Granted Patent B2

US 12,647,171 · App. 17/707,642 · Granted Jun 2, 2026

Inventors: Jianwei Zhou (Hangzhou, CN); Yunfei Qiao (Hangzhou, CN); Hejia Luo (Hangzhou, CN); Chenlei Xu (Hangzhou, CN)

Assignee: Huawei Technologies Co., LTD.

H04B7/06952H04B7/18513H04W36/00837H04W36/322

Abstract

Claims (39)

1 . A beam handover method, comprising:

receiving, by a terminal device, first indication information sent by a network device, wherein the first indication information is carried in bandwidth resource configuration information configuring a bandwidth, the first indication information comprises a first parameter value of a first beam used by the bandwidth, and the first parameter value is a compensation amount of a frequency offset of the first beam generated by relative motion between the terminal device and the network device; and

in response to a beam used by the terminal device to communicate with the network device being handed over from a second beam to the first beam, calculating, by the terminal device, a receive frequency or a transmit frequency of the first beam based on the first parameter value;

wherein the first indication information indicates a normalized value of the first parameter value; and

wherein the normalized value of the first parameter value is calculated by using the first parameter value, a normalization factor, and a multiple factor, and the normalized value is expressed as:

f p_compressed =F(f p /f compress ×α), wherein f p is the first parameter value, f compress is the normalization factor, f p_compressed is the normalized value of the first parameter value, α is the multiple factor, and F(x) represents rounding x.

2 . The method according to claim 1 , wherein the bandwidth resource configuration information is configuration information used to configure a general parameter for a bandwidth part.

3 . The method according to claim 1 , wherein the bandwidth resource configuration information is configuration information used to configure a cell-specific common parameter for a bandwidth part.

4 . The method according to claim 1 , wherein the bandwidth resource configuration information is configuration information used to configure a UE-specific parameter for a bandwidth part.

5 . The method according to claim 1 , wherein the first indication information indicates an index value of the first parameter value.

6 . The method according to claim 1 , wherein the first indication information further comprises information indicating the multiple factor α.

7 . The method according to claim 1 , wherein the method further comprises:

receiving, by the terminal device, second indication information sent by the network device, wherein the second indication information indicates a second parameter value of the second beam; and

wherein the calculating, by the terminal device, a receive frequency or a transmit frequency of the first beam based on the first parameter value comprises:

calculating, by the terminal device, the receive frequency or the transmit frequency of the first beam based on the first parameter value and the second parameter value.

8 . The method according to claim 1 , wherein the method further comprises:

determining, by the terminal device, that the beam used by the terminal device to communicate with the network device is handed over from the second beam to the first beam.

9 . A beam handover method, comprising:

determining, by a network device, a first parameter value, wherein the first parameter value is a compensation amount of a frequency offset of a first beam generated by relative motion between a terminal device and the network device; and

sending, by the network device, first indication information to the terminal device, wherein the first indication information is carried in bandwidth resource configuration information configuring a bandwidth, the first indication information comprises the first parameter value of the first beam used by the bandwidth, and the first parameter value is used by the terminal device to calculate a receive frequency or a transmit frequency of the first beam in response to a beam used by the terminal device to communicate with the network device being handed over from a second beam to the first beam;

wherein the first indication information indicates a normalized value of the first parameter value; and

wherein the normalized value of the first parameter value is calculated by using the first parameter value, a normalization factor, and a multiple factor, and the normalized value is expressed as:

f p_compressed =F(f p /f compress ×α), wherein f p is the first parameter value, f compress is the normalization factor, f p_compressed is the normalized value of the first parameter value, α is the multiple factor, and F(x) represents rounding x.

10 . The method according to claim 9 , wherein the bandwidth resource configuration information is configuration information used to configure a general parameter for a bandwidth part.

11 . The method according to claim 9 , wherein the bandwidth resource configuration information is configuration information used to configure a cell-specific common parameter for a bandwidth part.

12 . The method according to claim 9 , wherein the bandwidth resource configuration information is configuration information used to configure a UE-specific parameter for a bandwidth part.

13 . The method according to claim 9 , wherein the first indication information indicates an index value of the first parameter value.

14 . The method according to claim 9 , wherein the first indication information further comprises information indicating the multiple factor α.

15 . A communications apparatus, comprising at least one processor and a memory, wherein the memory is coupled to the at least one processor and stores programming instructions for execution by the at least one processor to perform operations comprising:

receiving first indication information sent by a network device, wherein the first indication information is carried in bandwidth resource configuration information configuring a bandwidth, the first indication information comprises a first parameter value of a first beam used by the bandwidth, and the first parameter value is a compensation amount of a frequency offset of the first beam generated by relative motion between the communications apparatus and the network device; and

in response to a beam used by the communications apparatus to communicate with the network device being handed over from a second beam to the first beam, calculating a receive frequency or a transmit frequency of the first beam based on the first parameter value;

wherein the first indication information indicates a normalized value of the first parameter value; and

wherein the normalized value of the first parameter value is calculated by using the first parameter value, a normalization factor, and a multiple factor, and the normalized value is expressed as:

f p_compressed =F(f p /f compress ×α), wherein f p is the first parameter value, f compress is the normalization factor, f p_compressed is the normalized value of the first parameter value, α is the multiple factor, and F(x) represents rounding x.

16 . The apparatus according to claim 15 , wherein the bandwidth resource configuration information is configuration information used to configure a general parameter for a bandwidth part.

17 . The apparatus according to claim 15 , wherein the bandwidth resource configuration information is configuration information used to configure a cell-specific common parameter for a bandwidth part.

18 . The apparatus according to claim 15 , wherein the bandwidth resource configuration information is configuration information used to configure a UE-specific parameter for a bandwidth part.

19 . The apparatus according to claim 15 , wherein the first indication information indicates an index value of the first parameter value.

20 . The apparatus according to claim 15 , wherein the first indication information further comprises information indicating the multiple factor α.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (33)