Timing advance indication method, communication apparatus, and storage medium
AssigneeHuawei Technologies Co., Ltd.
InventorsXiaolu Wang, Hejia Luo, Rong Li, Bin Wang, Jun Wang
Life of this patent
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Abstract
The present disclosure relates to timing advance indication methods, communication apparatuses, and storage medium. In one example method, a first device determines a quantity of extended bits and a location of the extended bit of a timing advance (TA) instruction based on a subcarrier spacing of a second device. The first device sends the TA instruction to the second device, where the TA instruction includes the extended bit, and a quantity of bits of the TA instruction is greater than 12.
Claims20
A method, comprising:
- determining, by a first device in a non-terrestrial network (NTN), whether a timing advance (TA) value indicated by a TA instruction meets a requirement of the NTN, wherein the requirement of the NTN includes a maximum value that needs to be represented by a TA time adjustment value, and the maximum value is determined based on a type of the NTN and a cell size of the NTN;
- and
- in response to determining that the TA value indicated by the TA instruction does not meet the requirement of the NTN:
- determining, by the first device and based on a subcarrier spacing of a second device, a quantity of extended bits to be added to the TA instruction and a location in the TA instruction to add an extended to generate an extended TA instruction;
- and
- sending, by the first device, the extended TA instruction to the second device, wherein the extended TA instruction comprises the extended bit and indicates a round-trip transmission delay or a round-trip transmission delay difference between the first device and the second device, and a quantity of bits of the extended TA instruction is greater than 12.
A method, comprising:
- receiving, by a second device in a non-terrestrial network (NTN), an extended timing advance (TA) instruction from a first device, wherein the extended TA instruction is generated by the first device based on determining that a TA value indicated by a TA instruction does not meet a requirement of the NTN, the requirement of the NTN includes a maximum value that needs to be represented by a TA time adjustment value, the maximum value is determined based on a type of the NTN and a cell size of the NTN, the extended TA instruction comprises an extended bit and indicates a round-trip transmission delay or a round-trip transmission delay difference between the first device and the second device, and a quantity of bits of the extended TA instruction is greater than 12;
- and
- determining, by the second device, a quantity of extended bits added to the TA instruction and a location of the extended bit in the extended TA instruction based on a subcarrier spacing of the second device.
A communication apparatus, comprising a memory and at least one processor, wherein the memory is coupled to the at least one processor and stores programming instructions for execution by the at least one processor to cause the communication apparatus to perform operations comprising:
- determining whether a timing advance (TA) value indicated by a TA instruction meets a requirement of a non-terrestrial network (NTN), wherein the requirement of the NTN includes a maximum value that needs to be represented by a TA time adjustment value, and the maximum value is determined based on a type of the NTN and a cell size of the NIN;
- and
- in response to determining that the TA value indicated by the TA instruction does not meet the requirement of the NTN:
- determining, based on a subcarrier spacing of a second device, a quantity of extended bits to be added to the TA instruction and a location in the TA instruction to add an extended bit to generate an extended TA instruction;
- and
- sending the extended TA instruction to the second device, wherein the extended TA instruction comprises the extended bit and indicates a round-trip transmission delay or a round-trip transmission delay difference between the communication apparatus and the second device, and a quantity of bits of the extended TA instruction is greater than 12.
Dependencies are inferred from the claim text.