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CN-122002385-A - Communication method and related device

CN122002385ACN 122002385 ACN122002385 ACN 122002385ACN-122002385-A

Abstract

The embodiment of the application provides a communication method and a related device, wherein the method comprises the steps of receiving a first sub-block of a master information block MIB, wherein a descrambling sequence corresponding to the first sub-block is a first descrambling sequence, the first sub-block comprises first information, the first information is used for indicating a first sub-block sent in a cycle period where the first sub-block is located, determining a sub-block index of the first sub-block and a repetition belonging to the first sub-block, the first descrambling sequence is used for determining the sub-block index, and the first sub-block indicated by the first information is used for determining the repetition belonging to the first sub-block. By adopting the embodiment of the application, the wireless frame index can be determined through decoding one MIB sub-block, and the complexity of indication and determination is reduced.

Inventors

  • CHEN YING
  • WANG JUN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (20)

  1. 1.A method of communication, the method comprising: receiving a first sub-block of a master information block MIB, wherein a descrambling sequence corresponding to the first sub-block is a first descrambling sequence, the first sub-block comprises first information, and the first information is used for indicating a first sub-block sent in a cycle period where the first sub-block is located; Determining a sub-block index of the first sub-block and a repeat of the first sub-block, wherein the first descrambling sequence is used for determining the sub-block index, and the first sub-block indicated by the first information is used for determining the repeat of the first sub-block.
  2. 2. A method of communication, the method comprising: A first sub-block of a master information block MIB is sent, wherein a descrambling sequence corresponding to the first sub-block is a first descrambling sequence, the first sub-block comprises first information, and the first information is used for indicating a first sub-block sent in a cycle period where the first sub-block is located; The first descrambling sequence is used for determining a sub-block index of the first sub-block, and the first sub-block indicated by the first information is used for determining the repetition of the first sub-block.
  3. 3. The method of claim 1 or 2, wherein a sub-block index of the first sub-block and a number of repetitions are used to determine a period boundary of the MIB.
  4. 4. A method according to any of claims 1-3, characterized in that 64 sub-blocks of the MIB are used for transmission in 8 cyclic periods, the cyclic period comprising 8 90 ms frame periods, each 90 ms frame period being used for transmission of one sub-block, the first sub-block belonging to any of the 64 sub-blocks.
  5. 5. The method of claim 4 wherein in 64 90 ms frame periods in the 8 loop periods, a j 10ms of an i 90 ms frame period is mapped to one of 64 sub-blocks of the MIB, the 64 sub-blocks are mapped sequentially, a next mapped sub-block of a last sub-block in the 64 sub-blocks is a foremost sub-block in the 64 sub-blocks, each 8 consecutive sub-blocks in the 64 sub-blocks are a group, sub-block indexes of the same group of sub-blocks are the same, an ordering of sub-blocks in the group is the sub-block repetition order, and i and j are integers.
  6. 6. The method of claim 5, wherein the mapping resource for transmitting a sub-block in the 90 ms frame period is 1 sub-block of 10 ms and the transmitted sub-block is one sub-block having a mapping relationship with the 1 sub-block of 10 ms.
  7. 7. The method according to any one of claims 1-6, wherein: If x > z, then y=x-z+s If x < z, y=x-z+ 8+s If x=z, then y=s Where s is a start value of the repetition order, x is a sub-block index of the first sub-block, z is a sub-block index of the first sub-block, and y is a repetition order of the first sub-block.
  8. 8. The method according to any of claims 1-7, wherein the first sub-block includes first bit information, the first bit information being used to indicate a radio frame index, the sub-block index of the first sub-block and to which repetition the second bit information belongs, the first bit information and the second bit information being used in combination to indicate the radio frame index of the first sub-block in a superframe.
  9. 9. A method of communication, comprising: receiving a second sub-block of the master information block MIB in a cyclic period, wherein a descrambling sequence corresponding to the second sub-block is a second descrambling sequence, the cyclic period comprises 8 90 millisecond frame periods, and the mapping resource of a transmission sub-block in each 90 millisecond frame period is 1 to 10 milliseconds; And determining a sub-block index of the second sub-block according to the second descrambling sequence.
  10. 10. A method of communication, the method comprising: Transmitting a second sub-block of the master information block MIB in a cyclic period, wherein a descrambling sequence corresponding to the second sub-block is a second descrambling sequence, the cyclic period comprises 8 90 millisecond frame periods, and the mapping resource of the transmission sub-block in each 90 millisecond frame period is 1 to 10 milliseconds; wherein the second descrambling sequence is used to determine a sub-block index of the second sub-block.
  11. 11. The method according to claim 9 or 10, wherein the 90 ms frame period is one radio frame, and the subframe length in the radio frame is 10 ms.
  12. 12. The method of claim 9 or 10, wherein a sub-block index of the second sub-block is used to determine a periodic boundary of the MIB.
  13. 13. The method of any of claims 9-12, wherein in 8 90 millisecond frame periods within the loop period, a j 10 millisecond of an i 90 millisecond frame period is mapped to one of 8 sub-blocks of the MIB, the 8 sub-blocks being mapped in a sequence, a next mapped sub-block of a last sub-block of the 8 sub-blocks being a foremost sub-block of the 8 sub-blocks, i and j each being an integer.
  14. 14. The method of claim 13, wherein the sub-block transmitted on the 110 ms mapping resource is one sub-block having a mapping relationship with the 110 ms mapping resource.
  15. 15. The method according to any of claims 9-14, wherein the second sub-block comprises first bit information, the first bit information being used to indicate a radio frame index, the sub-block index of the second sub-block corresponding to second bit information, the first bit information and the second bit information being used in combination to indicate the radio frame index of the second sub-block in a superframe.
  16. 16. A method of communication, comprising: receiving a second sub-block of the master information block MIB in a cyclic period, wherein a descrambling sequence corresponding to the second sub-block is a second descrambling sequence, the cyclic period comprises 4 90 millisecond frame periods, and the mapping resource of the transmission sub-block in each 90 millisecond frame period is 1 to 9 milliseconds; And determining a sub-block index of the second sub-block according to the second descrambling sequence.
  17. 17. A method of communication, the method comprising: transmitting a second sub-block of the master information block MIB in a cyclic period, wherein a descrambling sequence corresponding to the second sub-block is a second descrambling sequence, the cyclic period comprises 4 90 millisecond frame periods, and the mapping resource of the transmission sub-block in each 90 millisecond frame period is 1 to 9 milliseconds; wherein the second descrambling sequence is used to determine a sub-block index of the second sub-block.
  18. 18. The method according to claim 16 or 17, wherein the 90 ms frame period is one radio frame, and the subframe length in the radio frame is 10 ms.
  19. 19. The method of any of claims 16-18, wherein a sub-block index of the second sub-block is used to determine a periodic boundary of the MIB.
  20. 20. The method of any of claims 16-19, wherein in the 4 90 millisecond frame period in the loop period, a j 9 millisecond of an i 90 millisecond frame period is mapped to one of 8 sub-blocks of the MIB, the 8 sub-blocks being mapped sequentially, a next mapped sub-block of a last sub-block of the 8 sub-blocks being a foremost sub-block of the 8 sub-blocks, i and j each being an integer.

Description

Communication method and related device Technical Field The embodiment of the application relates to the technical field of communication, in particular to a communication method and a related device. Background A standing document of 3GPP, which represents standardization of an existing satellite constellation, proposes to make a corresponding protocol with a 90ms frame period as a base line in order to consider a 90ms (ms) period of a radio frame structure of an existing constellation (e.g., an iridium system), and the frame structure of an iridium system is shown in fig. 1. The radio frame structure period in the existing standard is 10ms, and each radio frame is composed of 10 subframes of 1 ms. The legislation document also proposes that synchronization under a new frame period and other aspects of the synchronization need to be studied to be compatible with a 90ms frame structure of an existing constellation and a10 ms frame structure in an existing standard, for example, iridium proposes that a certain time slot duration (about 8.28 ms) is used in one 90ms frame period for 3 GPP-based internet of things (Internet of Things, ioT) satellite communication, and since the existing standard generally takes a subframe as a unit and the duration is 1ms, 8 continuous downlink subframes and 8 uplink subframes can be used in one 90ms frame period for narrowband internet of things (Narrow Band Internet of Things, NB-IoT) satellite communication, and other resources can still be used for services of the existing iridium system, which can realize coexistence of two systems of an iridium system protocol (i.e. a private protocol) and a 3GPP protocol (i.e. an existing protocol) in the 90ms frame period. The master information block (Master Indication Block, MIB) of the existing NB IoT uses a fixed scheduling period of 640ms, as shown in fig. 2, the MIB message is encoded into 1600 bits of data, the 1600 bits are divided into 8 equal-length self-decodable sub-blocks (sub-blocks), each sub-block is repeatedly transmitted 8 times, the transmission mode is that one sub-block is transmitted on sub-frame 0 of each radio frame from radio frame 0, thus 64 radio frames (each radio frame occupies only sub-frame 0) are required for completing one MIB transmission, and if the mode is time division duplex (Time Division Duplexing, TDD) the sub-blocks are transmitted on sub-frame 9. During transmission, each sub-block uses different scrambling sequences, and the terminal can obtain the index of the sub-block and the repeated index sent by the network side according to the decoding result of the sub-block of the MIB, so that the implicit acquisition needs 640ms wireless frame timing indicated by 6 bits, and in addition, the system frame number indicated by 10 bits (also called wireless frame) can be obtained together with the 4 bit system frame number indicated in the sub-block of the MIB, namely, the frame of 1024 wireless frames is good, and therefore, each wireless frame index in one superframe period can be determined. How to complete MIB transmission in a system in which iridium system protocols and 3GPP protocols coexist is a technical problem to be solved by those skilled in the art. Disclosure of Invention The embodiment of the application discloses a communication method and a related device, wherein a wireless frame index can be determined through decoding of an MIB sub-block, so that the complexity of indication and determination can be reduced. In a first aspect, an embodiment of the present application provides a communication method, including: The method comprises the steps of receiving a first sub-block of a master information block MIB, wherein a descrambling sequence corresponding to the first sub-block is a first descrambling sequence, the first sub-block comprises first information, the first information is used for indicating a first sub-block sent in a cycle period (for example, 8 720 ms) where the first sub-block is located, optionally, 8 cycle periods can be included in a complete repetition period, the cycle indexes of the 8 cycle periods are sequentially 0, 1,2, 3,4, 5, 6 and 7 according to time sequence, and the sub-block indexes of the first sub-block sent in each cycle period are sequentially 0, 1,2, 3,4, 5, 6 and 7, so that the sub-block indexes are identical to the cycle period indexes or have a one-to-one correspondence, and the first information can also directly indicate the cycle period indexes so as to realize indirect indication of the sub-block indexes of the first sub-block in the cycle period. Determining a sub-block index of the first sub-block and a repeat of the first sub-block, wherein the first descrambling sequence is used for determining the sub-block index, and the first sub-block indicated by the first information is used for determining the repeat of the first sub-block. The method is adopted, first information is carried in a first sub-block, the first information indicates a first