of the first SIB1-PDCCH, and the number of resource blocks (RBs) occupied in the frequency domain is greater than or equal to the number of RBs occupied in the frequency domain of the first SIB1-PDCCH; or, the number of RBs occupied in the frequency domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of RBs occupied in the frequency domain of the first SIB1-PDCCH, and the number of symbols occupied in the time domain is greater than or equal to the number of symbols occupied in the time domain of the first SIB1-PDCCH.

[0114] In conjunction with one possible implementation of the fourth aspect, the time-domain resources of the first SIB1-PDCCH and the additional SIB1-PDCCH as a whole are at least one of the symbols with index numbers 0 to 2.

[0115] In conjunction with one possible implementation of the fourth aspect, the physical broadcast channel PBCH carries the first indication information.

[0116] In conjunction with one possible implementation of the fourth aspect, the transceiver unit sends a specific SSB signal, which carries first indication information.

[0117] In conjunction with one possible implementation of the fourth aspect, a specific SSB signal includes at least one of the following:

[0118] The main synchronization signal of a specific sequence, the auxiliary synchronization signal of a specific sequence, the PBCH demodulation reference signal of a specific sequence, the special SSB structure, the time and frequency position of the special SSB, the synchronization signal SS with a specific frequency offset, and the PBCH with a specific frequency offset.

[0119] In conjunction with one possible implementation of the fourth aspect, the SIB1-PDCCH is additionally transmitted by default in a predetermined frequency band or frequency point.

[0120] In conjunction with one possible implementation of the fourth aspect, the transceiver unit obtains second indication information, which is used to indicate whether the additional SIB1-PDCCH is transmitted.

[0121] In the fourth aspect and its possible implementation, the additional SIB1-PDCCH has the same properties as the first SIB1-PDCCH.

[0122] One possible implementation is that the additional SIB1-PDCCH can be demodulated independently and carries corresponding scheduling information along with the first SIB1-PDCCH. This corresponding scheduling information includes one or more of the following: frequency domain resources of the physical downlink shared channel PDSCH, time domain resources of the PDSCH, code rate and modulation order of the PDSCH, and redundant version of the PDSCH.

[0123] The demodulation reference signal sequence of the additional SIB1-PDCCH can be the same as that of the first SIB1-PDCCH; the precoding used by the additional SIB1-PDCCH and the first SIB1-PDCCH can also be the same.

[0124] Alternatively, the temporary radio network identifier (SI-RNTI) of the first system information can be used to verify the additional SIB1-PDCCH; or, the additional SIB1-PDCCH can be verified using the second SI-RNTI, which is generated based on the cell identifier.

[0125] Optionally, the supplementary SIB1-PDCCH serves as a resource to complement the first SIB1-PDCCH, cannot be demodulated independently, and shares the scheduling information carried by the first SIB1-PDCCH with it. The first SIB1-PDCCH and the supplementary SIB1-PDCCH are rate-matched as a whole.

[0126] Furthermore, the additional SIB1-PDCCH may have the same transmission period as the first SIB1-PDCCH; or, the PBCH or the first SIB1-PDCCH may carry third indication information, which is used to indicate the transmission period of the additional SIB1-PDCCH. For example, the transmission period is 20ms*k, where k is an integer greater than 1, such as k = 2, 4, 8, 16, 32, 64, etc.; or k is a number greater than 0 and less than 1, such as k = 1 / 2, 1 / 4, 1 / 8, 1 / 10, 1 / 20, 1 / 40, etc.

[0127] Furthermore, the additional SIB1-PDCCH and the first SIB1-PDCCH have a quasi-co-addressable QCL relationship; or

[0128] The additional SIB1-PDCCH and the SSB corresponding to the first SIB1-PDCCH are QCL related; or

[0129] The additional SIB1-PDCCH and the specific SSB signal have a QCL relationship.

[0130] In conjunction with the fourth aspect, another possible implementation of the network device includes at least one processor and a transceiver, optionally also including a memory coupled to or separate from the processor. The transceiver is used for sending and receiving data, and for communicating and interacting with other devices in the communication system. The memory is used to store computer programs, and the processor is configured to support the network device in performing the corresponding functions of the network device in the second aspect and its possible implementations described above.

[0131] It should be noted that the beneficial effects of the various implementations of the network device provided in the fourth aspect of this application can be found in the second aspect and the beneficial effects of any possible implementation of the second aspect, and will not be repeated here.

[0132] Fifthly, this application provides a chip system including logic circuits and input / output interfaces. The input / output interfaces are used for inputting or outputting signals or data, and the logic circuits are used to execute the first aspect described above and any possible implementation method thereof.

[0133] In a sixth aspect, this application provides a chip system including logic circuitry and an input / output interface, wherein the input / output interface is used for inputting or outputting signals or data; and the logic circuitry is used to execute the second aspect described above and any possible implementation thereof.

[0134] In a seventh aspect, this application provides a computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor, causing some or all of the steps of the first to second aspects and any possible implementation thereof to be performed.

[0135] Eighthly, this application provides a computer program product including executable instructions, which, when run on a computer, causes the methods in the first to second aspects and any one of them and their corresponding possible implementations to be executed.

[0136] Ninthly, this application also provides a communication device, which can exist in the form of a chip. The device includes a processor and may also include a memory coupled to the processor to store necessary programs (instructions) and data. The processor executes the computer program stored in the memory to support the communication device in performing the methods described in the first to second aspects and any one of them, and their corresponding possible implementations. Optionally, the memory may be located within the processor as internal storage, or it may be located outside the processor but coupled to it as external storage.

[0137] In a tenth aspect, this application also provides a communication system, which includes a terminal device and a network device, wherein the terminal device is used to perform the first aspect described above and any possible implementation thereof, and the network device is used to perform the second aspect described above and any possible implementation thereof. Attached Figure Description

[0138] Figure 1A This application provides a schematic diagram of the structure of a communication system according to an embodiment of the present application.

[0139] Figure 1B This is a schematic diagram of another communication system provided in an embodiment of this application;

[0140] Figure 1C This is a schematic diagram of another communication system provided in an embodiment of this application;

[0141] Figure 2 A flowchart illustrating a physical downlink control channel transmission method provided in an embodiment of this application;

[0142] Figures 3A-3L A schematic diagram of the time-frequency resource distribution of the additional SIB1-PDCCH and the first SIB-PDCCH provided for embodiments of this application;

[0143] Figure 4 A schematic diagram of extended SIB1-PDCCH rate matching provided for an embodiment of this application;

[0144] Figure 5A This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0145] Figure 5BThis is a schematic diagram of another communication device provided in an embodiment of this application;

[0146] Figure 6 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this application;

[0147] Figure 7 This application provides a schematic diagram of the structure of a network device according to an embodiment of the present application.

[0148] Figure 8 This is a schematic diagram of the structure of a chip provided in an embodiment of this application. Detailed Implementation

[0149] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0150] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0151] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0152] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The characters "three" generally indicate that the preceding and following related objects have an "or" relationship.

[0153] First, the communication system involved in the embodiments of this application will be introduced. Please refer to Figure 1, which is a framework diagram of a communication system provided in an embodiment of this application. The communication method provided in this application is applicable to the communication system shown in Figure 1, such as Long Term Evolution (LTE) systems, 5G NR systems, etc., and can also be other future communication systems, which are not limited here. Figure 1A and 1BAs illustrated, exemplarily, the communication system involved in this application embodiment includes network devices and terminal devices, wherein... Figure 1A The communication system in the system includes a single network device and multiple terminal devices. A single network device can transmit data or control signaling to one or more terminal devices. Figure 1B The communication system includes multiple network devices and a single terminal device. Multiple network devices can simultaneously transmit data or control signaling to a single terminal device. It should be noted that in practical applications, the communication system may also include other communication network elements, and the number of terminal devices and network devices is determined by the specific scenario. Figure 1A and Figure 1B This is just an example and does not constitute a limitation.

[0154] For example, Figure 1C for Figure 1A or Figure 1B This is one implementation of communication between a terminal device and a network device. The terminal device 10 includes a processor 101, a memory 102, and a transceiver 103. The transceiver 103 includes a transmitter 1031, a receiver 1032, and an antenna 1033. The network device 20 also includes a processor 201, a memory 202, and a transceiver 203. The transceiver 203 includes a transmitter 2031 and a receiver 2032. Optionally, the network device 20 further includes an antenna 2033, which can be integrated into the network device 20, or it can be a remote antenna or a distributed antenna. The receiver 1032 can be used to receive information through the antenna 1033, and the transmitter 1031 can be used to send information to the network device 20 through the antenna 1033. The transmitter 2031 can be used to send information to the terminal device 10 through the antenna 2033, and the receiver 2032 can be used to receive information sent by the terminal device 10 through the antenna 2033.

[0155] The network device can be a base station, an access point, or a device in the access network that communicates with the wireless terminal device over one or more sectors on the air interface. The base station can be used to convert received air frames to and from IP packets, and acts as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) network. The base station can also coordinate the attribute management of the air interface. The base station can be an evolved Node B (eNB or eNodeB) in Long Term Evolution (LTE), a relay station or access point, a base station (gNB) in a 5G network, or an integrated access and backhaul node (IAB) node, etc., and is not limited thereto.

[0156] The terminal device involved in the embodiments of this application is a user-side entity used to receive or transmit signals. The terminal device can be a device that provides voice and / or data connectivity to the user, such as a handheld device with wireless connectivity or a processing device connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. The terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) communication terminal equipment, vehicle-to-everything (V2X) terminal equipment, machine-to-machine / machine-type communications (M2M / MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user device, etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal devices, portable, pocket-sized, handheld, or computer-embedded mobile devices, etc. Examples include personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, and personal digital assistants (PDAs). It also includes limited devices, such as those with low power consumption, limited storage capacity, or limited computing power. Examples include information sensing devices such as barcode scanners, radio frequency identification (RFID), sensors, global positioning systems (GPS), and laser scanners.

[0157] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices or smart wearable devices, are a general term for devices developed by applying wearable technology to realize intelligent functionality in everyday wear, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on only one type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.

[0158] The various terminal devices described above, if located in a vehicle (e.g., placed inside or installed inside a vehicle), can be considered as vehicle-mounted terminal devices, also known as on-board units (OBUs).

[0159] In NR (Non-Responsive Networking), the primary synchronization signal (PSS), secondary synchronization signal (SSS), and physical broadcast channel (PBCH) constitute the synchronization signal / broadcast channel block (SS / PBCH block). The synchronization signal / broadcast block is sometimes simply referred to as the synchronization signal block (SSB). The SSB is a channel that performs broadcast functions and is used to complete the initial access procedure. The broadcast channels involved in the initial access procedure also include the physical downlink control channel (PDCCH) and the physical downlink shared channel (PDSCH) used for broadcasting. The broadcast PDCCH refers to the control channel carrying the scheduling information for broadcast information, denoted as SIB1-PDCCH. Broadcast information mainly refers to system information, such as the system information block (SIB). The scheduling information of the broadcast information is used to instruct the terminal equipment on which resources to receive SIB1 data information; the PDSCH used for broadcasting refers to the data channel carrying the broadcast information, denoted as SIB1-PDSCH. The broadcast channel involved in the initial access process is characterized by carrying broadcast scheduling information or broadcast information, and is not a dedicated channel.

[0160] The initial access process of the terminal device generally includes the following steps: (1) Blindly detect the PSS / SSS, synchronize cell timing, and obtain the cell identifier; (2) Demodulate the Master Information Block (MIB) carried in the Physical Broadcast Channel (PBCH). The MIB message contains the system frame number, subcarrier spacing, and SIB1-PDCCH configuration information (control resource set indication and search space indication); (3) Detect the DCI according to the set indicated by the SIB1-PDCCH configuration information and the search space. The DCI is scrambled by SI-RNTI and indicates the scheduling information of SIB1 information: frequency domain resources, time domain resource allocation, modulation and coding scheme, redundancy version, etc.; (4) Receive the SIB1 message according to the scheduling information. The SIB1 contains cell information, specifically including uplink and downlink bandwidth resource information, cell SSB resources, etc.

[0161] by Figure 1AFor example, during the initial access process, terminal device 102A needs to receive the System Message Block (SIB1) sent by network device 101A. SIB1 contains cell information, specifically uplink and downlink bandwidth resource information, cell synchronization signal block (SSB) resources, etc. After obtaining this information, terminal device 102A completes the initial access process. During this process, terminal device 102A needs to receive SIB1 at the appropriate location based on scheduling information. The scheduling information of SIB1 is carried in the SIB1-PDCCH. Therefore, to successfully complete the initial access, terminal device 102A needs to first receive the broadcast SIB1-PDCCH. Currently, the coverage capability design of SIB1-PDCCH in the 3.5GHz propagation characteristics has reached its limit. For some new frequency bands, such as the higher frequency band 6GHz, there will be greater path loss, making it difficult for SIB1-PDCCH to achieve the same coverage range. Insufficient coverage of SIB1-PDCCH causes terminal device 102A to be unable to correctly demodulate the scheduling information carried in SIB1-PDCCH, thus failing to obtain the SIB1 message and consequently failing to complete the initial access process.

[0162] It should be noted that the insufficient SIB1-PDCCH coverage mentioned here can be understood as insufficient signal-to-noise ratio, that is, the SIB1-PDCCH signal is weak or greatly affected by noise.

[0163] To address the issue of insufficient SIB1-PDCCH coverage at higher frequency bands, this application provides a SIB1-PDCCH transmission method. This method primarily assists terminal devices in completing the initial access process at higher frequency bands by providing a supplementary SIB1-PDCCH, thereby improving the coverage capability of the SIB1-PDCCH during the initial access phase and further enabling coverage of more distant cells. Furthermore, the method also considers the forward compatibility of existing terminal devices with the method provided in this application during implementation.

[0164] It should be noted that the supplementary SIB1-PDCCH in this application embodiment serves as an additional or supplementary SIB1-PDCCH transmission resource to improve the robustness of the original SIB1-PDCCH. Here, the original SIB1-PDCCH refers to the SIB1-PDCCH specified in the 3GPP 38.213 protocol, and the supplementary SIB1-PDCCH refers to the supplementary SIB1-PDCCH. In the following description, the original SIB1-PDCCH is referred to as the first SIB1-PDCCH, and the supplementary SIB1-PDCCH is referred to as the supplementary SIB1-PDCCH; this is a consistent explanation and will not be repeated hereafter. Furthermore, the supplementary SIB1-PDCCH may also have other naming conventions, which are not limited in this application.

[0165] Those skilled in the art will understand that the supplementary SIB1-PDCCH is a supplement to the first SIB1-PDCCH, and the two are correlated. When the terminal device receives the supplementary SIB1-PDCCH and the first SIB1-PDCCH, they will be correlated and superimposed. However, noise is independent and can only be superimposed uncorrelatedly. Therefore, by adding the supplementary SIB1-PDCCH, the signal-to-noise ratio of the SIB1-PDCCH can be improved, which means improving the coverage capability of the SIB1-PDCCH.

[0166] It should also be noted that the resource block (RB) in this application embodiment is a frequency domain concept. For example, 12 subcarriers constitute 1 RB.

[0167] In addition, the time-frequency resource location of the first SIB1-PDCCH or the time-frequency resource location of the additional SIB1-PDCCH in the embodiments of this application can also be understood as the candidate time-frequency resource location of the first SIB1-PDCCH or the candidate time-frequency resource location of the additional SIB1-PDCCH, and the detection of SIB1-PDCCH can be understood as the blind detection specified in the existing protocol.

[0168] The physical downlink control channel transmission method provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0169] This application uses terminal devices and network devices as examples in its embodiments. It should be understood that this application can also be applied to chips on the terminal device side or chips on the network device side.

[0170] Figure 2 This application provides a flowchart illustrating a physical downlink control channel transmission method 200, which specifically includes:

[0171] S201. The network device determines the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH.

[0172] S202, the network device sends the first indication information, which is used to indicate the time and frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH.

[0173] Accordingly, the terminal device receives the first indication information sent by the network device. Optionally, the terminal device may also obtain the first indication information from other terminal devices, such as in a device-to-device (D2D) scenario, through a sidelink (SL) for information transmission. This application does not limit the method by which the terminal device obtains the first indication information.

[0174] The time-frequency resource locations of the first SIB1-PDCCH and the supplementary SIB1-PDCCH include: the time-frequency resource locations of the first SIB1-PDCCH and the supplementary SIB1-PDCCH; or the time-frequency resource locations of the first SIB1-PDCCH and the supplementary SIB1-PDCCH as a whole. It should be noted that the first SIB1-PDCCH and the supplementary SIB1-PDCCH as a whole can be considered as an extended SIB1-PDCCH. In this case, the distinction between the first SIB1-PDCCH and the supplementary SIB1-PDCCH can be disregarded, and they can be treated as a single unit. The following description of the first SIB1-PDCCH and the supplementary SIB1-PDCCH as a whole corresponds to the extended SIB1-PDCCH, and this will be used consistently here.

[0175] It should be noted that before the terminal device detects the first SIB1-PDCCH and the additional SIB1-PDCCH or extended SIB1-PDCCH according to the first indication information, it can first determine whether the additional SIB1-PDCCH or extended SIB1-PDCCH is being transmitted. This avoids the terminal device blindly detecting the additional SIB1-PDCCH or extended SIB1-PDCCH when it cannot determine whether the additional SIB1-PDCCH or extended SIB1-PDCCH is being transmitted, thereby increasing the power consumption of the terminal device. Specifically, embodiments of this application provide the following implementation methods for determining whether the additional SIB1-PDCCH or extended SIB1-PDCCH is being transmitted.

[0176] One possible implementation is that the protocol stipulates that SIB1-PDCCH or extended SIB1-PDCCH default transmissions will be added in certain systems or scenarios. For example, the protocol can be configured to add SIB1-PDCCH or extend SIB1-PDCCH default transmissions in certain frequency points (e.g., certain specific frequency bands, such as 6GHz).

[0177] In the above implementation, the protocol directly stipulates that in certain scenarios (such as coverage of more distant cells, greater path loss of new frequency bands) additional SIB1-PDCCH or extended SIB1-PDCCH default transmission will be added, for example, indicated by frequency point configuration, without generating additional signaling overhead.

[0178] Another possible implementation is that, in specific scenarios where additional SIB1-PDCCH or extended SIB1-PDCCH is transmitted by default without protocol agreement, the terminal device can first determine whether additional SIB1-PDCCH or extended SIB1-PDCCH is to be transmitted.

[0179] Optionally, step 201a is added before step 201: the network device sends second indication information, which is used to indicate whether the supplementary SIB1-PDCCH or extended SIB1-PDCCH is transmitted. Accordingly, the terminal device can directly receive the second indication information from the network device or obtain the second indication information from other terminal devices, and this application does not limit it.

[0180] One possible implementation is that the PBCH carries second indication information. For example, the last reserved or spare bit in the PBCH carries the second indication information, such as indicating whether the additional SIB1-PDCCH or extended SIB1-PDCCH is transmitted based on whether the last bit is 0 or 1, where 0 indicates no transmission and 1 indicates transmission; or 0 indicates transmission and 1 indicates no transmission.

[0181] Another possible implementation involves the first SIB1-PDCCH carrying second indication information. This second indication information specifically indicates whether the additional SIB1-PDCCH corresponding to the first SIB1-PDCCH is transmitted, or whether the additional SIB1-PDCCH corresponding to all SSBs is transmitted, or whether the additional SIB1-PDCCH will be transmitted within a preset time unit. Here, "all SSBs" can refer to the SSBs corresponding to the current period, a specified period, or all periods; the preset time unit is time-domain information, such as a frame, subframe, time slot, mini-time slot, or symbol.

[0182] Another possible implementation involves the terminal device receiving a specific signal from the network device indicating whether the additional SIB1-PDCCH or extended SIB1-PDCCH will be transmitted. If the terminal device receives this specific signal, it assumes that the additional SIB1-PDCCH or extended SIB1-PDCCH will be transmitted. For example, this specific signal could be a specific SSB signal, which may have one or more of the following characteristics: a primary synchronization signal (PSS) of a specific sequence, a secondary synchronization signal (SSS) of a specific sequence, a demodulation reference signal (DMRS) of a specific sequence of PBCH, a specific SSB structure, a specific SSB time-frequency position, a synchronization signal SS with a specific frequency offset, and a PBCH with a specific frequency offset.

[0183] Specifically, a specific sequence of PSS can be considered to be different from the PSS sequence in the SSB signal corresponding to the first SIB1-PDCCH, a specific sequence of SSS can be considered to be different from the SSS sequence in the SSB signal corresponding to the first SIB1-PDCCH, and a specific PBCH DMRS can be considered to be different from the PBCH DMRS sequence in the SSB signal corresponding to the first SIB1-PDCCH. For example, the specific sequences mentioned above can be generated through protocol-defined methods, such as cyclic shifting; special SSB structures, such as the SSB disabling PSS transmission and only transmitting SSS and / or PBCH; special SSB time-frequency positions, such as the SSB time-frequency position differing from the existing time-frequency position of the SSB corresponding to the first SIB1-PDCCH; and SS / PBCH with specific frequency offsets. For example, if the SSB obtained after a certain frequency offset of the SS and / or PBCH is not located in the synchronization grid or is not in the synchronization grid position specified in the protocol, the terminal device can consider that it has detected the SS / PBCH with specific frequency offsets, and will transmit the additional SIB1-PDCCH or extended SIB1-PDCCH.

[0184] In the above embodiments, the terminal device determines whether the additional SIB1-PDCCH or extended SIB1-PDCCH is transmitted by obtaining the second indication information. This indication method can realize dynamic indication of the additional SIB1-PDCCH or extended SIB1-PDCCH, reduce the power consumption of the terminal device, and improve the detection efficiency.

[0185] After the terminal device determines whether to transmit the additional SIB1-PDCCH or the extended SIB1-PDCCH, it can further determine the time-frequency resource location of the first SIB1-PDCCH and the time-frequency resource location of the additional SIB1-PDCCH, or the time-frequency resource location of the extended SIB1-PDCCH, based on the first indication information. Specifically, this can include the following implementation methods.

[0186] One possible implementation is that the first indication information includes one or more offsets, which indicate the offset of the time-frequency resource location of the additional SIB1-PDCCH relative to the time-frequency resource location of the first SIB1-PDCCH; or the offset indicates the offset of the time-frequency resource location of the additional SIB1-PDCCH relative to the time-frequency resource location of the synchronization signal block SSB. The terminal device obtains one or more time-frequency resource locations of the additional SIB1-PDCCH based on the one or more offsets.

[0187] In the above implementation, the time-frequency resource location of the additional SIB1-PDCCH is related to the time-frequency resource location of the first SIB1-PDCCH. Any one of the one or more offsets includes at least one of a time-domain offset value and a frequency-domain offset value. That is, the time-frequency resource location of the additional SIB1-PDCCH may be offset only in the time-domain resource, or only in the frequency-domain resource, or offset in both the time-domain and frequency-domain resources relative to the time-frequency resource location of the first SIB1-PDCCH. The specific offset magnitude is indicated by the offset value.

[0188] For example, the protocol can directly agree on one or more fixed offsets, each offset indicating the size of a specific offset, such as, but not limited to, an offset of X RBs or X subcarriers in the frequency domain; or an offset of Y symbols or Y slots in the time domain. Optionally, each offset indicates the offset value of the additional SIB1-PDCCH relative to the maximum or minimum index of the corresponding time and / or frequency domain resources of the first SIB1-PDCCH. For example, the frequency domain offset can be the offset value of the additional SIB1-PDCCH relative to the minimum RB index of the frequency domain resources occupied by the first SIB1-PDCCH or the offset value of the maximum RB index of the frequency domain resources occupied by the first SIB1-PDCCH; the time domain offset can be the offset value of the additional SIB1-PDCCH relative to the first symbol or the last symbol of the time domain resources occupied by the first SIB1-PDCCH.

[0189] It should be noted that the above offset method is only an example. In practice, the protocol can specify a variety of offset methods, not just offset values ​​relative to the minimum and maximum indices. This application does not limit this.

[0190] Another possible implementation involves associating the aforementioned one or more offsets with indication information of the time-frequency resource location of the first SIB1-PDCCH. The control resource set and search space configuration information are used to indicate the time-frequency resource location of the first SIB1-PDCCH. Further, the aforementioned one or more offsets can be offset values ​​from the indication information of the time-frequency resource location of the first SIB1-PDCCH. For example, the frequency domain offset included in the offsets can be an additional offset of X RBs based on the RB offset value indicated in the control resource set configuration information; the time domain offset can be an additional offset of Y symbols based on the first symbol index indicated in the search space configuration information.

[0191] Furthermore, when the first indication information includes multiple offsets, the terminal device can assume that among the multiple additional SIB1-PDCCH time-frequency resource locations corresponding to the multiple offsets, only one time-frequency resource location transmits the additional SIB1-PDCCH. The terminal device can acquire one usable additional SIB1-PDCCH at each of the multiple additional SIB1-PDCCH time-frequency resource locations. Multiple offsets ensure that even if the additional SIB1-PDCCH time-frequency resource location corresponding to a certain offset is occupied, there are still other optional time-frequency resource locations, thereby enhancing the coverage of the SIB1-PDCCH.

[0192] Another possible implementation involves the network device sending a specific signal, such as a specific SSB signal, which is then received by the terminal device. This specific signal carries or indicates the time-frequency resource location information of the supplementary SIB1-PDCCH and the first SIB1-PDCCH. Optionally, the indication of the time-domain resource location of the first SIB1-PDCCH and the supplementary SIB1-PDCCH in this specific signal can be the same as the indication of the first SIB1-PDCCH in protocol 38.213, for example, indicated by an index in the control resource set and search space configuration information.

[0193] It should be noted that the terminal device determines the time-frequency resource location of the additional SIB1-PDCCH based on one or more offsets. If the time-frequency resource location of the additional SIB1-PDCCH coincides with one of the following: the time-frequency resource location of the first SIB1-PDCCH, the time-frequency resource location of the SSB, the time-frequency resource location of the physical downlink data channel SIB1-PDSCH of system message block 1, or the time-domain resource location of the demodulation reference signal SIB1-PDSCH DMRS of the physical downlink data channel of system message block 1, the terminal device assumes that no additional SIB1-PDCCH is transmitted at the time-frequency resource location of the additional SIB1-PDCCH. This can also be understood as the terminal device not performing additional SIB1-PDCCH detection at the time-frequency resource location of the additional SIB1-PDCCH, and discarding the time-frequency resource location information of the additional SIB1-PDCCH. It should be noted that if the time-frequency resource location of the additional SIB1-PDCCH conflicts with one of the above resource locations, the terminal device should assume that the additional SIB1-PDCCH has not been transmitted. The time-frequency resource location of the additional SIB1-PDCCH may also conflict with multiple resource locations mentioned above.

[0194] In the above embodiments, the time-frequency position of the additional SIB1-PDCCH is indicated by one or more offsets, which is simple to implement and has relatively low signaling overhead.

[0195] One possible implementation is that the aforementioned offset can be pre-configured on the terminal device. That is, the protocol directly specifies the offset, and the terminal device does not need to obtain it from the network device or other devices. In other words, it does not need to indicate the offset through the first indication information. The terminal device can determine the time-frequency resource location of the additional SIB1-PDCCH based on the locally stored offset and the time-frequency resource location of the first SIB1-PDCCH.

[0196] Another possible implementation is that the first indication information directly carries or explicitly indicates one or more offsets. The terminal device receives the first indication information sent by the network device and determines the time-frequency resource location of the additional SIB1-PDCCH according to the offsets carried in the first indication information.

[0197] Another possible implementation is that the first indication information indirectly carries or implicitly indicates one or more offsets. For example, sub-configuration information of the first configuration information is determined based on the first indication information, and this sub-configuration information contains one or more offsets. The first configuration information contains multiple sub-configuration information entries. The first configuration information can be predefined or preconfigured, and the terminal device and network device store the first configuration information.

[0198] Specifically, the first configuration information mentioned above can be implemented in two ways.

[0199] One possible implementation is that the first configuration information includes the time-frequency resource location information of the first SIB1-PDCCH and the time-frequency resource location information of the supplementary SIB1-PDCCH. That is, the time-frequency resource location information of the first SIB1-PDCCH and the time-frequency resource location information of the supplementary SIB1-PDCCH are uniformly configured in the first configuration information. The first configuration information may include one or more of the following: the time-frequency location offset relationship between the supplementary SIB1-PDCCH and the first SIB1-PDCCH, the difference in the scheduling information carried by the supplementary SIB1-PDCCH and the first SIB1-PDCCH, the time-frequency resource allocation method of at least one of the first SIB1-PDCCH and the supplementary SIB1-PDCCH, the code rate of at least one of the first SIB1-PDCCH and the supplementary SIB1-PDCCH, the search space period of at least one of the first SIB1-PDCCH and the supplementary SIB1-PDCCH, and the number of search spaces per slot of at least one of the first SIB1-PDCCH and the supplementary SIB1-PDCCH.

[0200] Another possible implementation is that the first configuration information includes the time-frequency resource location information of the extended SIB1-PDCCH. Specifically, the first configuration information includes one or more of the following: scheduling information carried by the extended SIB1-PDCCH, time-frequency resource allocation method, code rate, search space period, and number of search spaces per time slot. It is important to understand that the time-frequency resource location information of the first SIB1-PDCCH is included in other configuration information. This other configuration information refers to configuration information other than the first configuration information, and can also be considered as the second configuration information. In other words, under this implementation, the first configuration information only contains the time-frequency resource location information of the extended SIB1-PDCCH. At this point, there is no distinction between the first SIB1-PDCCH and the supplementary SIB1-PDCCH; instead, the first SIB1-PDCCH and the supplementary SIB1-PDCCH are treated as a whole resource (i.e., the extended SIB1-PDCCH) for time-frequency location information indication. The second configuration information contains the time-frequency resource location information of the first SIB1-PDCCH. When the terminal device determines the time-frequency resource location of the SIB1-PDCCH, whether to use the first or second configuration information depends on the transmission status of the SIB1-PDCCH. For example, in scenarios where the extended SIB1-PDCCH is transmitted by default (e.g., higher frequency bands or more distant cell coverage) or when the terminal device obtains indication information for extended SIB1-PDCCH transmission, the terminal device needs to determine the specific sub-configuration information in the first configuration information based on the first indication information. If the extended SIB1-PDCCH is not transmitted, the terminal device needs to determine the specific sub-configuration information in the second configuration information based on the first indication information.

[0201] It is important to understand that the time-frequency resource distribution patterns of the additional SIB1-PDCCH and the first SIB1-PDCCH can be directly agreed upon in the protocol, or a set of time-frequency resource mapping rules for the additional SIB1-PDCCH and the first SIB1-PDCCH can be defined in the protocol.

[0202] Based on the above explanation, the following provides specific distribution examples of the additional SIB1-PDCCH in the time and frequency domains. It should be noted that, for ease of understanding, the additional SIB1-PDCCH is described as a combination of partially additional SIB1-PDCCH and the remaining additional SIB1-PDCCH excluding the partially additional SIB1-PDCCH. This distribution is intended to illustrate the time-frequency resources occupied by the additional SIB1-PDCCH and the first SIB1-PDCCH, and does not represent the actual resource mapping process, nor does it indicate the order of mapping.

[0203] Example 1 of the distribution of the first SIB1-PDCCH and the additional SIB1-PDCCH (please refer to...) Figures 3A-3D )

[0204] A portion of the additional SIB1-PDCCH is distributed across symbols in time-domain indices 0, 1, and 2 that are not mapped to the first SIB1-PDCCH. In other words, the additional SIB1-PDCCH is distributed across symbols in time-domain indices 0, 1, and 2, excluding those already mapped to the first SIB1-PDCCH. This portion of the additional SIB1-PDCCH occupies the same range of RBs in the frequency domain as the first SIB1-PDCCH. After removing the portion of the additional SIB1-PDCCH, the remaining additional SIB1-PDCCH can be distributed on either side or the same side of the frequency domain resources jointly occupied by the portion of the additional SIB1-PDCCH and the first SIB1-PDCCH, and the same as the symbols jointly occupied by the portion of the additional SIB1-PDCCH and the first SIB1-PDCCH.

[0205] One possible implementation is that the remaining additional SIB1-PDCCHs are distributed with the same number of RBs on both sides of the frequency domain resources jointly occupied by some additional SIB1-PDCCHs and the first SIB1-PDCCH, for example... Figure 3A and 3B As shown.

[0206] One possible implementation is that the remaining additional SIB1-PDCCHs are distributed on the side of the lowest frequency domain resource (represented by index values, specifically the RB side represented by the lower index values) of the frequency domain resources jointly occupied by the partial additional SIB1-PDCCHs and the first SIB1-PDCCH, for example... Figure 3C and 3D As shown; or, the remaining additional SIB1-PDCCHs are distributed on the side of the frequency domain resource with the highest frequency in the frequency domain resource jointly occupied by some additional SIB1-PDCCHs and the first SIB1-PDCCH (the RB side represented by the high index value).

[0207] In this embodiment of the application, it is agreed that X RBs constitute one frequency domain unit (for example, 6 RBs constitute one frequency domain unit, which is the same as the number of RBs in the control channel unit). The remaining additional SIB1-PDCCHs are distributed in one frequency domain unit on either the side of the lowest frequency domain resource (the RB side represented by the low index value) or the side of the highest frequency domain resource (the RB side represented by the high index value) of the frequency domain resource jointly occupied by the additional SIB1-PDCCH and the first SIB1-PDCCH.

[0208] One possible implementation is that the number of RBs in the additional SIB1-PDCCH can be greater than or equal to the number of RBs in the first SIB1-PDCCH. For example, if the first SIB1-PDCCH contains 24 RBs, the additional SIB1-PDCCH can contain 48 RBs, where X RBs (e.g., X = 24) are time-division multiplexed with the first SIB1-PDCCH, and the remaining 24 RBs are frequency-division multiplexed with the first SIB1-PDCCH (e.g., they can be frequency-division multiplexed). Figure 3A (or 3C illustration). For example, the first SIB1-PDCCH contains 48 RBs, and the additional SIB1-PDCCH can contain 48 RBs, of which X RBs (e.g., X=24) are time-division multiplexed with the first SIB1-PDCCH, and the remaining 24 RBs are frequency-division multiplexed with the first SIB1-PDCCH (e.g., can be illustrated as 3B or 3D).

[0209] Example 2 of the distribution of the first SIB1-PDCCH and the additional SIB1-PDCCH (see also) Figures 3E to 3G )

[0210] Some of the additional SIB1-PDCCHs are distributed on symbols that are not mapped to the first SIB1-PDCCH in the symbols with time-domain index numbers 0, 1, and 2. The starting and ending positions of the RBs occupied by this part of the additional SIB1-PDCCH in the frequency domain are the same as those of the first SIB1-PDCCH. The remaining additional SIB1-PDCCH after removing the part of the additional SIB1-PDCCH can be frequency-divided with the first SIB1-PDCCH.

[0211] One possible implementation is that the remaining additional SIB1-PDCCHs are distributed on either the side of the lowest frequency-domain resource (the RB side represented by the low index value) or the side of the highest frequency-domain resource (the RB side represented by the high index value) of the frequency-domain resource occupied by the first SIB1-PDCCH, for example... Figure 3E and 3F As shown; or, the remaining additional SIB1-PDCCHs are distributed on both sides of the frequency domain resources occupied by the first SIB1-PDCCH (for example, it can be agreed that mapping is preferentially performed on the high-index RB side or the low-index RB side, and then mapped to the other side), for example Figure 3G As shown, the number of RBs on both sides can be the same or different.

[0212] Example 3 of the distribution of the first SIB1-PDCCH and the additional SIB1-PDCCH (see also) Figure 3H )

[0213] The additional SIB1-PDCCH is distributed in the symbols with time-domain index numbers 0, 1, and 2 that are not mapped to the first SIB1-PDCCH. The additional SIB1-PDCCH occupies the same number of RBs in the frequency domain as the first SIB1-PDCCH.

[0214] Based on the above distribution pattern, optionally, the additional SIB1-PDCCH occupies the same number of RBs in the frequency domain as the first SIB1-PDCCH, and the start and end positions of the RBs in the frequency domain are the same. For example, as shown... Figure 3H As shown, assume that the first SIB1-PDCCH occupies 24RB in the frequency domain and the 0th symbol in the time domain, and the additional SIB1-PDCCH also occupies 24RB in the frequency domain and the 1st symbol in the time domain.

[0215] Example 4 of the distribution of the first SIB1-PDCCH and the additional SIB1-PDCCH (see also) Figure 3I )

[0216] The additional SIB1-PDCCH is frequency-divided by the first SIB1-PDCCH, and occupies the same number of symbols in the time domain.

[0217] For example, such as Figure 3I As shown, assume that the first SIB1-PDCCH occupies 24RB in the frequency domain and the 0th symbol in the time domain, and the additional SIB1-PDCCH also occupies 24RB in the frequency domain and the 0th symbol in the time domain.

[0218] Example 5 of the distribution of the first SIB1-PDCCH and the additional SIB1-PDCCH (see also) Figure 3J )

[0219] The additional SIB1-PDCCH is distributed in the time domain at least on one of the symbols with index numbers 0, 1, and 2. The RB start positions in the frequency domain are the same as the RB start positions of the SSB corresponding to the first SIB1-PDCCH or the RB start positions of the specific SSB mentioned above, for example... Figure 3J As shown.

[0220] Example 6 of the distribution of the first SIB1-PDCCH and the additional SIB1-PDCCH (see also) Figure 3K )

[0221] The protocol can specify that the maximum bandwidth occupied by the SIB1-PDCCH in the frequency domain is N RB. The additional SIB1-PDCCH takes the RB start position of the first SIB1-PDCCH, or the RB start position of the SSB corresponding to the first SIB1-PDCCH, or the RB start position of a specific SSB as the RB start position in the frequency domain, and is frequency-divided with the first SIB1-PDCCH within the RB range specified in the protocol.

[0222] One possible implementation is that the maximum bandwidth N RB can be the sum of the number of RBs in the first SIB1-PDCCH and the number of RBs in the frequency domain offset of the first SIB1-PDCCH relative to the SSB corresponding to the first SIB1-PDCCH.

[0223] For example, such as Figure 3K As shown, the additional SIB1-PDCCH uses the RB start position of the SSB corresponding to the first SIB1-PDCCH as the start position of the RB in the frequency domain. Within the range of RBs specified in the protocol, part of the additional SIB1-PDCCH is frequency-divided with the first SIB1-PDCCH, and the remaining additional SIB1-PDCCH is time-divided with the first SIB1-PDCCH.

[0224] Example 7 of the distribution of the first SIB1-PDCCH and the additional SIB1-PDCCH (see also) Figure 3L )

[0225] The protocol specifies that the maximum number of symbols occupied by the SIB1-PDCCH in the time domain is Ns. The additional SIB1-PDCCH uses the RB start position corresponding to the first SIB1-PDCCH, or the RB start position of the SSB corresponding to the first SIB1-PDCCH, or the RB start position of a specific SSB, as the RB start position in the frequency domain. Within the range of Ns specified in the protocol, it is time-divided with the first SIB1-PDCCH. For example... Figure 3L As shown.

[0226] It should be noted that, without distinguishing between the additional SIB1-PDCCH and the first SIB1-PDCCH, the above distribution patterns can be understood as time-frequency resource distribution patterns of the extended SIB1-PDCCH.

[0227] Specifically, one possible implementation is that the terminal device can assume the network device maps and extends SIB1-PDCCH resources in a time-domain first, then frequency-domain manner. For example, within a defined frequency domain range, starting from the smallest RB index n corresponding to the smallest symbol index m, the mapping proceeds sequentially to the RB with index n corresponding to the symbol with index m+1, until the time-domain symbols are mapped, and then the mapping continues from the RB with index n+1 corresponding to the smallest symbol index m. Another possible implementation is that the terminal device can assume the network device maps and extends SIB1-PDCCH resources in a frequency-domain first, then time-domain manner. For example, within a defined time domain range, starting from the smallest RB index n corresponding to the smallest symbol index m, the mapping proceeds sequentially to the RB with index n+1 corresponding to the symbol with index m, until the corresponding RBs in the frequency domain are mapped, and then the mapping continues from the RB with index n corresponding to the symbol with index m+1.

[0228] It should be noted that the above distribution pattern is only an example, and there may be other distribution patterns besides the above example, which are not limited here.

[0229] The first configuration information will be illustrated below, and it is implemented in tabular form.

[0230] Specifically, in this embodiment, the first configuration information includes control resource set configuration information and search space configuration information for the SIB1-PDCCH. The control resource set configuration information is used to determine the frequency domain position of the SIB1-PDCCH, and the search space configuration information is used to determine the time domain position of the SIB1-PDCCH. Specifically, the control resource set configuration information and the search space configuration information each correspond to a table, and each table contains multiple rows of sub-configuration information. Each row of sub-configuration information is indicated by an index, which can be the first indication information in this embodiment. That is, the first indication information is the index of the sub-configuration information in the first configuration information (control resource set configuration information and search space configuration information), used to indicate a specific sub-configuration information. For example, the first indication information can be carried by the pdcch-ConfigSIB1 field in the MIB message carried by the PBCH. Specifically, the controlResourceSetZero field (4 bits) in the pdcch-ConfigSIB1 field is used to indicate the index in the control resource set configuration information, and the SearchSpaceZero field (4 bits) is used to indicate the index in the search space configuration information.

[0231] It should be noted that, similar to the provisions in 3GPP protocol 38.213, the control resource set configuration information and search space configuration information in the first configuration information of this application embodiment can each correspond to multiple tables. The terminal device first determines a specific table based on its own bandwidth and cell subcarrier spacing, and then determines the specific sub-configuration information corresponding to that table according to the first indication information. The following description will focus on one of the tables to illustrate the embodiment of this application. Other tables can be configured based on the same inventive concept, and for the sake of brevity, they will not be listed here.

[0232] Example 1: The first configuration information includes the time-frequency resource location of the first SIB1-PDCCH and the time-frequency resource location of the additional SIB1-PDCCH.

[0233] The first configuration information may include information as shown in Table 1 and Table 2. Table 1 is the control resource set configuration information, and Table 2 is the search space configuration information. The time and frequency resource information of the first SIB1-PDCCH in Table 1 is exemplified by the information represented in Table 13-4 of 3GPP protocol 38.213, and the time domain information of the first SIB1-PDCCH in Table 2 is exemplified by the information represented in Table 13-11 of 3GPP protocol 38.213. In Table 1, the SS / PBCH and CORESET multiplexing modes are consistent with the description in 3GPP protocol 38.213. The number of RBs occupied by CORESET refers to the number of RBs occupied by the first SIB1-PDCCH, the number of symbols occupied by CORESET refers to the number of symbols occupied by the first SIB1-PDCCH, offset 1 refers to the offset from the minimum RB index of the first SIB1-PDCCH to the minimum RB index of the common RB that overlaps with the first RB of the corresponding SS / PBCH block, offset 2 (i.e., Δf) can be the offset from the minimum RB index of the additional SIB1-PDCCH to the minimum RB index of the common RB that overlaps with the first RB of the corresponding SS / PBCH block, the offset from the minimum RB index of the additional SIB1-PDCCH to the minimum RB index of the first SIB1-PDCCH, the offset from the maximum RB index of the additional SIB1-PDCCH to the maximum RB index of the first SIB1-PDCCH, or the additional RB added by the additional SIB1-PDCCH relative to the minimum or maximum RB index of the first SIB1-PDCCH. This application does not make specific limitations on this. In Table 2, the configuration parameters in the first five columns can be understood as the information of the first SIB1-PDCCH indicated in protocol 38.213. The offset shown in the sixth column can be the offset value of the additional SIB1-PDCCH relative to the first symbol index or the last symbol index in the time domain of the first SIB1-PDCCH, or it can be the offset value relative to the first symbol index or the last symbol index of the SSB. This application does not make specific limitations. Optionally, Table 2 can further include the offset value of the additional SIB1PDCCH CORESET detection period relative to the first SIB1-PDCCH CORESET detection period, such as 1 slot, 2 slots, etc.

[0234] Specifically, with Figure 3H Taking the time-frequency resource distribution pattern of the supplementary SIB1-PDCCH and the first SIB1-PDCCH as an example, the supplementary SIB1-PDCCH contains the same number of RBs as the first SIB1-PDCCH. The sub-configuration information corresponding to index 0, indicated by the first indication information, is used as an example for illustration. Figure 3HIn the time-frequency resource distribution patterns of the supplementary SIB1-PDCCH and the first SIB1-PDCCH shown, the value of Δf is 0, and the value of Δs is 1. It should be noted that the above is only an illustrative example. Based on the same concept, different values ​​may correspond to specific resource distribution patterns, and this application does not limit this.

[0235] Table 1

[0236]

[0237] Table 2

[0238]

[0239] Example 2's first configuration information includes the time-frequency resource location of the extended SIB1-PDCCH.

[0240] Specifically, the number of symbols occupied in the time domain of the extended SIB1-PDCCH in the time-frequency resource location is greater than the number of symbols occupied in the time domain of the first SIB1-PDCCH, and the number of resource blocks (RBs) occupied in the frequency domain is greater than or equal to the number of RBs occupied in the frequency domain of the first SIB1-PDCCH; or, the number of RBs occupied in the frequency domain of the extended SIB1-PDCCH in the time-frequency resource location is greater than the number of RBs occupied in the frequency domain of the first SIB1-PDCCH, and the number of symbols occupied in the time domain is greater than or equal to the number of symbols occupied in the time domain of the first SIB1-PDCCH.

[0241] Furthermore, the time-domain resources occupied by the extended SIB1-PDCCH can be at least one of the symbols with index numbers 0 to 2.

[0242] Specifically, the first configuration information may include, for example, the information shown in Tables 3 and 4. Table 3 shows the control resource set configuration information for the extended SIB1-PDCCH, and Table 4 shows the search space configuration information for the extended SIB1-PDCCH. In Table 3, f' represents the number of RBs occupied by the extended SIB1-PDCCH in the frequency domain, s' represents the number of symbols occupied by the extended SIB1-PDCCH in the time domain, and s' can take the value of 1, 2, or 3. Δf' is the offset in the frequency domain from the extended SIB1-PDCCH to the minimum RB index of the common RB overlapping with the first RB of the corresponding SS / PBCH block. Table 4 includes information such as the search space corresponding to the extended SIB1-PDCCH, the number of search spaces per time slot, and the starting symbol index. The specific configuration parameters can be the same as the first SIB1-PDCCH configuration parameters in Protocol 38.213 (taking Table 13-11 in Protocol 38.213 as an example), or a new set of search space configuration information can be defined.

[0243] For example, with Figure 3HTaking the extended SIB1-PDCCH resource distribution pattern shown as an example, assuming that the number of RBs in the frequency domain of the extended SIB1-PDCCH is 24 RBs and the number of symbols in the time domain is 2 symbols under this distribution pattern, and assuming that the first indication information indicates Index 0, then the corresponding value of f' under Index 0 is 24 RBs and the value of s' is 2. The value of Δf′ can refer to the value of the first SIB1-PDCCH frequency domain offset in protocol 38.213; for example, Δf′ can be 0. It should be noted that the above is only an exemplary illustration, and based on the same concept, different values ​​can correspond to specific resource distribution patterns; this application does not limit this.

[0244] Table 3

[0245]

[0246] Table 4

[0247]

[0248] The above example presents the first configuration information in tabular form. It should be noted that the first configuration information can also be implemented by formulas or other methods, and this application does not make specific limitations on this.

[0249] Optionally, the physical downlink control channel transmission method further includes the following steps:

[0250] S203. The terminal device detects the first SIB1-PDCCH and the additional SIB1-PDCCH according to the first instruction information.

[0251] In one possible implementation, after receiving an indication that the additional SIB1-PDCCH or extended SIB1-PDCCH will be transmitted, the terminal device assumes that the downlink control information (DCI) corresponding to the additional SIB1-PDCCH or extended SIB1-PDCCH at different detection opportunities will definitely be sent. That is, after the network device sends the additional SIB1-PDCCH or extended SIB1-PDCCH, it is certain that it will send the DCI. In another implementation, after receiving an indication that the additional SIB1-PDCCH will be transmitted, the terminal device can consider or assume that the DCI corresponding to the first SIB1-PDCCH will definitely be sent. That is, when the network device sends the additional SIB1-PDCCH, it is also certain that it will send the DCI corresponding to the first SIB1-PDCCH. For example, the above implementation can be accomplished through protocol agreement. Furthermore, after obtaining the time-frequency resource location information of the supplementary SIB1-PDCCH or extended SIB1-PDCCH, the terminal device detects the supplementary SIB1-PDCCH or extended SIB1-PDCCH at the corresponding time-frequency resource location. One possible implementation is that the detection period of the supplementary SIB1-PDCCH or extended SIB1-PDCCH is the same as the detection period of the first SIB1-PDCCH; alternatively, the transmission period of the supplementary SIB1-PDCCH or extended SIB1-PDCCH can be considered the same as that of the first SIB1-PDCCH.

[0252] Another possible implementation is that the protocol directly stipulates the detection period for the additional SIB1-PDCCH or the extended SIB1-PDCCH; or, a third indication information is carried in the PBCH or the first SIB1-PDCCH to indicate the detection period for the additional SIB1-PDCCH or the extended SIB1-PDCCH. For example, the detection period for the additional SIB1-PDCCH or the extended SIB1-PDCCH is 20ms*k, where k can be an integer greater than 1 (e.g., 2, 4, 8, 16, 32, 64, etc.) or a number greater than 0 and less than 1 (e.g., 1 / 2, 1 / 4, 1 / 8, 1 / 10, 1 / 20, 1 / 40, etc.).

[0253] The terminal equipment performs detection on the additional SIB1-PDCCH or extended SIB1-PDCCH according to the detection cycle of the additional SIB1-PDCCH or extended SIB1-PDCCH.

[0254] Additionally, it's important to note that in the case of default transmission of Additional SIB1-PDCCH or Extended SIB1-PDCCH, one possible implementation is that the terminal device assumes the Additional SIB1-PDCCH or Extended SIB1-PDCCH function is enabled. This means the network device may transmit Additional SIB1-PDCCH or Extended SIB1-PDCCH, but whether it sends it at each detection interval is determined by the network device itself. In this case, the terminal device checks for Additional SIB1-PDCCH or Extended SIB1-PDCCH at different detection intervals. If the detection fails, the terminal device can assume the network device did not send Additional SIB1-PDCCH or Extended SIB1-PDCCH. Another possible implementation is that the terminal device should assume the Additional SIB1-PDCCH or Extended SIB1-PDCCH function is enabled and always transmit it in each detection cycle. In this scenario, the terminal device should detect the additional SIB1-PDCCH or extended SIB1-PDCCH at each detection opportunity. If the detection fails, the terminal device assumes that the network device sent the additional SIB1-PDCCH or extended SIB1-PDCCH, but the detection failed. For example, the terminal device can demodulate the additional SIB1-PDCCH detected in the current period together with the first PDCCH.

[0255] S204. The terminal device obtains system message block 1SIB1 based on the detected first SIB1-PDCCH and additional SIB1-PDCCH.

[0256] One possible implementation is that the scheduling information carried by the additional SIB1-PDCCH can be demodulated independently. The terminal device can assume or presume that the additional SIB1-PDCCH carries the corresponding scheduling information as the first SIB1-PDCCH. For example, the corresponding scheduling information may specifically include, but is not limited to, the following: the same SIB1-PDSCH frequency domain resource assignment, the same SIB1-PDSCH time domain resource assignment, the same SIB1-PDSCH code rate and modulation order, and the same SIB1-PDSCH redundancy version. Optionally, the SIB1-PDSCH redundancy versions scheduled by the first SIB1-PDCCH and the additional SIB1-PDCCH can be different.

[0257] Optionally, the terminal device may assume that the DMRS sequence of the appended SIB1-PDCCH is the same as that of the first SIB1-PDCCH. On the one hand, the terminal device does not need to generate a new DMRS sequence; on the other hand, the same DMRS sequence is beneficial for joint detection of the appended SIB1-PDCCH and the first SIB1-PDCCH, reducing complexity.

[0258] Optionally, the terminal device can use the System Information-Radio Network Temporary Identifier (SI-RNTI) of the first system information to verify the first SIB-PDCCH, or the terminal device can use the second SI-RNTI to verify the supplementary SIB1-PDCCH. The first SI-RNTI is an existing SI-RNTI, and the second SI-RNTI is a newly defined SI-RNTI generated based on the cell identifier and can be used only for verifying the supplementary SIB1-PDCCH.

[0259] Optionally, the terminal device may assume that the additional SIB1-PDCCH and the first SIB1-PDCCH schedule the same PDSCH information. If the terminal device successfully demodulates the first SIB1-PDCCH, the terminal device does not need to detect the additional SIB1-PDCCH again. Alternatively, if the terminal device successfully demodulates the additional SIB1-PDCCH, the terminal device does not need to detect the first SIB1-PDCCH again.

[0260] It should be noted that when the terminal device determines that the additional SIB1-PDCCH will be transmitted, the terminal device assumes that the starting position of the DMRS of the additional SIB1-PDCCH and the PDSCH scheduled by the first SIB1-PDCCH in the time domain is the symbol with index 3.

[0261] Optionally, the terminal device assumes that the additional SIB1-PDCCH and the first SIB1-PDCCH use the same precoding, which is beneficial for joint demodulation of the additional SIB1-PDCCH and the first SIB1-PDCCH.

[0262] In the above embodiments, the additional SIB1-PDCCH and the first SIB1-PDCCH carry corresponding scheduling information. The terminal device can jointly demodulate the additional SIB1-PDCCH and the first SIB1-PDCCH to further improve the coverage of SIB1-PDCCH and avoid the terminal device being unable to access the network when the SIB1-PDCCH coverage is insufficient.

[0263] Another possible implementation is that the supplementary SIB1-PDCCH serves only as a supplementary resource to the first SIB1-PDCCH and cannot be demodulated independently. It is used to expand the resources of the first SIB1-PDCCH, and the first SIB1-PDCCH and the supplementary SIB1-PDCCH together constitute the extended SIB1-PDCCH. The extended SIB1-PDCCH carries the scheduling information originally carried in the first SIB1-PDCCH. Optionally, the supplementary SIB1-PDCCH may contain the same DMRS sequence as the first SIB1-PDCCH. For example, as shown... Figure 4 As shown, the terminal device can perform rate matching based on the extended SIB1-PDCCH. That is, the terminal device determines the code rate of the extended SIB1-PDCCH based on the bit information carried by the extended SIB1-PDCCH, the extended SIB1-PDCCH, and the extended SIB1-PDCCH pilot resources.

[0264] In the above embodiments, the additional SIB1-PDCCH is used as a resource extension of the first SIB1-PDCCH. It can carry the scheduling information originally carried by the first SIB1-PDCCH together with the first SIB1-PDCCH as a whole resource. The number of extended resources required is more flexible. For scenarios where it is not necessary to fully extend the first SIB1-PDCCH, the resource overhead is smaller, and the robustness of the SIB1-PDCCH can be improved.

[0265] Furthermore, for systems where network devices employ beam transmission or terminal devices need to select a beam for reception, the terminal device may assume that the additional SIB1-PDCCH has or exists a quasi-co-located (QCL) relationship with the first SIB1-PDCCH, meaning the terminal device can use the receiving beam that receives the first SIB1-PDCCH to receive the additional SIB1-PDCCH; or, the terminal device may assume that the additional SIB1-PDCCH has or exists a quasi-co-located relationship with the SSB corresponding to the first SIB1-PDCCH, meaning the terminal device can use the receiving beam that receives the SSB corresponding to the first SIB1-PDCCH to receive the additional SIB1-PDCCH; or, the terminal device may assume that the additional SIB1-PDCCH has or exists a quasi-co-located relationship with the specific SSB that indicates the additional SIB1-PDCCH, meaning the terminal device can use the receiving beam that receives the specific SSB to receive the additional SIB1-PDCCH.

[0266] like Figure 5AAs shown, this application embodiment also provides a device 500a, which can be a terminal device, a device within a terminal device, or a device compatible with a terminal device. In one possible implementation, the device 500a may include modules or units corresponding to the methods / operations / steps / actions executed by the terminal device in the above method embodiments. These units may be hardware circuits, software, or a combination of hardware circuits and software. In one possible implementation, the device 500a may include a transceiver unit 510a and a processing unit 520a. The transceiver unit 510a can communicate with external systems, and the processing unit 520a is used for data processing. The transceiver unit 510a may also be referred to as a communication interface or communication unit.

[0267] When the device 500a is used to perform the operation performed by the terminal device, the transceiver unit 510a may include a first indication information acquisition unit 5101a, which can be used to acquire first indication information, which is used to indicate the time and frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH; optionally, the transceiver unit 510a may also include a second indication information acquisition unit 5102a, which can be used, for example, to acquire second indication information, which is used to indicate whether the additional SIB1-PDCCH is transmitted. Furthermore, the processing unit 520a can process information based on the first or second indication information obtained by the transceiver unit 510a. For example, the processing unit 520a may include a SIB1-PDCCH detection unit 5201a, which is used to detect the first SIB1-PDCCH and the additional SIB1-PDCCH based on the first indication information. The processing unit 520a also includes a system message block 1 SIB1 acquisition unit 5202a, which is used to acquire system message block SIB1 based on the detected additional SIB1-PDCCH and the first SIB1-PDCCH.

[0268] It should be noted that, in the specific embodiments of this application, the above-mentioned device 500a may be the terminal device in the above-mentioned method embodiments. That is to say, in the specific implementation, the functional implementation and beneficial effects of each module of device 500a can be referred to the description of the relevant method steps in the above-mentioned method embodiments. For the sake of brevity, it will not be repeated here.

[0269] Furthermore, the functional unit division in the above-mentioned device 500a is only an exemplary illustration. The processing unit 520a and the transceiver unit 510a may also include other functional units to realize the corresponding functions; or the processing unit 520a and the transceiver unit 510a can realize the functions without specific functional unit division. This application does not make any specific limitations.

[0270] like Figure 5B As shown in the embodiments of this application, an apparatus 500b is also provided. This apparatus 500b can be a network device, a device within a network device, or a device compatible with a network device. In one possible implementation, the apparatus 500b may include modules or units corresponding to the methods / operations / steps / actions performed by the network device in the above method embodiments. These units can be hardware circuits, software, or a combination of hardware circuits and software. In one possible implementation, the apparatus 500b may include a transceiver unit 510b and a processing unit 520b. The transceiver unit 510b can communicate with external systems, and the processing unit 520b is used for data processing. The transceiver unit 510b may also be referred to as a communication interface or communication unit.

[0271] When device 500b is used to perform operations performed by network devices, processing unit 520b may include a determining unit 5201b, which may, for example, be used to determine the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH; optionally, processing unit 520b may include a second indication information determining unit 5202b, which may, for example, be used to determine second indication information used to indicate whether the additional SIB1-PDCCH is transmitted. Transceiver unit 510b may be used to perform... Figure 2 In step 202, a first indication message is sent, which is used to indicate the time and frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH; or step 201a is executed to send a second indication message.

[0272] It should be noted that, in the specific embodiments of this application, the above-mentioned device 500b can be the terminal device in the above-mentioned method embodiments. That is to say, in the specific implementation, the functional implementation and beneficial effects of each module of device 500b can be referred to the description of the relevant method steps in the above-mentioned method embodiments. For the sake of brevity, it will not be repeated here.

[0273] Furthermore, the functional unit division in the above-mentioned device 500b is only an illustrative example. The processing unit 520b and the transceiver unit 510b may also include other functional units to realize the corresponding functions; or the processing unit 520b and the transceiver unit 510b can realize the functions without specific functional unit division. This application does not make any specific limitations.

[0274] In a distributed network device, the transceiver unit 510b may not include a radio frequency unit and an antenna.

[0275] It should be understood that Figure 5A and Figure 5B This is merely an example and not a limitation; the terminal devices and network devices described above, including transceiver units and processing units, may not rely on... Figure 5A and Figure 5B The structures shown, including the names of the transceiver unit and the processing unit, are merely examples and not intended to be limiting. Any unit or module that can perform the functions of the transceiver unit and the processing unit in the examples can be understood as a transceiver unit and a processing unit.

[0276] When devices 500a and 500b are chip or integrated circuit systems, the chip or integrated circuit system includes a transceiver unit and a processing unit. The transceiver unit can be an input / output circuit or a communication interface; the processing unit can be a processor, microprocessor, or integrated circuit integrated on the chip. Unless otherwise specified, or if it does not contradict its actual function or internal logic in the relevant description, the transmission, receiving, and other operations involved in the transceiver unit can be more generally understood as the output and reception, input, and other operations of the transceiver unit, rather than the transmission, receiving, and receiving operations directly performed by the radio frequency circuit and antenna.

[0277] In this embodiment, devices 500a and 500b can be presented in an integrated manner, divided into various functional units. Here, "unit" can refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuit, and / or other devices that can provide the above-mentioned functions.

[0278] Figure 6 A simplified structural diagram 600 of a terminal device is shown. This is for ease of understanding and illustration. Figure 6 In this context, the terminal device is taken as a mobile phone. For example... Figure 6As shown, the terminal device includes a processor, memory, radio frequency (RF) circuitry, antenna, and input / output devices. The processor is primarily used for processing communication protocols and data, controlling the terminal device, executing software programs, and processing software program data. The memory is mainly used to store software programs and data. The RF circuitry is mainly used for converting baseband signals to RF signals and processing RF signals. The antenna is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, and keyboards, are mainly used to receive user input data and output data to the user. It should be noted that some types of terminal devices may not have input / output devices.

[0279] When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits it outward as electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts it into a baseband signal, and outputs the baseband signal to the processor. The processor then converts the baseband signal back into data and processes it. For ease of explanation, Figure 6 Only one memory and processor are shown in the illustration. In actual terminal device products, there may be one or more processors and one or more memories. Memory may also be referred to as storage medium or storage device, etc. Memory may be set up independently of the processor or integrated with the processor; this application does not limit this.

[0280] In the embodiments of this application, the antenna and radio frequency circuit with transceiver functions can be regarded as the receiving unit and transmitting unit (or collectively referred to as the transceiver unit) of the terminal device, and the processor with processing functions can be regarded as the processing unit of the terminal device. Figure 6 As shown, the terminal device includes a transceiver unit 610 and a processing unit 620. The transceiver unit 610 can also be referred to as a receiver / transmitter, receiver / transmitter, receiver / transmitter circuit, etc. The processing unit 620 can also be referred to as a processor, processing board, processing module, processing device, etc. The transceiver unit 610 and the processing unit 620 can be used to perform the actions of the terminal device in the above method embodiments. For example, the transceiver unit 610 is used to acquire first indication information, which indicates the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH; the processing unit 620 is used to detect the first SIB1-PDCCH and the additional SIB1-PDCCH according to the first indication information; the processing unit 620 can also be used to acquire system message block SIB1 according to the detected additional SIB1-PDCCH and the first SIB1-PDCCH.

[0281] All relevant content and beneficial effects of each step involved in the above method embodiments can be referenced from the functional description of the corresponding functional device, and will not be repeated here.

[0282] like Figure 7 As shown in the illustration, this application embodiment further provides an apparatus 700, which is used to implement the functions of the network device in the above-described method. This apparatus can be a network device, a device within a network device, or a device compatible with a network device. The apparatus 700 can be a chip system. In this application embodiment, the chip system can be composed of chips or may include chips and other discrete devices. The apparatus 700 includes at least one processor 710, used to implement the functions of the network device in the method provided in this application embodiment. The apparatus 700 may also include a transceiver 720.

[0283] The apparatus 700 can be specifically used to execute the relevant methods performed by the network device in the above method embodiments. For example, the transceiver 720 can be used to send first indication information, which indicates the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH; it can also be used to send second indication information, which indicates whether the additional SIB1-PDCCH is transmitted. The processor 710 can be used to determine the time-frequency resource locations of the first SIB1-PDCCH and the additional SIB1-PDCCH.

[0284] It should be noted that, in the specific implementation, the functional implementation of each module of the device 700 can be referred to the description of the relevant method steps in the above method embodiment. For the sake of brevity, it will not be repeated here.

[0285] The device 700 may further include at least one memory 730 for storing program instructions and / or data. The memory 730 is coupled to the processor 710. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, and may be electrical, mechanical, or other forms, for information exchange between devices, units, or modules. The processor 710 may operate in conjunction with the memory 730. The processor 710 may execute program instructions stored in the memory 730. In one possible implementation, at least one of the at least one memory may be integrated with the processor. In another possible implementation, the memory 730 is located outside the device 700.

[0286] This application embodiment does not limit the specific connection medium between the transceiver 720, processor 710, and memory 730. This application embodiment... Figure 7 The memory 730, processor 710, and transceiver 720 are connected via a bus 740, and the bus is in... Figure 7The connections between other components are shown in bold and are for illustrative purposes only, not as limiting information. The bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, Figure 7 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0287] In this embodiment, the processor 710 can be one or more central processing units (CPUs). When the processor 710 is a CPU, it can be a single-core CPU or a multi-core CPU. The processor 710 can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in this embodiment. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in this embodiment can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0288] In this embodiment, the memory 730 may include, but is not limited to, non-volatile memory such as a hard disk drive (HDD) or solid-state drive (SSD), random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM), or compact disc read-only memory (CD-ROM), etc. Memory is any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto. The memory 1030 in this embodiment may also be a circuit or any other device capable of implementing storage functions for storing program instructions and / or data.

[0289] like Figure 8 As shown, this application embodiment also provides a device 800, which can be used to implement the functions of the terminal device and network device in the above method. The device 800 can be a communication device or a chip within a communication device. The device includes:

[0290] At least one input / output interface 810 and logic circuit 820 are included. The input / output interface 810 may be an input / output circuit. The logic circuit 820 may be a signal processor, a chip, or other integrated circuit that can implement the method of this application.

[0291] The device 800 may further include at least one memory 830 for storing program instructions and / or data. The memory 830 is coupled to the logic circuit 820. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, and may be electrical, mechanical, or other forms, for information exchange between devices, units, or modules. The logic circuit 820 may operate in conjunction with the memory 830. The logic circuit 820 may execute the program instructions stored in the memory 830. In one possible implementation, at least one of the at least one memory may be integrated with the logic circuit. In another possible implementation, the memory 830 is located outside the device 800.

[0292] At least one input / output interface 810 is used for inputting or outputting signals or data.

[0293] For example, when the device is a terminal device or is used for a terminal device, in one embodiment, the input / output interface 810 is used to input first indication information, which indicates the time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH; the input / output interface 810 is also used to input second indication information, which indicates whether the additional SIB1-PDCCH or the extended SIB1-PDCCH is transmitted.

[0294] For example, when the device is a network device, in one embodiment, the input / output interface 810 is used to output first indication information, which indicates the time-frequency resource location of the additional SIB1-PDCCH; the input / output interface 810 is also used to output second indication information, which indicates whether the additional SIB1-PDCCH or extended SIB1-PDCCH is transmitted.

[0295] The logic circuit 820 is used to execute some or all of the steps of any of the methods provided in the embodiments of this application. The logic circuit can implement the functions implemented by the processing unit 520a in device 500a, the processing unit 520b in device 500b, the processor 620 in device 600, and the processor 710 in device 700.

[0296] When the aforementioned device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments. The terminal device chip receives information from other modules (such as radio frequency modules or antennas) in the terminal device, which is sent to the terminal device by the network device; or, the terminal device chip sends information to other modules (such as radio frequency modules or antennas) in the terminal device, which is sent to the network device by the terminal device.

[0297] When the aforementioned device is a chip applied to a network device, the network device chip implements the functions of the network device in the above method embodiments. The network device chip receives information from other modules (such as radio frequency modules or antennas) in the network device, which is information sent by the terminal device to the network device; or, the network device chip sends information to other modules (such as radio frequency modules or antennas) in the network device, which is information sent by the network device to the terminal device.

[0298] Based on the same concept as the above-described method embodiments, this application also provides a computer-readable storage medium storing a computer program that is executed by hardware (e.g., a processor) to implement some or all of the steps of any method executed by any device in this application embodiment.

[0299] Based on the same concept as the above-described method embodiments, this application also provides a computer program product including instructions, which, when run on a computer, causes the computer to perform some or all of the steps of any of the methods described above.

[0300] Based on the same concept as the above-described method embodiments, this application also provides a communication system, which may include the aforementioned terminal and / or network device. This communication system can be used to implement the operations performed by the terminal device or network device in any possible implementation of the above-described method embodiments. For example, the communication system may have the following characteristics: Figure 1A or Figure 1B The structure shown.

[0301] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., optical disk), or a semiconductor medium (e.g., solid-state drive), etc. In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0302] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0303] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can also be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the indirect or direct coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections of devices or units may be electrical or other forms.

[0304] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0305] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0306] The above descriptions are merely some specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can make other changes and modifications to these embodiments within the technical scope disclosed in this application. Therefore, the appended claims are intended to be interpreted as including the above embodiments and any changes and modifications falling within the scope of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for transmitting a physical downlink control channel, characterized in that, The method includes: Obtain first indication information, which is used to indicate the time and frequency resource locations of the physical downlink control channel SIB1-PDCCH and the supplementary SIB1-PDCCH of the first system information block 1; Based on the first indication information, determine the time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH as a whole; Wherein, the number of symbols occupied in the time domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of symbols occupied in the time domain of the first SIB1-PDCCH, and the number of resource blocks (RBs) occupied in the frequency domain is greater than or equal to the number of RBs occupied in the frequency domain of the first SIB1-PDCCH; or, the number of RBs occupied in the frequency domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of RBs occupied in the frequency domain of the first SIB1-PDCCH, and the number of symbols occupied in the time domain is greater than or equal to the number of symbols occupied in the time domain of the first SIB1-PDCCH.

2. The method of claim 1, wherein, The method further includes: Detect the first SIB1-PDCCH and the additional SIB1-PDCCH according to the first indication information; System information block 1 (SIB1) is obtained based on the detected first SIB1-PDCCH and the additional SIB1-PDCCH.

3. The method according to claim 1 or 2, characterized in that, The first indication information includes one or more offsets, which are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the first SIB1-PDCCH; or, the offsets are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the synchronization signal block SSB. One or more time-frequency resource locations of the additional SIB1-PDCCH are obtained based on the one or more offsets.

4. The method according to claim 3, characterized in that, Each of the one or more offsets includes at least one of a time-domain offset and a frequency-domain offset.

5. The method according to claim 1 or 2, characterized in that, The time-domain resources occupied by the first SIB1-PDCCH and the additional SIB1-PDCCH as a whole are at least one of the symbols with index numbers 0 to 2.

6. The method according to claim 1, 2, or 4, characterized in that, The first indication information is carried in the physical broadcast channel PBCH.

7. The method according to claim 1, 2, or 4, characterized in that, Receive a specific SSB signal, wherein the specific SSB signal carries the first indication information.

8. The method according to claim 7, characterized in that, The specific SSB signal includes at least one of the following: The main synchronization signal of a specific sequence, the auxiliary synchronization signal of a specific sequence, the PBCH demodulation reference signal of a specific sequence, the special SSB structure, the time and frequency position of the special SSB, the synchronization signal SS with a specific frequency offset, and the PBCH with a specific frequency offset.

9. The method according to claim 1, 2, 4, or 8, characterized in that, The additional SIB1-PDCCH is transmitted by default in the predetermined frequency band or frequency point.

10. The method according to claim 1, 2, 4, or 8, characterized in that, Obtain second indication information, which is used to indicate whether the additional SIB1-PDCCH is transmitted.

11. The method according to claim 1, 2, 4, or 8, characterized in that, The additional SIB1-PDCCH has the same detection cycle as the first SIB1-PDCCH.

12. The method according to claim 1, 2, 4, or 8, characterized in that, The additional SIB1-PDCCH carries corresponding scheduling information along with the first SIB1-PDCCH. The corresponding scheduling information includes one or more of the following: frequency domain resources of the Physical Downlink Shared Channel (PDSCH), time domain resources of the PDSCH, code rate of the PDSCH, modulation order of the PDSCH, and redundant version of the PDSCH.

13. The method according to claim 1, 2, 4, or 8, characterized in that, The additional SIB1-PDCCH and the first SIB1-PDCCH together carry the scheduling information carried by the first SIB1-PDCCH.

14. The method according to claim 7, characterized in that, The additional SIB1-PDCCH and the first SIB1-PDCCH are in a quasi-co-addressable QCL relationship; or The additional SIB1-PDCCH and the SSB corresponding to the first SIB1-PDCCH are in a QCL relationship; or The additional SIB1-PDCCH and the specific SSB signal are in a QCL relationship.

15. A method for transmitting a physical downlink control channel, characterized in that, The method includes: Send first indication information, the first indication information being used to determine the time and frequency resource location of the physical downlink control channel SIB1-PDCCH and the supplementary SIB1-PDCCH of the first system information block 1; Wherein, the number of symbols occupied in the time domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of symbols occupied in the time domain of the first SIB1-PDCCH, and the number of resource blocks (RBs) occupied in the frequency domain is greater than or equal to the number of RBs occupied in the frequency domain of the first SIB1-PDCCH; or, the number of RBs occupied in the frequency domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of RBs occupied in the frequency domain of the first SIB1-PDCCH, and the number of symbols occupied in the time domain is greater than or equal to the number of symbols occupied in the time domain of the first SIB1-PDCCH.

16. The method according to claim 15, characterized in that, The first indication information includes one or more offsets, which are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the first SIB1-PDCCH; or, the offsets are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the synchronization signal block SSB.

17. The method according to claim 16, characterized in that, Each of the one or more offsets includes at least one of a time-domain offset and a frequency-domain offset.

18. The method according to claim 15, characterized in that, The time-domain resources of the first SIB1-PDCCH and the additional SIB1-PDCCH as a whole are at least one of the symbols with index numbers 0 to 2.

19. The method according to any one of claims 15-18, characterized in that, The first indication information is carried in the Physical Broadcast Channel (PBCH).

20. The method according to any one of claims 15-18, characterized in that, A specific SSB signal is sent, wherein the specific SSB signal carries the first indication information.

21. The method according to claim 20, characterized in that, The specific SSB signal includes at least one of the following: The main synchronization signal of a specific sequence, the auxiliary synchronization signal of a specific sequence, the PBCH demodulation reference signal of a specific sequence, the special SSB structure, the time and frequency position of the special SSB, the synchronization signal SS with a specific frequency offset, and the PBCH with a specific frequency offset.

22. The method according to any one of claims 15-18, 21, characterized in that, The additional SIB1-PDCCH is transmitted by default in the predetermined frequency band or frequency point.

23. The method according to any one of claims 15-18, 21, characterized in that, Send a second indication message, which is used to indicate whether the additional SIB1-PDCCH is transmitted.

24. The method according to any one of claims 15-18, 21, characterized in that, The additional SIB1-PDCCH has the same transmission period as the first SIB1-PDCCH.

25. The method according to any one of claims 15-18, 21, characterized in that, The additional SIB1-PDCCH carries corresponding scheduling information along with the first SIB1-PDCCH. The corresponding scheduling information includes one or more of the following: frequency domain resources of the Physical Downlink Shared Channel (PDSCH), time domain resources of the PDSCH, code rate of the PDSCH, modulation order of the PDSCH, and redundant version of the PDSCH.

26. The method according to any one of claims 15-18, 21, characterized in that, The additional SIB1-PDCCH and the first SIB1-PDCCH together carry the scheduling information carried by the first SIB1-PDCCH.

27. The method according to claim 20, characterized in that, The additional SIB1-PDCCH and the first SIB1-PDCCH are in a quasi-co-addressable QCL relationship; or The additional SIB1-PDCCH and the SSB corresponding to the first SIB1-PDCCH are in a QCL relationship; or The additional SIB1-PDCCH and the specific SSB signal are in a QCL relationship.

28. A terminal device, characterized in that, include: The transceiver unit is used to acquire first indication information, which is used to indicate the time and frequency resource locations of the physical downlink control channel SIB1-PDCCH and the supplementary SIB1-PDCCH of the first system information block 1. The processing unit is configured to determine the time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH as a whole based on the first indication information. Wherein, the number of symbols occupied in the time domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of symbols occupied in the time domain of the first SIB1-PDCCH, and the number of resource blocks (RBs) occupied in the frequency domain is greater than or equal to the number of RBs occupied in the frequency domain of the first SIB1-PDCCH; or, the number of RBs occupied in the frequency domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of RBs occupied in the frequency domain of the first SIB1-PDCCH, and the number of symbols occupied in the time domain is greater than or equal to the number of symbols occupied in the time domain of the first SIB1-PDCCH.

29. The terminal device according to claim 28, characterized in that, The processing unit is further configured to detect the first SIB1-PDCCH and the additional SIB1-PDCCH according to the first indication information; the processing unit is further configured to obtain system information block 1 SIB1 according to the detected first SIB1-PDCCH and the additional SIB1-PDCCH.

30. The terminal device according to claim 28 or 29, characterized in that, The first indication information includes one or more offsets, which are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the first SIB1-PDCCH; or, the offsets are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the synchronization signal block SSB. The processing unit obtains one or more time-frequency resource locations of the additional SIB1-PDCCH based on the one or more offsets.

31. The terminal device according to claim 30, characterized in that, Each of the one or more offsets includes at least one of a time-domain offset and a frequency-domain offset.

32. The terminal device according to claim 28 or 29, characterized in that, The time-domain resources occupied by the first SIB1-PDCCH and the additional SIB1-PDCCH as a whole are at least one of the symbols with index numbers 0 to 2.

33. The terminal device according to claim 28, 29, or 31, characterized in that, The first indication information is carried in the physical broadcast channel PBCH.

34. The terminal device according to claim 28, 29, or 31, characterized in that, The transceiver unit receives a specific SSB signal, which carries the first indication information.

35. The terminal device according to claim 34, characterized in that, The specific SSB signal includes at least one of the following: The main synchronization signal of a specific sequence, the auxiliary synchronization signal of a specific sequence, the PBCH demodulation reference signal of a specific sequence, the special SSB structure, the time and frequency position of the special SSB, the synchronization signal SS with a specific frequency offset, and the PBCH with a specific frequency offset.

36. The terminal device according to claim 28, 29, 31, or 35, characterized in that, The additional SIB1-PDCCH is transmitted by default in the predetermined frequency band or frequency point.

37. The terminal device according to claim 28, 29, 31, or 35, characterized in that, The transceiver unit acquires second indication information, which is used to indicate whether the additional SIB1-PDCCH is transmitted.

38. The terminal device according to claim 28, 29, 31, or 35, characterized in that, The additional SIB1-PDCCH has the same detection cycle as the first SIB1-PDCCH.

39. The terminal device according to claim 28, 29, 31, or 35, characterized in that, The additional SIB1-PDCCH carries corresponding scheduling information along with the first SIB1-PDCCH. The corresponding scheduling information includes one or more of the following: frequency domain resources of the Physical Downlink Shared Channel (PDSCH), time domain resources of the PDSCH, code rate of the PDSCH, modulation order of the PDSCH, and redundant version of the PDSCH.

40. The terminal device according to claim 28, 29, 31, or 35, characterized in that, The additional SIB1-PDCCH and the first SIB1-PDCCH together carry the scheduling information carried by the first SIB1-PDCCH.

41. The terminal device according to claim 34, characterized in that, The additional SIB1-PDCCH and the first SIB1-PDCCH are in a quasi-co-addressable QCL relationship; or The additional SIB1-PDCCH and the SSB corresponding to the first SIB1-PDCCH are in a QCL relationship; or The additional SIB1-PDCCH and the specific SSB signal are in a QCL relationship.

42. A network device, characterized in that, include: The transceiver unit is used to send first indication information, which is used to determine the time and frequency resource location of the physical downlink control channel SIB1-PDCCH and the additional SIB1-PDCCH of the first system information block 1. Wherein, the number of symbols occupied in the time domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of symbols occupied in the time domain of the first SIB1-PDCCH, and the number of resource blocks (RBs) occupied in the frequency domain is greater than or equal to the number of RBs occupied in the frequency domain of the first SIB1-PDCCH; or, the number of RBs occupied in the frequency domain of the overall time-frequency resource location of the first SIB1-PDCCH and the additional SIB1-PDCCH is greater than the number of RBs occupied in the frequency domain of the first SIB1-PDCCH, and the number of symbols occupied in the time domain is greater than or equal to the number of symbols occupied in the time domain of the first SIB1-PDCCH.

43. The network device according to claim 42, characterized in that, The first indication information includes one or more offsets, which are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the first SIB1-PDCCH; or, the offsets are used to indicate the offset of the time-frequency resource position of the additional SIB1-PDCCH relative to the time-frequency resource position of the synchronization signal block SSB.

44. The network device according to claim 43, characterized in that, Each of the one or more offsets includes at least one of a time-domain offset and a frequency-domain offset.

45. The network device according to claim 42, characterized in that, The time-domain resources occupied by the first SIB1-PDCCH and the additional SIB1-PDCCH as a whole are at least one of the symbols with index numbers 0 to 2.

46. ​​The network device according to any one of claims 42-45, characterized in that, The first indication information is carried in the Physical Broadcast Channel (PBCH).

47. The network device according to any one of claims 42-45, characterized in that, The transceiver unit sends a specific SSB signal, which carries the first indication information.

48. The network device according to claim 47, characterized in that, The specific SSB signal includes at least one of the following: The main synchronization signal of a specific sequence, the auxiliary synchronization signal of a specific sequence, the PBCH demodulation reference signal of a specific sequence, the special SSB structure, the time and frequency position of the special SSB, the synchronization signal SS with a specific frequency offset, and the PBCH with a specific frequency offset.

49. The network device according to any one of claims 42-45 and 48, characterized in that, The additional SIB1-PDCCH is transmitted by default in the predetermined frequency band or frequency point.

50. The network device according to any one of claims 42-45, 48, characterized in that, The transceiver unit sends a second indication message, which is used to indicate whether the additional SIB1-PDCCH is transmitted.

51. The network device according to any one of claims 42-45, 48, characterized in that, The additional SIB1-PDCCH has the same transmission period as the first SIB1-PDCCH.

52. The network device according to any one of claims 42-45 and 48, characterized in that, The additional SIB1-PDCCH carries corresponding scheduling information along with the first SIB1-PDCCH. The corresponding scheduling information includes one or more of the following: frequency domain resources of the Physical Downlink Shared Channel (PDSCH), time domain resources of the PDSCH, code rate of the PDSCH, modulation order of the PDSCH, and redundant version of the PDSCH.

53. The network device according to any one of claims 42-45 and 48, characterized in that, The additional SIB1-PDCCH and the first SIB1-PDCCH together carry the scheduling information carried by the first SIB1-PDCCH.

54. The network device according to claim 47, characterized in that, The additional SIB1-PDCCH and the first SIB1-PDCCH are in a quasi-co-addressable QCL relationship; or The additional SIB1-PDCCH and the SSB corresponding to the first SIB1-PDCCH are in a QCL relationship; or The additional SIB1-PDCCH and the specific SSB signal are in a QCL relationship.

55. A chip system, characterized in that, include: The logic circuit and the input / output interface, wherein the input / output interface is used to input first indication information, and the logic circuit is used to perform the method as described in any one of claims 1-14.

56. A chip system, characterized in that, include: The logic circuit and the input / output interface, wherein the input / output interface is used to output first indication information, and the logic circuit is used to perform the method as described in any one of claims 15-27.

57. A communication device, characterized in that, include: At least one processor and a transceiver, the transceiver being used for Receive or transmit data or signals; the at least one processor is configured to perform actions to cause the communication device to perform the method as described in any one of claims 1-14 or 15-27.

58. The communication device according to claim 57, characterized in that, The communication device further includes a memory coupled to the processor, the memory being used to store a computer program that, when executed by the processor, causes the method of any one of claims 1-14 or 15-27 to be performed.

59. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a computer, causes the method of any one of claims 1-14 or 15-27 to be performed.

60. A computer program product, characterized in that, It includes computer instructions that, when executed on a computer, cause the method of any one of claims 1-14 or 15-27 to be performed.

61. A communication system, characterized in that, The communication system includes a terminal device and a network device, wherein the terminal device is used to perform the method according to any one of claims 1-14, and the network device is used to perform the method according to any one of claims 15-27.

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