Base Station Selection and Load-Based Dynamic Time Domain Resource Allocation in Heterogeneous Networks

Abstract

The invention discloses a method for base station selection and load-based dynamic time-domain resource allocation in a heterogeneous network, which includes: receiving terminal according to the reference signals sent by different base stations, respectively counting the cross-layer interference and the absence of cross-layer interference Refer to the receiving quality of the signal, and select the serving base station according to the result; the receiving terminal reads the information of the serving base station, receives the reference training sequence of the serving base station, performs channel estimation according to the received signal, and obtains the channel between the receiving terminal and the serving base station; the receiving terminal According to the estimated channel state information, the information is fed back to its serving base station; the macro base station counts the current load situation and interacts with the adjacent macro base station to determine the allocation of its time domain resources; the macro base station and the micro base station according to the allocation of time domain resources Based on the results, the receiving terminal is scheduled to provide data transmission services for the receiving terminal. The method of the invention can dynamically adjust the time-domain resource allocation scheme of the macro base station according to the load condition of the receiving terminal in the current area, and improves the throughput rate of the whole system.

Description

technical field [0001] The invention relates to a method in the field of wireless communication, in particular to a base station selection and load-based dynamic time domain resource allocation method in a heterogeneous network system. Background technique [0002] In order to solve the access problem of more and more receiving terminals, it is obviously not feasible to increase the communication bandwidth without limit. In a macro cell, the deployment of low-power base stations can alleviate the network load in hotspot areas and improve the communication quality of indoor receiving terminals and cell edge receiving terminals. Therefore, the heterogeneous network based on the microcellular system is one of the key technologies to solve the capacity limitation of the future communication system. [0003] In the discussions on the formulation of the LTE-A system standard, 3GPP introduced two newest research topics: "Research on Scenarios and Technical Specifications of LTE Mi...

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Problems solved by technology

However, some data of the method used in this document are difficult to obtain in reality and it does not indicate how the macro cell should schedule the receiving terminal when the adjacent cells adopt different ABS frame ratios

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