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Wireless communication system, mobile station, base station and control method for wireless communication system

A technology of wireless communication system and mobile station, applied in the field of wireless communication system, can solve the problem that the mobile station cannot transfer the power saving mode, etc., and achieve the effect of reducing power consumption

Active Publication Date: 2017-06-23
FUJITSU CONNECTED TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the case of using the existing DRX, since the OnDuration needs to be set longer, the mobile station cannot shift to the power saving mode

Method used

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  • Wireless communication system, mobile station, base station and control method for wireless communication system
  • Wireless communication system, mobile station, base station and control method for wireless communication system
  • Wireless communication system, mobile station, base station and control method for wireless communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] figure 1 It is a block diagram of the mobile station of the first embodiment. also, figure 2 It is a block diagram of the base station of the first embodiment. In this embodiment, it is assumed that the mobile station 1 and the base station 2 communicate using DS (Dynamic Scheduling: Dynamic Scheduling).

[0052] Such as figure 1 As shown, the mobile station 1 of this embodiment has a transceiver unit 11 , a control unit 12 and an uplink transmission unit 13 . Furthermore, the control unit 12 has a control plane unit 110 and a data plane unit 120 . Furthermore, the control plane unit 110 has a PDCCH (Physical Downlink Data Channel: Physical Downlink Data Channel) processing unit 111 , a blind decoding control unit 112 , and a timer control unit 113 . Furthermore, the data plane unit 120 has a PDSCH (Physical Downlink Shared Channel: Physical Downlink Shared Channel) processing unit 121 and a HARQ (Hybrid Automatic Repeat Request: Hybrid Automatic Repeat Request) m...

Deformed example 1-1）

[0124] In Embodiment 1, when the decoding target is limited to a predetermined DCI format, DCI formats #0, #1A, and #1C are set as decoding targets. However, which DCI format is to be decoded is not limited thereto, and at least a control signal and broadcast information that serve as an opportunity to return all possible DCI formats to be decoded can be acquired.

[0125] Therefore, for example, only DCI formats #1A and #1C may be used as DCI formats to be decoded. In this case, as in the first embodiment, Msg0 is transmitted in DCI format #1A, whereby the return command can be acquired. In addition, broadcast information can be acquired in DCI format #1C. In this case, unlike the first embodiment, recovery of blind decoding is not performed even if a PDCCH for uplink data transmission is received. When not monitoring #0 which is the DCI format, it is preferable that the base station 2 grasps that no uplink data transmitted by the mobile station 1 has occurred. Therefore, ...

Deformed example 1-2）

[0129] The signal generation unit 214 generates a signal by specifying zero allocation of the PDSCH region in the PDCCH after receiving the notification of BSI=0 from the blind decoding control unit 212 . Here, zero allocation means that no allocation is performed on the PDSCH region. In this case, the PDSCH is not attached to the PDCCH. Then, the signal generation unit 214 transmits the PDCCH to which zeros are assigned to the PDSCH region to the mobile station 1 via the transmission and reception unit 24 .

[0130] The blind decoding control unit 112 receives the PDCCH to which the PDSCH is allocated as zero. Usually, PDSCH allocation is limited, and by specifying zero allocation, the blind decoding control unit 112 receives a PDCCH with PDSCH zero allocation, and the base station 2 regards BSI=0 accordingly.

[0131] Thus, by specifying zero allocation of PDSCH, the base station 2 can notify the mobile station 1 of BSI=0.

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Abstract

A wireless communication system with a mobile station (1) and a base station. The base station has a blind decoding control unit that transmits a signal including a control signal that triggers a change in decoding processing to the mobile station (1) based on the measurement result of the data amount of the mobile station (1). The mobile station (1) has a blind decoding control unit (112) that selects a format of a signal to be decoded by taking a control signal received from a base station as an opportunity, and performs an analysis of the signal received from the base station. The signal in the selected format is decoded, and the control signal sent to this device is detected.

Description

technical field [0001] The present invention relates to a wireless communication system, a mobile station, a base station and a control method of the wireless communication system. Background technique [0002] In recent years, cellular mobile communication has developed from UMTS (Universal Mobile Telecommunications System: Universal Mobile Telecommunications System) to LTE (Long Term Evolution: Long Term Evolution). In LTE, as a wireless access technology, a method based on OFDM (Orthogonal Frequency Division Multiplexing: Orthogonal Frequency Division Multiplexing) is specified, and a downlink peak transmission rate of 100Mb / s or higher and an uplink peak transmission rate of 50Mb are possible. / s and above high-speed wireless packet communication. In addition, 3GPP (3rd Generation Partnership Project), which is an international standardization organization, has started research on LTE-A (LTE-Advanced), which is an LTE-based mobile communication system, in order to reali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/02H04W28/06H04W72/54
CPCH04L5/0053H04L1/0038H04W52/0212Y02D30/70H04W72/542
Inventor 太田好明河崎义博田岛喜晴
Owner FUJITSU CONNECTED TECH LTD