Transmission Apparatus and Method Based on Dynamic Time Division Duplex and Communication System

• US 20190313418A1
• Filed: 06/24/2019
• Published: 10/10/2019
• Est. Priority Date: 01/06/2017
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: WANG, Weiwei, ZHOU, Hua, WANG, Xin
• Application Number:
  US16/450,268
• Publication Number:
  US 20190313418A1
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 36/20 for optimising the interference level
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

A transmission apparatus and method based on dynamic time division duplex and communication system. The transmission method includes: transmitting reporting information to a plurality of network equipments by user equipment, the reporting information indicating that cross-link interference occurs when the user equipment is scheduled by a first network equipment; receiving scheduling information transmitted by one of the plurality of network equipments; the scheduling information indicates that serving network equipment of the user equipment is changed from the first network equipment to a second network equipment; and performing data transmission by the user equipment with the second network equipment according to the scheduling information.

Claims

1. A user equipment (UE) based on dynamic time division duplex, comprising:

a transmitter configured to transmit reporting information to a plurality of network equipments based on co-channel connectivity, the reporting information indicating that cross-link interference occurs when the UE is scheduled by a first network equipment;

a receiver configured to receive scheduling information transmitted by a second network equipments;

wherein, the scheduling information indicates that a serving network equipment of the UE is changed from the first network equipment to the second network equipment; and

a processor configured to perform data transmission with the second network equipment according to the scheduling information.

2. The UE according to claim 1, wherein the transmitter is configured to transmit the reporting information to the plurality of network equipments in a case where strength of cross-link interference posed to one or more other UEs by the UE when the UE is scheduled by the first network equipment exceeds a first predetermined threshold, and/or, strength of cross-link interference to which the UE is subjected from one or more other UEs when the UE is scheduled by the first network equipment exceeds a second predetermined threshold.

3. The UE according to claim 1, wherein the scheduling information is further used to indicate that a transmission direction of the UE is changed.

4. The UE according to claim 1, wherein the reporting information comprises one or more pieces of the following information:

indication information on whether the UE poses cross-link interference to one or more other UEs;

identification information on serving network equipment where the UE is present when the UE poses cross-link interference to the other UEs;

strength information or strength indication information on cross-link interference posed by the UE to the other UEs;

indication information on whether the UE is subjected to cross-link interference from the other UEs;

identification information on serving network equipment where the UE is present when the UE is subjected to cross-link interference from the other UEs;

strength information or strength indication information on cross-link interference from the other UEs to which the UE is subjected.

5. The UE according to claim 1, wherein the scheduling information comprises one or more pieces of the following information, or the scheduling information comprises index (indices) of one or more pieces of the following information:

indication information on the serving network equipment of the UE;

information on a scheduled transmission direction of the UE;

information on positions of resources allocated for the UE;

information on a modulation coding scheme adopted in data transmission;

information on power adopted when the UE is scheduled to perform uplink data transmission; and

information on a time adopted when the UE is scheduled to perform uplink data transmission.

6. The UE according to claim 5, wherein a part of the one or more pieces of the information is indicated by the scheduling information, and a part of the one or more pieces of the information is preconfigured via signaling.

7. The UE according to claim 1, wherein the receiver is further configured to receive configuration information for performing measurement on cross-link interference configured by the network equipment;

and

the processor is further configured to perform measurement on cross-link interference.

8. A network equipment based on dynamic time division duplex, comprising:

a receiver configured to receive reporting information transmitted by a user equipment (UE), the reporting information indicating that cross-link interference occurs when the UE is scheduled by a first network equipment;

a processor configured to generate scheduling information indicating that a serving network equipment of the UE is changed from the first network equipment to a second network equipment; and

a transmitter configured to transmit the scheduling information to the UE, the scheduling information being used by the UE to perform data transmission with the second network equipment.

9. The network equipment according to claim 8, wherein the UE is configured to transmit the reporting information to a plurality of network equipments based on co-channel connectivity in a case where strength of cross-link interference posed to one or more other UEs by the UE when the UE is scheduled by the first network equipment exceeds a first predetermined threshold, and/or, strength of cross-link interference to which the UE is subjected from one or more other UEs when the UE is scheduled by the first network equipment exceeds a second predetermined threshold.

10. The network equipment according to claim 8, wherein the scheduling information is further used to indicate that a transmission direction of the UE is changed.

11. The network equipment according to claim 8, wherein the reporting information comprises one or more pieces of the following information:

indication information on whether the UE poses cross-link interference to one or more other UEs;

identification information on serving network equipment where the UE is present when the UE poses cross-link interference to the other UEs;

strength information or strength indication information on cross-link interference posed by the UE to the other UEs;

indication information on whether the UE is subjected to cross-link interference from the other UEs;

identification information on serving network equipment where the UE is present when the UE is subjected to cross-link interference from the other UEs;

strength information or strength indication information on cross-link interference from the other UEs to which the UE is subjected.

12. The network equipment according to claim 8, wherein the scheduling information comprises one or more pieces of the following information, or the scheduling information comprises index (indices) of one or more pieces of the following information:

indication information on the serving network equipment of the UE;

information on a scheduled transmission direction of the UE;

information on positions of resources allocated for the UE;

information on a modulation coding scheme adopted in data transmission;

information on power adopted when the UE is scheduled to perform uplink data transmission; and

information on a time adopted when the UE is scheduled to perform uplink data transmission.

13. The network equipment according to claim 12, wherein a part of the one or more pieces of the information is indicated by the scheduling information, and a part of the one or more pieces of the information is preconfigured via signaling.

14. The network equipment according to claim 8, wherein the processor is further configured to configure the UE to perform measurement on cross-link interference.

15. A communication system, comprising:

a user equipment configured to transmit reporting information to a plurality of network equipments based on co-channel connectivity, the reporting information indicating that cross-link interference occurs when the UE is scheduled by a first network equipment;

receive scheduling information transmitted by a second network equipments;

wherein, the scheduling information indicates that a serving network equipment of the UE is changed from the first network equipment to the second network equipment; and

perform data transmission with the second network equipment according to the scheduling information; and

a network equipment configured to receive the reporting information transmitted by the UE;

generate and transmit the scheduling information to the UE.