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Uplink and downlink interference coordination processing method and apparatus

A processing method and processing device technology, applied in the field of communication, capable of solving problems such as interference coordination

Inactive Publication Date: 2017-03-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The present invention provides a method and device for coordinating uplink and downlink interference, so as to at least solve the problem of interference between the network side that supports the full downlink subframe format and the network side that only supports the existing TDD subframe format in the adjacent frequency band and the same frequency band. coordination problem

Method used

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  • Uplink and downlink interference coordination processing method and apparatus
  • Uplink and downlink interference coordination processing method and apparatus
  • Uplink and downlink interference coordination processing method and apparatus

Examples

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Embodiment 1

[0209] image 3 It is a schematic flow chart of downlink-to-uplink interference coordination according to preferred embodiment 1 of the present invention, such as image 3 shown, including:

[0210]Step S301, the user terminal on the network side 1 obtains frequency and symbol synchronization with the base station on the adjacent frequency network side 2 according to PSS (Primary Synchronization Signal, Primary Synchronization Signal) and / or SSS (Secondary Synchronization Signal, Secondary Synchronization Signal).

[0211] The specific process is: the user terminal obtains frequency and symbol synchronization with the base station on the adjacent network side 2 according to the PSS and / or SSS, and learns the PCI (Physical-layer Cell Identity, Physical-layer Cell Identity) of the base station on the network side 2 community ID).

[0212] Step S302 , the user terminal on the network side 1 obtains the TDD subframe format of the network side 2 according to the RSSI power value....

Embodiment 2

[0223] Figure 5 It is a schematic flow chart of downlink-to-uplink interference coordination according to preferred embodiment 2 of the present invention, such as Figure 5 As shown, steps S501 to S506 are included. Compared with the preferred embodiment 1, steps S502 and S506 are different from steps S302 and S306. The difference is that in step S502, the user terminal on the network side 1 obtains the TDD subframe of the same-frequency network side 2 base station according to the decoded network side 2 PBCH type.

[0224] The specific process is: the user terminal on the network side 1 decodes the PBCH of the network side 2, and obtains the TDD uplink and downlink configuration format of the base station carried by the network side information SIB1 (System Information Blocks). Wherein, the transmission period of SIB1 is 80ms, and in order to ensure the correct reception of the cell edge users, the same transmission will be repeated 3 times in one transmission period.

[...

Embodiment 3

[0227] Image 6 is a schematic flow chart of downlink-to-uplink interference coordination according to preferred embodiment 3 of the present invention, as shown in Image 6 As shown, steps S601 to S606 are included. Compared with the preferred embodiment, steps S601-S605 are the same as steps S301-S305, the difference is that in step S606, at the intersection subframe, that is, the network side 1 is a DL subframe, and the network side 2 is a UL subframe; Side 1 lowers the CRS transmit power for downlink transmission, which will reduce the UL transmission interference to network side 2, but for user terminals in network side 1, when the CRS transmit power is reduced, RSRP measurement is not performed, that is, the cell selection process is not performed. In this way, the problem of cell shrinkage caused when the user terminal in the local cell selects the serving cell to access according to the reduced RSRP is avoided.

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Abstract

The present invention provides an uplink and downlink interference coordination processing method and apparatus. The method comprises the steps that subframe formats including an uplink subframe and a downlink subframe transmitted between a first network and a second network are configured, wherein the second network is a neighbor frequency band or a same frequency band of neighbor network of the first network, and the first network supports transmission of full downlink subframes; and the first network determines whether to start a downlink-against-uplink interference prevention mechanism according to the configured uplink subframe and downlink subframe of the second network. Through adoption of the method, a problem of how to coordinate interference by the networks of the neighbor frequency band and the same frequency band that support full downlink subframe and the network supporting only existing TDD subframe is solved, and downlinks of different networks can coordinate the uplink interference.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a method and device for processing uplink and downlink interference coordination. Background technique [0002] Time Division Duplex (TDD for short) network side is divided into uplink (sent from User Equipment (UE) to base station (Evolved Node Base station, eNB)) and downlink (sent from base station to base station) in time domain user terminal) resources, and the allocation of uplink and downlink resources is usually performed in units of time slots or subframes. Generally, the base station uses broadcast network side information (System Information, referred to as SI for short) to notify all user terminals (User Equipment, referred to as UE for short) in the cell about the allocation of uplink and downlink resources in a semi-static manner. [0003] Table 1 shows the uplink and downlink configuration modes of the TDD mode on the network side of the Long Term Evolut...

Claims

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Application Information

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IPC IPC(8): H04J11/00H04W24/02
CPCH04J11/00H04W24/02
Inventor 任敏赵亚军左志松
Owner ZTE CORP
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