Method and device for transmitting bandwidth information

A technology for transmission bandwidth and bandwidth, applied in the field of communication, can solve the problems of reference signal sequence error, inability to determine the system bandwidth transmission bandwidth, inability to correctly demodulate downlink data, etc.

Active Publication Date: 2014-12-17
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] To sum up, in a CoMP system, multiple transmission points (or multiple cells) are involved, and the system bandwidths of multiple cells may be different, so the UE cannot determine which system bandwidth should be used as the transmission bandwidth
Moreover, if the transmission bandwidths used by the base station and the UE are inconsistent, the UE cannot correctly demodulate the downlink data, and the generated reference signal sequence is wrong, etc.

Method used

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  • Method and device for transmitting bandwidth information
  • Method and device for transmitting bandwidth information
  • Method and device for transmitting bandwidth information

Examples

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Embodiment Construction

[0053] In the embodiment of the present invention, the base station determines the transmission bandwidth for the downlink data or reference signals that need to be transmitted to the UE in multiple coordinated multi-point cells, and sends the determined transmission bandwidth to the UE, so that the UE can obtain an exact target in the CoMP system. The transmission bandwidth of downlink data or reference signals is consistent with that of the base station to achieve channel measurement, interference suppression, data reception and other operations.

[0054] see image 3 , the flow of the method for implementing bandwidth information transmission on the base station side in this embodiment is as follows:

[0055] Step 301: the base station determines a transmission bandwidth for downlink data or reference signals that require the UE to know bandwidth information in multiple coordinated multi-point cells.

[0056] Generally, the base station uses the system bandwidth of the cel...

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Abstract

Disclosed are a method and a device for transmitting bandwidth information, which are used to implement the transmission of bandwidth information in a CoMP system. The method comprises: a base station determining a transmission bandwidth based on downlink data or a reference signal for which a UE is required to learn bandwidth information in a plurality of coordinated multipoint cells; the base station sending to the UE the indication information of the determined transmission bandwidth corresponding to the corresponding downlink data or reference signal; and the base station determining, according to the transmission bandwidth determined based on the reference signal, a physical resource to be occupied by the reference signal and a sequence of the reference signal, and transmitting the sequence of the reference signal on the physical resource, or the base station determining, according to the transmission bandwidth determined based on the downlink data, a physical resource to be occupied by the downlink data, sending the indication information of the physical resource to the UE, and then transmitting the downlink data on the physical resource.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and a device for transmitting bandwidth information. Background technique [0002] In order to improve system throughput or signal transmission quality, a CoMP (Coordinated Multipoint Transmission / Reception, Coordinated Multipoint Transmission) technology is proposed in the industry. A system applying this technology is called a CoMP system. The CoMP technology refers to the cooperation between multiple transmission points separated geographically. Generally, the multiple transmission points are base stations of different cells, or multiple RRHs (Remote Radio Heads, mobile radio units) controlled by the same cell base station. Through cooperative transmission among multiple transmission points, interference between different transmission points can be effectively reduced, and throughput of users, especially cell edge users, can be improved. [0003] Downlink multi-point coor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/20
CPCH04W28/20H04B7/024H04W72/0453
Inventor 陈文洪高秋彬彭莹张然然倪浩
Owner DATANG MOBILE COMM EQUIP CO LTD
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