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Base station and mobile station

A mobile station, ground-based technology, applied in the field of base stations and mobile stations

Active Publication Date: 2015-06-10
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0042] However, neither the 1st nor the 2nd prior art can reduce the increase in communication delay and the deterioration in processing capability due to the rearrangement of packets received from the movement destination base station

Method used

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  • Base station and mobile station
  • Base station and mobile station
  • Base station and mobile station

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0094] figure 1 It is an explanatory diagram of the first embodiment. The source base station 11a judges the possibility of packet forwarding based on the communication status of the target base station 11b when executing the handover sequence, and notifies the mobile station 14 of forwarding execution information (handover execution information).

[0095] exist figure 1 In this case, at the start of the handover procedure, the packets n-2 to n addressed to the mobile station are stored in the buffer of the source base station 11 a without being transmitted. Packet n-2 is being transmitted, and the maximum number of retransmissions or the specified time has not been reached. Also, the packets n−1 to n are stored in the buffer unit BF. When the handover sequence is executed, the destination base station 11b notifies the destination base station 11a of the communication state information of the destination base station together with the HO response message. When receiving t...

no. 2 Embodiment

[0124] Figure 10 It is an explanatory diagram of the second embodiment. The source base station 11a judges the possibility of packet forwarding according to the communication service type when executing the handover sequence, and notifies the mobile station 14 of forwarding execution information (handover execution information).

[0125]It is assumed that the mobile source base station 11a performs grouping of non-real-time services (NRT services) represented by FTP (File Transfer Protocol) and Web communication, and real-time services (RT services) represented by VoIP and streaming (streaming). grouping, such as Figure 10 As shown, each sequence number is appended and stored in the respective buffers BF11 and BF12 to be scheduled. Also, it is assumed that the packets m−2 to m constituting the NRT traffic and the packets n−2 to n constituting the RT traffic are packets that are being transferred or stored in a buffer and have not been transferred to the mobile station 14 . ...

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Abstract

The invention provides a base station and a mobile station. Groups with additional serial numbers representative of a sequence are transmitted from the base station to the mobile station, and are rearranged according to the sequence of the serial numbers in the mobile station. Under the condition that groups which are not transmitted to the mobile station in the groups which are received from an upper station by a mobile source base station are forwarded to a mobile destination base station, and are transmitted to the mobile station by the mobile destination base station, data representing the execution of group handover during the execution of sequence switching is transmitted to the mobile station, and under the condition of the groups are deleted, and are not forwarded to the mobile destination base station, the data representing the execution of the group handover during the execution of the sequence switching is transmitted to the mobile station. According to the mobile station, the received groups are rearranged or the rearrangement of the received groups is eliminated according to whether the group handover is executed or not.

Description

[0001] This application is based on Article 42 of the Implementing Rules of the Patent Law. It is a divisional application of the invention patent application "base station, mobile station, communication system and its rearrangement method" with the filing date of March 22, 2007 and the application number of 200780052045.1. technical field [0002] The present invention relates to a base station and a mobile station, and more particularly to a base station and a mobile station that transmit packets with sequence numbers attached thereto from the base station to the mobile station, and rearrange the packets in the order of the sequence numbers in the mobile station. Background technique [0003] For mobile communication systems such as mobile phones, the third-generation system based on the CDMA method is currently in service, and the next-generation mobile communication system (LTE: Long Term Evolution, Long Term Evolution) that can realize higher-speed communication is being ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/02
Inventor 太田好明
Owner FUJITSU LTD