Frequency hopping processing method and apparatus

• US 9,906,266 B2
• Filed: 05/10/2016
• Issued: 02/27/2018
• Est. Priority Date: 11/11/2013
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Tang, Zhenfei, Li, Zhongfeng
• Primary Examiner(s): Bayard, Emmanuel
• Application Number:
  US15/150,711
• Publication Number:
  US 20160323011A1
• Time in Patent Office: 658 Days
• Field of Search: 375130-132
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A frequency hopping processing method and apparatus are disclosed, where user equipment receives frequency hopping information, which is sent by a network device, of an extended transmission time interval (TTI); and determines a frequency hopping area of the extended TTI according to the frequency hopping information of the extended TTI. The frequency hopping area of the extended TTI and a frequency hopping area of a normal TTI do not overlap in frequency, and during M-PUSCH frequency hopping of each extended TTI, the user equipment can hop into a corresponding M-PUSCH frequency hopping area according to a preset frequency hopping pattern, and does not hop into a PUSCH frequency hopping area, so that a resource conflict does not exist when M-PUSCH frequency hopping of an extended TTI and PUSCH frequency hopping of a 1 ms TTI are performed at the same time.

Claims

1. A frequency hopping processing method, comprising:

receiving, by user equipment, frequency hopping information of an extended transmission time interval (TTI) from a network device, wherein the extended TTI is a HI whose time length is greater than 1 millisecond;

determining, by the user equipment, a frequency hopping area of the extended TTI according to the frequency hopping information of the extended TTI;

wherein the frequency hopping information of the extended TTI comprises a frequency hopping offset parameter of the extended TTI; and

determining, by the user equipment, a frequency hopping area of the extended TTI according to the frequency hopping information of the extended TTI comprises;

determining, by the user equipment, a frequency hopping initial location of the extended TTI according to the frequency hopping offset parameter of the extended TTI,

determining a length of the frequency hopping area of the extended TTI according to a frequency hopping offset parameter of a normal TTI and the frequency hopping offset parameter of the extended TTI, wherein the normal TTI is a TTI whose time length is equal to 1 millisecond, and

determining the frequency hopping area of the extended TTI according to the frequency hopping initial location of the extended TTI and the length of the frequency hopping area of the extended TTI that are determined.

2. The method according to claim 1, wherein after determining, by the user equipment, a frequency hopping area of the extended TTI according to the frequency hopping information of the extended TTI, the method further comprises:

determining, by the user equipment, a quantity of resource blocks in the frequency hopping area of the extended TTI according to the determined frequency hopping area of the extended TTI and a preset resource block size of the extended TTI; and

determining, by the user equipment, numbers of the resource blocks in the frequency hopping area of the extended TTI according to the quantity of the resource blocks in the frequency hopping area of the extended TTI.

3. The method according to claim 2, wherein after determining, by the user equipment, numbers of the resource blocks in the frequency hopping area of the extended TTI, the method comprises:

receiving, by the user equipment, a number of a virtual resource block in which frequency hopping of the extended TTI is located; and

determining, by the user equipment according to the number of the virtual resource block and a mapping relationship between the number of the virtual resource block and a number of a physical resource block, the number of the physical resource block in which the frequency hopping of the extended TTI is located.

4. The method according to claim 3, wherein determining, by the user equipment according to the number of the virtual resource block and a mapping relationship between the number of the virtual resource block and a number of a physical resource block, the number of the physical resource block in which the frequency hopping of the extended TTI is located comprises:

determining, by the user equipment according to the number of the virtual resource block, the quantity of the resource blocks in the frequency hopping area, and a timeslot number of the extended TTI, the number of the physical resource block in which the frequency hopping of the extended TTI is located;

or

determining, by the user equipment according to the number of the virtual resource block, the quantity of the resource blocks in the frequency hopping area, and a subframe number of the extended TTI, the number of the physical resource block in which the frequency hopping of the extended TTI is located.

5. The method according to claim 3, wherein determining, by the user equipment according to the number of the virtual resource block and a mapping relationship between the number of the virtual resource block and a number of a physical resource block, the number of the physical resource block in which the frequency hopping of the extended TTI is located comprises:

determining, by the user equipment according to the number of the virtual resource block, the quantity of the resource blocks in the frequency hopping area, and a first function ƒ

_m(i), the number of the physical resource block in which the frequency hopping of the extended TTI is located, wherein i indicates a subframe number or a timeslot number of the extended TTI, and the first function ƒ

_m(i) is a value determined according to the subframe number or a serial number of current transmission.

6. The method according to claim 5, wherein determining, by the user equipment according to the number of the virtual resource block, the quantity of the resource blocks in the frequency hopping area, and a first function ƒ

_m(i), the number of the physical resource block in which the frequency hopping of the extended TTI is located, wherein i indicates a subframe number or a timeslot number of the extended TTI comprises;

determining, by the user equipment according to the number of the virtual resource block, the quantity of the resource blocks in the frequency hopping area, the first function ƒ

_m(i), a quantity of subbands in the frequency hopping area, and a second function ƒ

_hop(i), the number of the physical resource block in which the frequency hopping of the extended TTI is located, wherein i indicates a subframe number or a timeslot number of the extended TTI, and the second function ƒ

_hop(i) is a value recursively determined according to a pseudo-random sequence.

7. The method according to claim 1, wherein after determining, by the user equipment, a frequency hopping area of the extended TTI according to the frequency hopping information of the extended TTI, the method further comprises:

acquiring, by the user equipment, a first timeslot-lowest physical resource block n_PRB^S1(i) according to an indication of downlink control information; and

determining, according to the first timeslot-lowest physical resource block n_PRB^S1(i), that a second timeslot-lowest physical resource block is (└

N_RB^sb/2┘

+n_PRB^S1(i))mod N_RB^sb, wherein

8. User equipment, comprising:

a receiver, configured to receive frequency hopping information of an extended transmission time interval (TTI) from a network device;

a processor, configured to determine a frequency hopping area of the extended TTI according to the frequency hopping information of the extended TTI;

wherein the frequency hopping information of the extended TTI comprises a frequency hopping offset parameter of the extended TTI; and

the processor is configured to;

determine a frequency hopping initial location of the extended TTI according to the frequency hopping offset parameter of the extended TTI,

determine a length of the frequency hopping area of the extended TTI according to a frequency hopping offset parameter of a normal TTI and the frequency hopping offset parameter of the extended TTI, and

determine the frequency hopping area of the extended TTI according to the frequency hopping initial location of the extended TTI and the length of the frequency hopping area of the extended TTI that are determined.

9. The user equipment according to claim 8, wherein the processor is further configured to:

determine a quantity of resource blocks in the frequency hopping area of the extended TTI according to the determined frequency hopping area of the extended TTI and a preset resource block size of the extended TTI; and

determine numbers of the resource blocks in the frequency hopping area of the extended TTI according to the quantity of the resource blocks in the frequency hopping area of the extended TTI.

10. The user equipment according to claim 9, wherein:

the receiver is further configured to;

receive a number of a virtual resource block in which frequency hopping of the extended TTI is located; and

the processor is further configured to;

determine, according to the number of the virtual resource block and a mapping relationship between the number of the virtual resource block and a number of a physical resource block, the number of the physical resource block in which the frequency hopping of the extended TTI is located.

11. The user equipment according to claim 10, wherein the processor is further configured to:

determine, according to the number of the virtual resource block, the quantity of the resource blocks in the frequency hopping area, and a timeslot number of the extended TTI, the number of the physical resource block in which the frequency hopping of the extended TTI is located;

or

determine, according to the number of the virtual resource block, the quantity of the resource blocks in the frequency hopping area, and a subframe number of the extended TTI, the number of the physical resource block in which the frequency hopping of the extended TTI is located.

12. The user equipment according to claim 10, wherein the processor is further configured to:

determine, according to the number of the virtual resource block, the quantity of the resource blocks in the frequency hopping area, and a first function ƒ

_m(i), the number of the physical resource block in which the frequency hopping of the extended TTI is located, wherein i indicates a subframe number or a timeslot number of the extended TTI, and the first function ƒ

_m(i) is a value determined according to the subframe number or a serial number of current transmission.

13. The user equipment according to claim 12, wherein the processor is further configured to:

determine, according to the number of the virtual resource block, the quantity of the resource blocks in the frequency hopping area, the first function ƒ

_m(i), a quantity of subbands in the frequency hopping area, and a second function ƒ

_hop(i), the number of the physical resource block in which the frequency hopping of the extended TTI is located, wherein i indicates a subframe number or a timeslot number of the extended TTI, and the second function ƒ

_hop(i) is a value recursively determined according to a pseudo-random sequence.

14. The user equipment according to claim 8, wherein the processor is further configured to:

acquire a first timeslot-lowest physical resource block n_PRB^S1(i) according to an indication of downlink control information; and

determine, according to the first timeslot-lowest physical resource block n_PRB^S1(i), that a second timeslot-lowest physical resource block is (└

N_RB^sb/2┘

+n_PRB^S1(i))mod N_RB^sb, wherein