Charging control method used in D2D (device-to-device) communication

Abstract

The invention discloses a charging control method used in D2D (device-to-device) communication. A base station, at least one pair of first users in a same cell and users in D2D communication with the first users are included. The method includes the following steps (1), periodically sending detection signals to nearby users to detect channel quality by the first users; (2), feeding IDs (identities) back to the first users by the users, wherein quality of the channels between the first users and the users is larger than a threshold X; (3), making the IDs to be a list and sending the list to a PCRF (policy and charging rule function), forwarding the list received by the PCRF to an SPR (subscription profile repository), processing the list and then sending the list to PCRF again; (4) when the first users request the nearby users for D2D communication, sending information to the PCRF; (5), when D2D communication connection is disconnected, sending bearings to the PCRF by the first users, and charging according to PCC charging rules or time by a PCEF (policy and charging enforcement function). By the method, starting time, ending time and data flow of communication establishing are submitted to the PCRF through D2D users to enable the PCRF to generate a charging strategy so as to guarantee operators to be capable of charging normally.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for implementing Device-to-Device (D2D for short) communication for controlling PCRF charging in a long-term evolution system. Background technique [0002] At present, the D2D communication based on the cellular system has received extensive attention in recent years. The D2D communication technology has the following advantages: Since the data does not need to be transferred through the base station, but is directly transmitted between users, the D2D technology reduces the processing time of the base station. Burden; you can choose to multiplex resources with other users to improve resource utilization; the two parties performing D2D communication are usually very close, so the transmission power is saved. However, under the current communication system, the charging process is completed by the following modules: Policy and Charging Rule Function (Policy...

AI Technical Summary

Problems solved by technology

[0003] However, in the D2D communication process, the data does not need to be transmitted through the base station, but is directly transmitted between users. In the traditional cellular communication charging mode, the base station cannot monitor the flow of D2D communication data, and cannot make the PCRF generation calculation Billing for D2D communication based on policy

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