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Collaborative scheduling beam forming based user option method

A beamforming and cooperative scheduling technology, applied in electrical components, wireless communication, network planning, etc., can solve problems such as increasing codec complexity, increasing system load, and exchanging and transmitting less data.

Active Publication Date: 2013-10-02
SOUTHEAST UNIV
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Problems solved by technology

Although the performance of CoMP-JPT is better than that of CoMP-CS / CB, each base station needs complete channel state information and all user data, which increases the load of the system and increases the complexity of encoding and decoding.
In the actual system, although CoMP-CS / CB loses performance gain, it provides low-complexity codec, and only needs to exchange and transmit less data

Method used

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  • Collaborative scheduling beam forming based user option method
  • Collaborative scheduling beam forming based user option method
  • Collaborative scheduling beam forming based user option method

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Embodiment Construction

[0034] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. The users involved in the present invention are located in three cells, and a base station is arranged in the middle of each cell.

[0035] like figure 1 As shown, a user selection method based on cooperative scheduling beamforming of the present invention includes the following steps:

[0036] Step 10) Initialization: Set the remaining user sequence U of each cell w =[1 w ,2 w ,...,K w ], selected user set S w = φ, candidate user set C w =φ, where w represents the code of the community, and the codes of the three communities are b, and w is b, or K w is the Kth user in cell w, and φ indicates that the set is empty. K is an integer greater than or equal to 3.

[0037] Step 20) Select the first user in each cell, including step 201)-step 203):

[0038] Step 201) Use the base stations in each cell to measure an...

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Abstract

The invention discloses a collaborative scheduling beam forming based user option method, and users are positioned in three cells, each with a base station at the middle part. The method comprises the following steps: step 10, initialization, setting a sequence of residual users in each cell, as well as a selected user set and a candidate user set ; step 20, selecting the first user in each cell; step 30, building the candidate user set in each cell; step 40, refreshing the candidate user set in each cell; step 50, selecting the 2Pth user, wherein the original value of the p is zero, and p represents the frequency of returning to the step 50 from the step 60; and step 60, if the absolute value of Sw is less than -1, returning to the step 50, and otherwise, terminating. Due to the adoption of the user option method, the performance of the cell edge users is improved; and moreover, the cell edge users are selected for transmission, so as to further improve the performance.

Description

technical field [0001] This patent belongs to the field of wireless communication, and specifically relates to a user selection method based on cooperative scheduling beamforming. Background technique [0002] In a traditional MIMO cellular network, because users at the cell edge are greatly interfered by adjacent base stations, the performance of edge users will be greatly affected. In recent years, the proposed Coordinated Multipoint (CoMP) technology has effectively improved the performance of cell edge users. In a traditional MIMO cellular system, the spatial degree of freedom is determined by the number of base station antennas, but base station cooperation can provide a spatial degree of freedom proportional to the number of base stations, providing better performance. There are two scenarios in CoMP: CoMP-JPT and CoMP-CS / CB. The former allows the base stations to cooperate to transmit user data, so that the downlink interference signal becomes the desired signal. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W72/12
Inventor 衡伟孟超田安龙梁天承昊翔
Owner SOUTHEAST UNIV
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