Cross subframe interference detection method, positioning method and base station thereof

A cross-subframe and interference detection technology, applied in electrical components, wireless communication, etc., can solve problems such as the inability to realize cross-subframe interference detection, increase the difficulty of network planning and deployment, and achieve reduced difficulty, accurate cross-subframe interference, The effect of accurate detection

Active Publication Date: 2012-09-26
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, this technology requires the base station to know the physical layer configuration information of the neighboring cell base station in advance. If the neighbor cell relationship changes or the configuration of the neighboring cell base station is changed, it will affect the previously known configuration information, making it impossible to achieve accurate cross-subframe interference. detection, and increase the difficulty of network planning and deployment

Method used

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  • Cross subframe interference detection method, positioning method and base station thereof
  • Cross subframe interference detection method, positioning method and base station thereof
  • Cross subframe interference detection method, positioning method and base station thereof

Examples

Experimental program
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Embodiment 1

[0042] Before taking the TD-LET system as an example to describe the cross-subframe interference detection method provided by the present invention, in order to facilitate the understanding of the solution, the relevant protocols of the TD-LTE system are briefly introduced, as follows:

[0043] Firstly, the structure of the transmission time slot of DwPTS in the TD-LET system is introduced, such as Figure 4A As shown, it is a typical structure of the transmission time slot of DwPTS, including the downlink control channel PDCCH, the primary synchronization channel P-SCH and the downlink service shared channel PDSCH, such as Figure 4B As shown, it is another typical structure of the transmission time slot of DwPTS, which only includes PDCCH and P-SCH, but does not include PDSCH.

[0044] Among them, the PDCCH contains downlink / uplink resource call information and occupies the entire frequency band bandwidth;

[0045] The P-SCH only uses the central 1.08MHz bandwidth of the en...

Embodiment 2

[0088] After the cross-subframe interference detection method in Embodiment 1 detects that the base station is interfered by the cross-subframe interference of the interference source base station, the processing flow of locating the interference source base station can also be started, such as Figure 8 shown, including:

[0089] Step S801, the base station synchronizes with the base station of the interference source.

[0090] Step S802, receiving a broadcast message sent by the base station of the interference source.

[0091] Step S803. Obtain the global cell identity (CGI) of the interference source base station from the received broadcast message.

[0092] The specific processing flow of the above interference source base station positioning scheme is as follows: Figure 9 shown, including:

[0093] In step S901, after determining that the base station is interfered by the cross subframe of the interference source base station, the base station starts a processing pro...

Embodiment 3

[0103] Based on the same inventive concept, according to the cross-subframe interference detection method and the interference source base station positioning method provided in the above-mentioned embodiments of the present invention, another embodiment of the present invention also provides a base station, the schematic diagram of which is as follows Figure 10 shown, including:

[0104] An obtaining unit 1001, configured to obtain a data sequence carried in a signal received on an interfered symbol;

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Abstract

The invention discloses a cross subframe interference detection method, a positioning method and a base station thereof. The method comprises the following steps that: a base station acquires a data sequence carried in a signal received on an interfered symbol; correlation detection is performed on the acquired data sequence and the data sequence which can be carried and is determined in advance in DwPTS; the cross subframe interference which affects the base station itself is determined according to a detection result. By using a scheme provided in the embodiments of the invention, the base station realizes the detection of the cross subframe interference without knowing physical layer configuration information of the adjacent area base station.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a cross subframe interference detection method, a positioning method and a base station. Background technique [0002] The third-generation mobile communication system 3GPP currently supports the Time Division Duplex (TDD, Time DivisionDuplex) method, that is, the uplink and downlink time slots are transmitted on the same TDD carrier in a time-division manner, and its frame structure is as follows figure 1 As shown, the duration of a frame is T f =307200T s =10ms, a frame includes 10 subframes, each subframe is a transmission time interval (TTI, Transmission Time Interval), the duration is 1ms, a subframe includes two time slots, and the duration of a time slot is 15360T s = 0.5ms. [0003] Among them, in subframe 0, the downlink pilot signal DwPTS (Downlink pilot signal) is fixed as downlink, and the uplink pilot signal UpPTS (Uplink pilot signal) is fixed as u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/04
Inventor 邓伟杨光
Owner CHINA MOBILE COMM GRP CO LTD
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