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Mobile Station

A mobile station, message technology, applied in the field of mobile stations, can solve problems such as inability to send

Inactive Publication Date: 2016-03-09
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Here, there is a problem that, when the mobile station UE receives different "RRC connection reconfiguration (RRC connection reconfiguration)" from different radio base stations eNB at almost the same time, there is a problem depending on the content of the "RRC connection reconfiguration" received later. There is a possibility that the "RRC connection reconfiguration complete" for the "RRC connection reconfiguration" received earlier may not be sent

Method used

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Embodiment Construction

[0025] (Mobile communication system according to the first embodiment of the present invention)

[0026] refer to Figure 1 to Figure 3 A mobile communication system according to a first embodiment of the present invention will be described.

[0027] The mobile communication system of the present embodiment is an LTE-Advanced mobile communication system, such as figure 1 As shown, a radio base station eNB#1 and a radio base station eNB#2 are provided.

[0028] In the mobile communication system according to this embodiment, the mobile station UE can perform "inter-eNB CA" using a cell served by the radio base station eNB#1 and a cell served by the radio base station eNB#2.

[0029] Such as figure 2 As shown, the mobile station UE according to this embodiment includes a receiving unit 11 and an RRC message processing unit 12 .

[0030] The receiving unit 11 receives various messages transmitted from the radio base station eNB#1 and the radio base station eNB#2.

[0031] ...

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Abstract

This invention prevents delays in the transmission of "RRC connection reconfiguration complete" messages when inter-eNB carrier aggregation is being performed. This mobile station (UE) is provided with an RRC-message processing unit (12) designed such that if an "RRC connection reconfiguration #2" message is received from a wireless base station (eNB #2) after an "RRC connection reconfiguration #1" message is received from another wireless base station (eNB #1), the "RRC connection reconfiguration #2" message is processed after the transmission of an "RRC connection reconfiguration complete" message in response to the "RRC connection reconfiguration #1" message is completed.

Description

technical field [0001] The present invention relates to mobile stations. Background technique [0002] In the Release-10 scheme of LTE (Long Term Evolution), CA (Carrier Aggregation) was introduced as a control for realizing broadband communication exceeding 20 MHz while maintaining "backward compatibility". [0003] In CA, a plurality of CCs (Component Carriers) are bundled and communicated, and high throughput can be realized. [0004] However, in the CA ("intra-eNB CA", ie Intra-eNBCA) in the Release-10 mode of LTE, if Figure 4 As shown, there is a constraint that "the CCs to be bundled must be under the same radio base station eNB". [0005] Therefore, when a communication carrier intends to implement the CA, it is necessary to always perform network deployment (Network deployment) so that the CC becomes subordinate to the same radio base station eNB, and there is a problem that flexible network deployment is difficult. [0006] In order to solve this problem, as one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/02H04W16/32H04W72/04
CPCH04W76/19H04W76/22H04W76/15H04L1/1607H04L5/0055
Inventor 内野彻高桥秀明W.A.哈普萨里
Owner NTT DOCOMO INC