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Mobile communication system, base station and mobile station

A mobile station and base station technology, applied in wireless communication, multiplexing communication, code division multiplexing system, etc., can solve the problems of increased receiving and processing load of mobile stations, increased power consumption of mobile stations, etc.

Inactive Publication Date: 2005-06-08
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the mobile station is set to constantly monitor a plurality of control channels, there is a problem that the power consumption of the mobile station increases and the reception processing load of the mobile station also increases.

Method used

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  • Mobile communication system, base station and mobile station
  • Mobile communication system, base station and mobile station
  • Mobile communication system, base station and mobile station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0049] figure 1 It is a configuration diagram showing the mobile communication system according to Embodiment 1 of the present invention. In this figure, 1 is a base station. When the station uses the public channel HS-DSCH to send data to the mobile station 2, it uses the pre-designated specific control channel HS-SCCH to send the control information required to receive the data to the mobile station 2; 2 is a mobile station that receives control information from a pre-designated control channel HS-SCCH, and receives data from a common channel HS-DSCH referring to the control information. In the first embodiment, in order to distinguish a plurality of mobile stations 2, the mobile stations 2 are described as terminals A, B, . . . , J as necessary below.

[0050] figure 2 It is a composition diagram showing the internal composition of the base station 1. In this figure, 11 is a scheduler. When the scheduler receives transmission data from the network side, it outputs the tr...

Embodiment approach 2

[0064] The above Embodiment 1 shows that when the base station 1 transmits data to the mobile station 2 using the common channel HS-DSCH, it uses the pre-designated specific control channel HS-SCCH to send the control information required to receive the data to the mobile station 2, but Base station 1 can send control information intermittently, such as Figure 6 shown.

[0065] Figure 6 In the example of , the control information sent to terminal A is sent at intervals of 1, so terminal A monitors the specific control channel HS-SCCH at intervals of 1, so as to obtain the control information sent to itself from the specific control channel HS-SCCH; The receiving process of the control information is stopped outside the period of the terminal itself.

[0066] Therefore, the power consumption and reception processing load of the mobile station 2 can be further reduced. However, data throughput is somewhat reduced.

[0067] In situations where data throughput degradation ne...

Embodiment approach 3

[0070] The above-mentioned second embodiment shows that the control information is transmitted intermittently, but the base station 1 may change the control information transmission cycle, and the mobile station 2 may also change the control information reception cycle at the same time.

[0071] Specifically, as Figure 7 As shown, if the base station 1 and the mobile station 2 extend the period, the power consumption and reception processing load of the mobile station 2 can be further reduced.

[0072] Assuming that only the control channel HS-SCCH of channel number #1 is the initial monitoring channel, sometimes the number of mobile stations 2 is insufficient, and the transmission cycle of the control information becomes longer. At this time, the scheduler 11 of the base station 1 starts after receiving data from the network , the waiting time until getting the chance to actually send the data increases.

[0073] In this case, if Figure 8 As shown, the mobile stations 2 a...

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Abstract

When a base station transmits data to a mobile station by utilizing a shared channel (HS-DSCH), control information necessary for receiving the data is transmitted to the mobile station by utilizing a predetermined control channel (HS-SCCH) while the mobile station receives control information from the predetermined control channel (HS-SCCH), and receives the data from the shared channel (HS-DSCH) by referencing the control information.

Description

technical field [0001] The present invention relates to a mobile communication system, a base station and a mobile station for implementing wireless communication by using multiple control channels and common channels. Background technique [0002] When the mobile communication system adopts the W-CDMA system, multiple mobile stations share a common channel (a channel for carrying data sent by the base station to the mobile station), and prepare multiple control channels for transmitting control information sent by the base station. [0003] In order to obtain the data addressed to itself from the common channel, the mobile station needs to receive the control information addressed to itself from the control channel and refer to the control information, but it does not know which one of the prepared multiple control channels carries the control information addressed to itself. information, so the mobile station needs to monitor multiple control channels frequently. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J13/00H04W16/02H04W52/02H04W72/04
CPCH04W72/23
Inventor 若林秀治
Owner MITSUBISHI ELECTRIC CORP