IP Library › Granted Patent US 11,956,803

Granted Patent B2

US 11,956,803 · App. 17/487,440 · Granted Apr 9, 2024

Method and apparatus for determining transmission resource

Inventors: Fengwei Liu (Chengdu, CN); Jing Qiu (Chengdu, CN); Lei Chen (Shenzhen, CN)

Assignee: HUAWEI TECHNOLOGIES CO., LTD.

H04W72/27 H04W16/28 H04W72/0446 H04W72/046

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Quick Facts

Patent No.: US 11,956,803
App. No.: 17/487,440
Granted: Apr 9, 2024
Kind: B2

External Links

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Abstract

This application provides a method and apparatus for determining a resource in a relay system. By receiving resource indication information transmitted by an upper-level node, a first node determines the availability of a symbol in a first resource set located between a first hard resource set and a second hard resource set, and communicates with the upper-level node on the symbol based on the resource indication information to maximally improve resource utilization.

Claims (191)

1. An apparatus, wherein the apparatus is applied to a first node and configured to determine a resource in a relay system and comprises:

a transceiver, configured to receive resource indication information transmitted by an upper-level node, wherein the resource indication information indicates a transmission direction of a first resource set, the first resource set is located between a first hard resource set and a second hard resource set, and the first hard resource set and the second hard resource set are consecutive hard resources; and

a processor, configured to determine a first threshold x and a second threshold y based on the resource indication information, wherein

when t 3 −t 1 ≥x, and t 2 −t 4 ≥y, the processor is further configured to determine that a symbol in the first resource set is available, wherein

t 1 is an end time of a last symbol in the first hard resource set, t 2 is a start time of a first symbol in the second hard resource set, t 3 is a start time of the symbol in the first resource set, and t 4 is an end time of the symbol in the first resource set; and

the transceiver is further configured to communicate with the upper-level node on the symbol in the first resource set based on the resource indication information.

2. The apparatus according to claim 1 , wherein the processor is configured to:

when a transmission direction of the last symbol in the first hard resource set is downlink transmission, and the transmission direction of the first resource set is downlink transmission, determine the first threshold x=T TR ; or

when a transmission direction of the last symbol in the first hard resource set is downlink transmission, and the transmission direction of the first resource set is uplink transmission, determine x=0; or

when a transmission direction of the last symbol in the first hard resource set is uplink transmission, and the transmission direction of the first resource set is downlink transmission, determine x=0; or

when a transmission direction of the last symbol in the first hard resource set is uplink transmission, and the transmission direction of the first resource set is uplink transmission, determine x=T RT ; or

when a transmission direction of the first symbol in the second hard resource set is downlink transmission, and the transmission direction of the first resource set is downlink transmission, determine y=T RT ; or

when a transmission direction of the first symbol in the second hard resource set is downlink transmission, and the transmission direction of the first resource set is uplink transmission, determine y=0; or

when a transmission direction of the first symbol in the second hard resource set is uplink transmission, and the transmission direction of the first resource set is downlink transmission, determine y=0; or

when a transmission direction of the first symbol in the second hard resource set is uplink transmission, and the transmission direction of the first resource set is uplink transmission, determine y=T TR , wherein

T RT is a receive-transmit transition time of the first node, and T TR is a transmit-receive transition time of the first node.

3. The apparatus according to claim 1 , wherein

when the transmission direction of the last symbol in the first hard resource set is downlink transmission, and the transmission direction of the first resource set is downlink transmission, t 3 −t 1 and t 2 −t 4 are determined by Δ DD , wherein

⁢

delta

;

when the transmission direction of the last symbol in the first hard resource set is downlink transmission, and the transmission direction of the first resource set is uplink transmission, t 3 −t 1 and t 2 −t 4 are determined by Δ UD , wherein Δ UD =TA+TA offset −Δ DD ; or

when the transmission direction of the last symbol in the first hard resource set is uplink transmission, and the transmission direction of the first resource set is downlink transmission, t 3 −t 1 and t 2 −t 4 are determined by Δ DU , wherein Δ DU =T g +Δ DD ; or

when the transmission direction of the last symbol in the first hard resource set is uplink transmission, and the transmission direction of the first resource set is uplink transmission, t 3 −t 1 and t 2 −t 4 are determined by Δ UU , wherein Δ UU =TA+TA offset −Δ DD −T g ; or

when the transmission direction of the first symbol in the second hard resource set is downlink transmission, and the transmission direction of the first resource set is downlink transmission, t 3 −t 1 and t 2 −t 4 are determined by Δ DD , wherein

⁢

delta

;

when the transmission direction of the first symbol in the second hard resource set is downlink transmission, and the transmission direction of the first resource set is uplink transmission, t 3 −t 1 and t 2 −t 4 are determined by Δ UD , wherein Δ UD TA+TA offset −Δ DD ; or

when the transmission direction of the first symbol in the second hard resource set is uplink transmission, and the transmission direction of the first resource set is downlink transmission, t 3 −t 1 and t 2 −t 4 are determined by Δ DU , wherein Δ DU =T g +Δ DD ; or

when the transmission direction of the first symbol in the second hard resource set is uplink transmission, and the transmission direction of the first resource set is uplink transmission, t 3 −t 1 and t 2 −t 4 are determined by Δ UU , wherein Δ UU =TA+TA offset −Δ DD −T g , wherein

TA is a timing advance, T delta is a timing offset, TA offset is a timing advance offset, and T g is a receive/transmit transition time difference of an access link of the first node.

4. The apparatus according to claim 3 wherein

the processor is further configured to switch from a first upper-level node to a second upper-level node, wherein

the transceiver is further configured to transmit T delta or Δ DD to the second upper-level node.

5. The apparatus according to claim 3 , wherein the transceiver is further configured to report Δ UU , or

⁢

or T g to the upper-level node.

6. The apparatus according to claim 3 , wherein the transceiver is further configured to receive a TA update command transmitted by the upper-level node, so that the first node updates Δ UU based on the TA update command.

7. An apparatus, wherein the apparatus is applied to a second node and configured to determine a resource in a relay system and comprises:

a processor, configured to obtain a first hard resource set and a second hard resource set of a first node, wherein the first hard resource set and the second hard resource set are consecutive hard resources, and the second node is an upper-level node of the first node, wherein

the processor is further configured to determine a first resource set, wherein the first resource set is located between the first hard resource set and the second hard resource set;

the processor is further configured to obtain a first threshold x and a second threshold y; and

when a time difference D h between a start time of a symbol in the first resource set and an end time of a last symbol in the first hard resource set is greater than x, and a time difference D e between a start time of a first symbol in the second hard resource set and an end time of the symbol in the first resource set is greater than y, the processor is further configured to determine that the symbol in the first resource set is available; and

a transceiver, configured to perform data transmission with the first node using the symbol in the first resource set.

8. The apparatus according to claim 7 , wherein the processor is configured to:

when a transmission direction of the last symbol in the first hard resource set is downlink transmission, and a transmission direction of the first resource set is downlink transmission, determine the first threshold x=T TR ; or

when a transmission direction of the last symbol in the first hard resource set is downlink transmission, and a transmission direction of the first resource set is uplink transmission, determine x=0; or

when a transmission direction of the last symbol in the first hard resource set is uplink transmission, and a transmission direction of the first resource set is downlink transmission, determine x=0; or

when a transmission direction of the last symbol in the first hard resource set is uplink transmission, and a transmission direction of the first resource set is uplink transmission, determine x=T RT ; or

when a transmission direction of the first symbol in the second hard resource set is downlink transmission, and a transmission direction of the first resource set is downlink transmission, determine y=T RT ; or

when a transmission direction of the first symbol in the second hard resource set is downlink transmission, and a transmission direction of the first resource set is uplink transmission, determine y=0; or

when a transmission direction of the first symbol in the second hard resource set is uplink transmission, and a transmission direction of the first resource set is downlink transmission, determine y=0; or

when a transmission direction of the first symbol in the second hard resource set is uplink transmission, and a transmission direction of the first resource set is uplink transmission, determine y=T TR , wherein

T RT is a receive-transmit transition time of the first node, and T TR is a transmit-receive transition time of the first node.

9. The apparatus according to claim 7 , wherein the transceiver is further configured to transmit resource indication information to the first node, wherein the resource indication information indicates the transmission direction of the first resource set.

10. The apparatus according to claim 7 , wherein the transceiver is further configured receive Δ UU , or

⁢

or T g reported by the first node, wherein TA is a timing advance, Δ UU is a time difference between an uplink transmit frame of a backhaul link of the first node and a boundary of an uplink receive frame of an access link of the first node, and T g is a receive/transmit transition time difference of the access link of the first node.

11. The apparatus according to claim 7 , wherein when the transmission direction of the last symbol in the first hard resource set is downlink transmission, and the transmission direction of the first resource set is downlink transmission, D h and D e are determined by Δ DD , wherein

⁢

delta

;

when the transmission direction of the last symbol in the first hard resource set is downlink transmission, and the transmission direction of the first resource set is uplink transmission, D h and D e are determined by Δ UD , wherein Δ UD =TA+TA offset −Δ DD ; or

when the transmission direction of the last symbol in the first hard resource set is uplink transmission, and the transmission direction of the first resource set is downlink transmission, D h and D e are determined by Δ DU , wherein Δ DU =T g +Δ DD ; or

when the transmission direction of the last symbol in the first hard resource set is uplink transmission, and the transmission direction of the first resource set is uplink transmission, D h and D e are determined by A UU , wherein Δ UU =TA+TA offset −Δ DD −T g ; or

TA is the timing advance, T delta is a timing offset, TA offset is a timing advance offset, and T g is the receive/transmit transition time difference of the access link of the first node.

12. The apparatus according to claim 7 , wherein the transceiver is further configured to transmit a TA update command to the first node, wherein the TA update command is used by the first node to update Δ DD , Δ UU , Δ UD , or Δ DU .

13. A method for determining a resource in a relay system, comprising:

receiving, by a first node, resource indication information transmitted by an upper-level node, wherein the resource indication information indicates a transmission direction of a first resource set, the first resource set is located between a first hard resource set and a second hard resource set, and the first hard resource set and the second hard resource set are consecutive hard resources;

determining, by the first node, a first threshold x and a second threshold y based on the resource indication information;

when t 3 −t 1 ≥x, and t 2 −t 4 ≥y, determining, by the first node, that a symbol in the first resource set is available, wherein

communicating, by the first node, with the upper-level node using the symbol in the first resource set based on the resource indication information.

14. The method according to claim 13 , wherein the determining, by the first node, a first threshold x and a second threshold y based on the resource indication information comprises:

when a transmission direction of the last symbol in the first hard resource set is downlink transmission, and the transmission direction of the first resource set is uplink transmission, x=0; or

when a transmission direction of the last symbol in the first hard resource set is uplink transmission, and the transmission direction of the first resource set is downlink transmission, x=0; or

when a transmission direction of the last symbol in the first hard resource set is uplink transmission, and the transmission direction of the first resource set is uplink transmission, x=T RT ; or

when a transmission direction of the first symbol in the second hard resource set is downlink transmission, and the transmission direction of the first resource set is uplink transmission, y=0; or

when a transmission direction of the first symbol in the second hard resource set is uplink transmission, and the transmission direction of the first resource set is downlink transmission, y=0; or

T RT is a receive-transmit transition time of the first node, and T TR is a transmit-receive transition time of the first node.

15. The method according to claim 13 , wherein

⁢

delta

;

when the transmission direction of the last symbol in the first hard resource set is uplink transmission, and the transmission direction of the first resource set is uplink transmission, t 3 −t 1 and t 2 −t 4 are determined by A UU , wherein Δ UU =TA+TA offset −Δ DD −T g ; or

⁢

delta

;

TA is a timing advance, T delta is a timing offset, TA offset is a timing advance offset, and Ty is a receive-transmit time difference of an access link of the first node.

16. The method according to claim 15 , further comprising:

switching, by the first node, from a first upper-level node to a second upper-level node; and

transmitting, by the first node, T delta or Δ DD to the second upper-level node.

17. The method according to claim 15 , further comprising:

reporting, by the first node, Δ UU , or

or T g to the upper-level node.

18. The method according to claim 15 , further comprising:

receiving, by the first node, a TA update command transmitted by the upper-level node and updating Δ UU based on the TA update command.

19. A method for determining a resource in a relay system, comprising:

obtaining, by a second node, a first hard resource set and a second hard resource set of a first node, wherein the first hard resource set and the second hard resource set are consecutive hard resources, and the second node is an upper-level node of the first node;

determining, by the second node, a first resource set, wherein the first resource set is located between the first hard resource set and the second hard resource set;

obtaining, by the second node, a first threshold x and a second threshold y;

when a time difference D h between a start time of a symbol in the first resource set and an end time of a last symbol in the first hard resource set is greater than x, and a time difference D e between a start time of a first symbol in the second hard resource set and an end time of the symbol in the first resource set is greater than y, determining, by the second node, that the symbol in the first resource set is available; and

performing, by the second node, data transmission with the first node on the symbol in the first resource set.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2024

From: LIU, FENGWEI; QIU, JING; CHEN, LEI

To: HUAWEI TECHNOLOGIES CO., LTD.

Reel/Frame 066554/0693 →

Priority Claims (2)

CN 201910253084.2 · Mar 29, 2019 · national

CN 201910266905.6 · Apr 3, 2019 · national

Continuity (2)

Continuation PCTCN2020075401 · Feb 14, 2020

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