Method, apparatus and base station for distributing wireless resource of uplink

A technology of wireless resources and links, applied in wireless communication, network traffic/resource management, space transmit diversity, etc., can solve problems such as space difference

Active Publication Date: 2014-03-26
NTT DOCOMO INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In a MIMO system, on the one hand, the sub-channels on different sub-carriers are time-varying and spatially different, and the inter-cell interference received by the base station has different effects on the signal quality of each user; on the other hand, based on the uploaded data (data queue length), the requirements of users on different time slots are also changing, therefore, how to reduce user data transmission delay (to ensure user fairness) and maximize the total system throughput at the same time is an important issue for system design. a daunting challenge

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  • Method, apparatus and base station for distributing wireless resource of uplink
  • Method, apparatus and base station for distributing wireless resource of uplink
  • Method, apparatus and base station for distributing wireless resource of uplink

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Embodiment Construction

[0051] The present invention will be further described through specific embodiments below in conjunction with the accompanying drawings. First explain the definitions of some symbols in this article:

[0052] K: the total number of users in the multi-user multi-carrier MIMO system, herein, the users are online users (active users) in the system;

[0053] F: the total number of subcarriers in the system;

[0054] N r : the number of receiving antennas of the base station;

[0055] N tk : the number of transmitting antennas of user k

[0056] The radio resource allocation method described in this embodiment includes the following two main objectives:

[0057] 1) To achieve the highest possible system throughput;

[0058] 2) Guarantee user fairness: within a tolerable delay period, the system treats each user fairly to ensure that each user can get a fair opportunity, and the wireless resources allocated to users are easy to manage, thereby ensuring that users service qual...

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Abstract

The invention provides a uplink wireless resource distribution method, apparatus and base station. The method comprises: setting an objective function according to the priority factors of all the users in the system; acquiring the wireless resource corresponding to every user when the objective function obtains maximum while meeting the predetermined constraint conditions, where the predetermined constraint condition is that the emission power of every user is not larger than the predetermined value, and the virtually distributed user quantity on any subcarrier is not larger than the base station receiving antenna quantity; and distributing wireless resource to every user according to the acquired wireless resource corresponding to every user. Distributing wireless resource using the method, apparatus and base station in the invention, can satisfy system total throughput maximization and user fairness excellently at the same time.

Description

technical field [0001] The present invention relates to the technical field of uplink wireless resource allocation in a wireless communication system, in particular to a wireless resource allocation method, device and base station for a multi-user, multi-carrier, multiple-input, multiple-output system. Background technique [0002] Future wireless communication systems are required to provide higher and higher information transmission rates and communication quality. In order to achieve this goal on limited spectrum resources, the Multiple-Input Multiple-Output (MIMO, Multi-Input Multi-Output) technology has become one of the indispensable means used in future wireless communications. [0003] In the MIMO system, the transmitting end controls multiple antennas to transmit signals according to the beamforming vector, and the receiving end uses multiple antennas to receive signals. Studies have shown that compared with traditional single-antenna transmission methods, MIMO tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W28/18H04W72/04H04W88/08H04B7/08
Inventor 张战加山英俊陈建平
Owner NTT DOCOMO INC
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