Method for multiplexing heterogeneous network system resources

A system resource and heterogeneous network technology, applied in the field of heterogeneous network system resource reuse, can solve problems such as not fully considering user interruption requirements, achieve the effect of improving total throughput, reducing interruption probability, and ensuring user data transmission quality

Inactive Publication Date: 2011-09-14
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0011] Aiming at the defects existing in the prior art, in order to solve the problem that the frequency (frequency band) resource reuse in the prior art does not fully consider the interruption requirement of users, the present invention proposes a method for resource reuse of the heterogeneous network system, based on the The Inter-Cell Interference Coordination (ICIC) scheme plans the frequency domain of the home base station, which not only meets the outage probability of the home base station or macro base station, but also satisfies the system throughput under different ICIC schemes

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  • Method for multiplexing heterogeneous network system resources
  • Method for multiplexing heterogeneous network system resources
  • Method for multiplexing heterogeneous network system resources

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Embodiment 1

[0047] image 3 The illustrated embodiment provides an implementation strategy of a heterogeneous network system resource multiplexing method, in which the macro cell adopts static frequency multiplexing with a multiplexing factor of 3; in this embodiment, it is considered that home base station users and macro base station users The requirements for the outage probability are the same. By considering the interference of different macro base stations to the home base station, the strongest interference source is avoided through frequency reuse, thereby reducing the outage probability of the home base station users.

[0048] Specifically, the method of setting the default interference intensity threshold value according to the outage probability requirement is as follows:

[0049] (1) First, calculate the signal to interference ratio (Signal to Interference Ratio; SIR) of the macro cell user:

[0050] Suppose user U 0 The macro base station to which it belongs is B 0 , the m...

Embodiment 2

[0086] Such as Figure 4 The shown embodiment 2 also provides a home base station setting based on different ICIC schemes under the requirement of outage probability, proposes a new resource multiplexing scheme, and realizes the balance between the macro base station combined with the macro base station user spectrum efficiency requirements and system capacity trade off.

[0087] The method includes: the macro base station calculates a default interference intensity threshold value in combination with system user outage probability requirements, macro base station spectrum efficiency requirements and resource multiplexing scheme.

[0088] If the outage probability requirements of macro base station users and home base station users are the same, the outage probability is also required to be very small, even close to 0; for macro base stations, a static frequency reuse strategy is adopted, that is, the frequency reuse factor between cells is 7; As for the home base station, ac...

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Abstract

The invention relates to the field of wireless communication and provides a method for multiplexing heterogeneous network system resources. The family base station quantity capable of being contained in a macro base station is researched in the heterogeneous network that comprises the macro base station and family base stations in LTE downlink. In the invention, it is assumed that the frequency bands used by the two-layer system users are full frequency bands, when the two-layer system users need to meet the interruption possibility requirement, how to adopt the two-layer frequency domain layout is researched so as to maximize the total throughput of the system. When the community user, especially the family base station user has certain interruption possibility requirement, the interference of the heterogeneous network environment can be avoided effectively, thus leading the macro community to contain more family base stations, thereby improving the throughput of the community; furthermore, the factor of the spectrum efficiency of the macro community can be considered, thus balancing the spectrum efficiency of the macro community and the total throughput of the system.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for multiplexing heterogeneous network system resources. Background technique [0002] In the development of wireless communication, with the increase of the number of users and the increase of user demand, the current architecture can no longer meet the demand. Although reducing the radius of the cell can properly solve the above problems, it also brings the problem of too high complexity of the equipment architecture. In the LTE-A (Long Term Evolution-Advanced) system, an evolved heterogeneous network is introduced, that is, a home base station is deployed under a macro base station, and high data volume transmission is realized by shortening the distance between users and the base station. [0003] A femtocell is an access point or a small base station used in the home range. The femtocell equipment is connected to the macrocell base station through broadband (su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W16/18
Inventor 王莹张平张纬栋马楠石聪王坦刘宝玲
Owner BEIJING UNIV OF POSTS & TELECOMM
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