Quality of service-oriented downlink radio resource allocation method of user-centered network

A wireless resource, service-oriented technology, applied in the field of downlink wireless resource allocation, can solve the problem that users' differentiated needs and individuality are not given enough attention.

Active Publication Date: 2017-01-11
XI AN JIAOTONG UNIV
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Problems solved by technology

At present, the wireless resource management strategy is mainly designed around the "network-centri

Method used

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  • Quality of service-oriented downlink radio resource allocation method of user-centered network
  • Quality of service-oriented downlink radio resource allocation method of user-centered network
  • Quality of service-oriented downlink radio resource allocation method of user-centered network

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Embodiment Construction

[0073] The present invention is described in further detail below in conjunction with accompanying drawing:

[0074] refer to figure 1 According to the present invention, the downlink wireless resource allocation method for user-centric network oriented to service quality includes the following steps:

[0075] 1) There are K users and M base stations in the system, and the K users are divided into rate-sensitive users and delay-sensitive users, wherein rate-sensitive users only use rate-sensitive services, and delay-sensitive users Only delay-sensitive services are used, the base station is configured with M directional antennas, and the user equipment is configured with an omnidirectional antenna. The total bandwidth allocated by each base station is BHz, and the total bandwidth allocated by the base station is determined by N orthogonal antennas at the base station. The subcarriers are equally divided, and each subcarrier occupies a bandwidth B s = B / N, within a subcarrier...

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Abstract

The invention discloses a quality of service-oriented downlink radio resource allocation method of a user-centered network, comprising the following steps: (1) calculating an actual signal X<m><k,t>(i) sent by a base station m to a user k on a subcarrier i and a total signal T<k,t>(i) received by the user k; (2) calculating the channel quality C<k,t>(i) under a ZFBF coding strategy, and establishing a utility function of the radio resource allocation problem; (3) performing collaborative user selection according to the utility function of the radio resource allocation problem, and determining collaborative users communicating on each subcarrier; (4) calculating the MU-MIMO-ZFBF pre-coding coefficient according to the result of collaborative user selection and the determined collaborative users communicating on each subcarrier; and (5) calculating the optimal transmitting power of delay-sensitive users and the optimal transmitting power of rate-sensitive users, thus completing quality of service-oriented downlink radio resource allocation of the user-centered network. Through the method, quality of service-oriented resource allocation can be carried out based on user requirements.

Description

technical field [0001] The invention belongs to the technical field of wireless resource management in an OFDMA access network, and relates to a quality-of-service-oriented downlink wireless resource allocation method for a user-centered network. Background technique [0002] With the rapid increase of user communication equipment and the rapid development of wireless access technology, the wireless connection in the current access network has become unprecedentedly complex, and at the same time, wireless resources have become unprecedentedly scarce. Under such a background, the traditional radio resource management problem ushers in new challenges. At present, the wireless resource management strategy is mainly designed around the "network-centric" idea, and the differentiated needs and personalities of users have not received enough attention. [0003] First of all, it is necessary to mention the 'Multiple Input Multiple Output' (MIMO) transmission technology. By carrying...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/08
CPCH04W72/0453H04W72/0473H04W72/543Y02D30/70
Inventor 曲桦谭真杰赵季红
Owner XI AN JIAOTONG UNIV
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