Sending method selection and switching device

Abstract

The invention discloses a sending mode selecting and switching device used for the multimedia broadcasting multicasting services. The device comprises a threshold setting unit, a sending mode selecting unit and a sending mode switching unit. The threshold setting unit is used for configuring the count cycle of a timer, the UE access probability factor, the M threshold of the number of the UEs and the P threshold of the number of the UEs beforehand. The sending mode selecting unit is used for making statistics of the number of the UEs according to the count response of the UE and the UE context and selecting the mode in which the multimedia broadcasting multicasting services are sent according to the calculated number of the UEs, the M threshold and the P threshold. The sending mode switching unit is used for real-timely making statistics of the number of the UEs according to the count response of the UE and the UE context and determining whether to switch the mode in which the multimedia broadcasting multicasting services are sent according to the real-timely calculated number of the UEs, the M threshold and the P threshold in the process of the implementation of the multimedia broadcasting multicasting services.

Description

technical field [0001] The present invention relates to the communication field, in particular to a transmission mode selection and switching device. Background technique [0002] Multimedia Broadcast Multicast Service (MBMS) can be divided into broadcast and multicast modes, and can also be divided into point-to-point (Point to Point, referred to as P-T-P) transmission and point-to-multipoint (Point to Multipoint, referred to as P-T-M) transmission . The P-T-P transmission mode of MBMS in the Universal Terrestrial Radio Access Network (hereinafter referred to as UTRAN) adopts the same protocol structure and process as the traditional point-to-point packet switching (Packet Switched, referred to as PS) business: Dedicated Control Channel (DCCH for short), Dedicated Traffic Channel for business (DTCH for short), mapped to Dedicated Channel (DCH for short) or High Speed ​​Downlink Shared Channel (HS for short) -DSCH), applicable to a user equipment (User Equipment, UE for sh...

AI Technical Summary

Problems solved by technology

[0003] In the multicast mode, the use of P-T-P and P-T-M transmission has its own advantages and disadvantages: the use of P-T-P transmission is simple, but in the case of a large number of UEs, it will waste wireless resources; the use of P-T-M transmission, when the number of users reaches a certain number, It can fully save code resources and power resources, but requires the system to increase the overhead of related logical channels

During the process of MBMS service, some users may be terminated, and some new users may join in the middle, which will cause the number of active users to change, which may lead to frequent switching of MBMS transmission methods, which may seriously affect the quality of service (Quality of Service) , hereinafter referred to as QoS), so a transmission method selection and switching strategy is needed to solve the above problems

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