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Transmission method and device of control information

A technology of control information and transmission method, applied in the field of communication, can solve the problem of large interference in the transmission of control information between cells, and achieve the effects of improving performance, reducing interference and improving quality

Active Publication Date: 2013-07-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problem of relatively large interference in the transmission of control information between cells in related technologies, no effective solution has been proposed so far

Method used

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  • Transmission method and device of control information
  • Transmission method and device of control information
  • Transmission method and device of control information

Examples

Experimental program
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Embodiment 1

[0060] This embodiment is described by taking a Pico eNB in ​​a low-power base station as an example. When a Pico eNB is deployed in or near the coverage area of ​​a macro base station, and a Macro cell and a Pico cell have the same carrier frequency, the PUE served by the Pico cell (which may be called a Victim cell) may be affected by the same frequency Macro Interference of a downlink transmission signal of a cell (may be called an Aggressor cell). In order to reduce the interference of PUE receiving downlink control signals, the macro base station and Pico eNB need to stagger the transmission of control information on the same frequency carrier as much as possible. Image 6 It is a flowchart of a transmission method of Pico eNB control information according to an embodiment of the present invention, such as Image 6 As shown, the method includes the following steps (step S602-step S610):

[0061] In step S602, the Pico eNB can know the current interference situation of t...

Embodiment 2

[0075] This embodiment describes the process in which the HeNB exchanges information with the macro base station through the S1 interface of the MME to complete the transmission of control information. Figure 8Shown is the flow chart of the transmission method of the control information of the HeNB, as shown in Figure 8 As shown, the method includes the following steps (step S802-step S810):

[0076] In step S802, the HeNB can learn the current interference situation of the HUE according to the measurement report result of the cell corresponding to the HeNB (hereinafter referred to as the HUE).

[0077] Step S804, when the HeNB learns that some HUEs are subject to medium-intensity downlink interference (it may also be that the interference received by some HUEs reaches a certain level or threshold), the HeNB may request the macro base station to measure and count for a period of time (it may be a specified period of time ) The symbol occupancy rate of sending PDCCH in each ...

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Abstract

The invention discloses a transmission method and a device of control information, wherein the method comprises the following steps. Firstly, when a low-power base station ensures that an interference degree of user equipment (UE) served by the low-power base station exceeds an interference threshold, physical downlink control channel (PDCCH) information of each macrocell under a macro base station is obtained. Secondly, the low-power base station adjusts a scheduling policy according to the PDCCH information. Thirdly, the low-power base station transmits control information based on the adjusted scheduling policy. By means of the transmission method, when the interference degree of the UE served by the low-power base station exceeds the interference threshold, the PDCCH information of each macrocell under a macro base station is obtained, the scheduling policy is adjusted according to the PDCCH information, the transmission of the control information is carried out based on the adjusted scheduling policy, the interference of the control information among base stations is reduced or avoided, the problem of the large interference of the transmission of the control information among communities in the relative technology is solved, the quality of a wireless link is improved, and a property of the whole network is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a control information transmission method and device. Background technique [0002] With the development of mobile communication and information technology, users' demand for data services is increasing day by day. The current mainstream mobile communication network, whether it is the 2nd / 2.5th generation mobile communication network using Global System For Mobile Communication (GSM for short) / General Packet Radio Service (GPRS for short), The third-generation mobile communication network still adopts the Universal Mobile Telecommunications System (UMTS for short), and is a homogeneous network (Homogeneous Network) that is uniformly planned and deployed by operators. Once a homogeneous network is deployed, the network capacity in a certain area is also fixed. [0003] In order to meet the rapidly growing demand for data services, operators need to deploy more network sites. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCY02D30/70
Inventor 王昕陈琳
Owner ZTE CORP
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