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US 11,147,033 B2Granted
Timing advance determining method and device
AssigneeHuawei Technologies Co., Ltd.
InventorsZhang Zhang, Zhenfei Tang, Fan Wang
Life of this patent
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Abstract
A timing advance determining method and a device are provided. In the method, a network device determines, based on a correspondence between a parameter set and a TA granularity, TA information used by a terminal on an occupied frequency domain resource, where the parameter set includes a subcarrier spacing and a cyclic prefix type of a symbol; the network device sends the TA information to the terminal; and the terminal determines, based on the correspondence between a parameter set and a TA granularity, a TA granularity corresponding to the frequency domain resource occupied by the terminal, and determines, based on the TA granularity and the TA information, a TA value used by the terminal on the occupied frequency domain resource.
Claims18
A method, comprising:
- receiving, by a terminal, first timing advance (TA) information sent by a network device;
- determining, by the terminal based on a correspondence between a first parameter set and a first TA granularity, that the first TA granularity corresponds to a frequency domain resource occupied by the terminal, wherein the first parameter set comprises a first subcarrier spacing (SCS) and a first cyclic prefix (CP) type, wherein the first TA granularity corresponding to the first parameter set is non-inversely proportional to the subcarrier spacing when the CP type is not a normal cyclic prefix (NCP);
- and
- determining, by the terminal based on the first TA granularity and the first TA information, a TA value used by the terminal on the occupied frequency domain resource;
- wherein:
- a maximum timing advance group (TAG) quantity is limited to 4 based on the first parameter set comprising an SCS that is 15 kHz and a CP type that is a normal CP;
- or
- a maximum TAG quantity is limited to 8 based on the first parameter set comprising an SCS that is 30 kHz and a CP type that is a normal CP;
- or
- a maximum TAG quantity is limited to 16 based on the first parameter set comprising an SCS that is 60 kHz;
- or
- a maximum TAG quantity is limited to 8 or 16 based on the first parameter set comprising an SCS that is 60 kHz and a CP type that is an extended CP;
- or
- a maximum TAG quantity is limited to 32 based on the first parameter set comprising an SCS that is 120 kHz and a CP type that is a normal CP.
11 more elements
A network device, comprising:
- a transmitter;
- a processor;
- and
- a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:
- determining, based on a correspondence between a first parameter set and a first timing advance (TA) granularity, TA information to be used by a terminal on an occupied frequency domain resource, wherein the first parameter set comprises a first subcarrier spacing (SCS) and a first cyclic prefix (CP) type, wherein the first TA granularity corresponding to the first parameter set is non-inversely proportional to the subcarrier spacing when the CP type is not a normal cyclic prefix (NCP);
- and
- sending the TA information to the terminal using the transmitter;
- wherein:
- a maximum timing advance group (TAG) quantity is limited to 4 based on the first parameter set comprising an SCS that is 15 kHz and a CP type that is a normal CP;
- or
- a maximum TAG quantity is limited to 8 based on the first parameter set comprising an SCS that is 30 kHz and a CP type that is a normal CP;
- or
- a maximum TAG quantity is limited to 16 based on the first parameter set comprising an SCS that is 60 kHz;
- or
- a maximum TAG quantity is limited to 8 or 16 based on the first parameter set comprising an SCS that is 60 kHz and a CP type that is an extended CP;
- or
- a maximum TAG quantity is limited to 32 based on the first parameter set comprising an SCS that is 120 kHz and a CP type that is a normal CP.
14 more elements
A terminal device, comprising:
- receiver;
- a processor;
- and
- a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:
- receiving, using the receiver, first timing advance (TA) information sent by a network device;
- determining, based on a correspondence between a first parameter set and a first TA granularity, that the first TA granularity corresponds to a frequency domain resource occupied by the terminal device, wherein the first parameter set comprises a first subcarrier spacing (SCS) and a first cyclic prefix (CP) type, wherein the first TA granularity corresponding to the first parameter set is non-inversely proportional to the subcarrier spacing when the CP type is not a normal cyclic prefix (NCP);
- and
- determining, based on the first TA granularity and the first TA information, a TA value used by the terminal device on the occupied frequency domain resource;
- wherein:
- a maximum timing advance group (TAG) quantity is limited to 4 based on the first parameter set comprising an SCS that is 15 kHz and a CP type that is a normal CP;
- or
- a maximum TAG quantity is limited to 8 based on the first parameter set comprising an SCS that is 30 kHz and a CP type that is a normal CP;
- or
- a maximum TAG quantity is limited to 16 based on the first parameter set comprising an SCS that is 60 kHz;
- or
- a maximum TAG quantity is limited to 8 or 16 based on the first parameter set comprising an SCS that is 60 kHz and a CP type that is an extended CP;
- or
- a maximum TAG quantity is limited to 32 based on the first parameter set comprising an SCS that is 120 kHz and a CP type that is a normal CP.
15 more elements
Dependencies are inferred from the claim text.