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Transmission scheduling method and device

A technology for transmission scheduling and equipment, which is applied in the field of transmission scheduling methods and equipment, can solve problems such as inaccurate resource scheduling, inappropriate precoding matrix selection, resource scheduling, and influence of precoding matrix selection link adaptive accuracy, etc., to achieve Effect of reducing influence and improving CoMP transmission performance

Active Publication Date: 2014-10-15
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] First, resource scheduling is inaccurate;
[0014] Second, the choice of precoding matrix is ​​not appropriate;
[0015] Third, the link adaptation is not accurate
[0017] To sum up, the existing central scheduling method for coordinated multi-point transmission is designed for ideal backhaul. In the case of non-ideal backhaul, due to the impact of backhaul transmission delay, the accuracy of resource scheduling, precoding matrix selection, and link adaptation will all be affected. is affected, thereby affecting CoMP transmission performance

Method used

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  • Transmission scheduling method and device
  • Transmission scheduling method and device
  • Transmission scheduling method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] This embodiment is a CS / CB scheduling embodiment of a non-ideal backhaul central scheduling information interaction method;

[0090] Make the following assumptions about the system:

[0091] There are 3 base stations in the system for cooperative transmission: base station 1, base station 2 and base station 3, each of the three base stations has 2 service user terminals, UE1 under base station 1 (CoMP user terminal, the measurement set includes base station 1 and base station 3) and UE2; UE3 (CoMP user terminal, the measurement set includes base station 2 and base station 3) and UE4 under base station 2; UE5 and UE6 under base station 3. Those not marked as CoMP user terminals are non-CoMP user terminals.

[0092] The above three base stations have one scheduling resource;

[0093] The information exchange process between the cooperative base station and the CCN is as follows:

[0094] Step 1: All user terminals report CSI, and each base station transmits the CSI rep...

Embodiment 2

[0104] This embodiment is a DPS / DPB scheduling embodiment of a non-ideal backhaul central scheduling information interaction method;

[0105] The system assumption is the same as that in the first embodiment.

[0106] The information exchange process between the cooperative base station and the CCN is as follows:

[0107] Step 1: All user terminals report CSI, and each base station transmits the CSI information reported by each user terminal to the CCN through backhaul.

[0108] Step 2: CCN schedules base station 1 to be silent, schedules single-point transmission of UE4 for base station 2, and schedules DPS / DPB transmission of UE1 for base station 3;

[0109] The CCN transmits scheduling information to base station 1, the scheduling information includes: the information field indicating silence is "1";

[0110] The CCN transmits scheduling information to the base station 2, and the scheduling information includes: the user terminal identifier "100" of UE4 in the scheduling ...

Embodiment 3

[0117] This embodiment is a JT scheduling embodiment of an information interaction method for non-ideal backhaul central scheduling;

[0118] The system assumptions are the same as those in Embodiment 1 except for the following content: UE1 is a CoMP user terminal, and the measurement set includes base station 1, base station 2, and base station 3; UE3 is a non-CoMP user terminal;

[0119] The information exchange process between the cooperative base station and the CCN is as follows:

[0120] Step 1: All user terminals report CSI, and each base station transmits the CSI reported by each user terminal to the CCN through backhaul.

[0121] Step 2: CCN dispatches base station 1 and base station 2 to perform JT transmission for UE1, and base station 3 performs single-point transmission for UE5;

[0122] The CCN transmits scheduling information for base station 1, and the scheduling information includes: the user terminal identifier "001" of UE1 in the scheduling user identifier ...

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Abstract

An embodiment of the invention discloses a transmission scheduling method and device which relate to the field of wireless communication and are used for improving the transmission performance of coordinated multiple points CoMP. According to the transmission scheduling method and device, a center cooperation node, according to channel information of a user terminal sent by each cooperation base station, carries out transmission scheduling, then, obtains scheduling information corresponding to each scheduling resource and used for the cooperation base station to carry out data transmission scheduling and / or determine transmission parameters, and sends the scheduling information to the corresponding cooperation base station; and the cooperation base station, according to the scheduling information sent by the center cooperation node and the channel state information CSI of the user terminal received recently, determines data transmission parameters. With the method and device in the invention, the transmission performance of the CoMP can be improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a transmission scheduling method and equipment. Background technique [0002] In the long term evolution-advance (LTE-A) system, in order to reduce the neighbor cell interference of the cell coverage edge user terminal (UE) and improve the experience of the cell edge user terminal, a coordinated-multiple point (coordinated-multiple -point, CoMP) transmission technology. Coordinated multi-point transmission technology is the cooperation between multiple geographically separated transmission points (transmission point, TP). Generally, multiple transmission points refer to base stations of different cells, or a base station of a cell and multiple remote radio heads (remote radio heads, RRHs) controlled by it. Coordinated multi-point transmission technology can be divided into downlink cooperative transmission and uplink joint reception. Downlink coordinated transmiss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04L5/00H04W72/12H04B7/26H04L5/0035H04L5/0058
Inventor 倪浩高秋彬
Owner DATANG MOBILE COMM EQUIP CO LTD
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