Communication terminal device, communication control device, radio communication system, and resource allocation request method

A technology for a wireless communication system and a communication terminal, which is applied in the field of communication terminal devices, can solve the problems of requiring time, unable to effectively utilize UL resources, and effectively utilizing resources with low utilization frequency, and achieves the effect of effectively utilizing resources.

Inactive Publication Date: 2010-02-17
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0034] However, in the first method, it is necessary to secure a special random access channel area for the synchronized mobile station, and it cannot be said that resources are effectively used when the frequency of use of the random access channel is low.
In addition, there is a problem that the procedure for requesting new resources takes time because random access that may collide with othe

Method used

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  • Communication terminal device, communication control device, radio communication system, and resource allocation request method
  • Communication terminal device, communication control device, radio communication system, and resource allocation request method
  • Communication terminal device, communication control device, radio communication system, and resource allocation request method

Examples

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Example

[0116] (First embodiment)

[0117] In the first embodiment, a mobile station in DTX / DRX mode is taken as an example, using Figure 7 Give details. In this embodiment, a method of stopping the transmission of the pilot signal and implementing a resource request (UL RR) will be described. Figure 7 It is a sequence diagram showing an example of the change of the pilot signal accompanying the UL resource request in the first embodiment. Figure 7 The left side of shows the sequence diagram of the mobile station (UE), and the right side shows the sequence diagram of the base station (NB). in Figure 7 Among them, the long blocks for data transmission are represented by dots, the short blocks of the UL CQI measurement pilot are represented by blacked out, and the short blocks of the data demodulation pilot are represented by diagonal lines, which are used in the following embodiments The same in the same figure. Below, use Image 6 , Figure 7 The operation of UL RR is explained.

[0...

Example

[0133] (Second embodiment)

[0134] Next, as the second embodiment, a mobile station in DTX / DRX mode is taken as an example, using Picture 9 Give details. In this embodiment, a method of implementing a resource request (UL RR) by stopping the transmission of a pilot signal and restarting it within a predetermined period will be described. Picture 9 It is a sequence diagram showing an example of the change of the pilot signal accompanying the UL resource request in the second embodiment. Picture 9 The left side of shows the sequence diagram of the mobile station (UE), and the right side shows the sequence diagram of the base station (NB). Below, use Image 6 , Picture 9 The operation of UL RR is explained.

[0135] Such as Picture 9 As shown, suppose the following situation ( Picture 9 Pilot signal transmission): The mobile station 200 in DTX / DRX mode does not always communicate, but in order to maintain synchronization, at a certain time and frequency position, within a perio...

Example

[0151] (Third Embodiment)

[0152] Next, as the third embodiment, a mobile station in DTX / DRX mode is taken as an example, using Picture 11 Give details. In this embodiment, a method in which the transmission of the pilot signal is stopped and the resource request (ULRR) is performed when the transmission frequency band of the pilot signal is changed along with time for transmission will be described. Picture 11 A sequence diagram showing an example of the change of the pilot signal accompanying the UL resource request in the third embodiment. Picture 11 The left side of shows the sequence diagram of the mobile station (UE), and the right side shows the sequence diagram of the base station (NB). Below, use Image 6 , Picture 11 The operation of ULRR is explained.

[0153] Such as Picture 11 As shown, suppose the following situation ( Picture 11 Pilot signal transmission): The mobile station 200 in DTX / DRX mode does not always communicate, but in order to maintain synchronizat...

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Abstract

A communication terminal device can send a resource allocation request to a communication control device without allocating any dedicated resource allocation for the resource request. The communication terminal device is applied to a radio communication system in which the communication control device allocates resource used when performing radio transmission from the communication terminal device(200) to the communication control device (100). The communication terminal device includes: a judging unit (210) which judges whether to send a resource request to the communication control device (100); and a signal control unit (211) which transmits a signal used for maintaining time/frequency synchronization with the communication control device (100) to the communication control device (100)by a first transmission procedure for maintaining the synchronization. If the judging unit (210) has judged to make a resource request, the signal control unit (211) transmits the signal to the communication control device (100) by a second transmission procedure indicating the resource request.

Description

technical field [0001] The present invention relates to a communication terminal device, a communication control device, a wireless communication system, and a resource allocation request method applied to a wireless communication system. The communication control device in the wireless communication system allocates resources from the communication terminal device to the Resources used when the communication control device performs wireless transmission. Background technique [0002] In 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project), RAT (Radio Access Technology, Wireless Access Technology), W-CDMA (Wideband-Code Division Multiple Access, Broadband Code Division Multiple Access) was standardized, and services were started sequentially (Non-Patent Document 1). Furthermore, the evolution of the third generation RAT (Evolved Universal Terrestrial Radio Access, hereinafter referred to as "EUTRA") and the evolution of the third generation RAT acce...

Claims

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Application Information

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IPC IPC(8): H04W72/12H04W76/02H04B1/707H04J11/00H04J13/00
CPCH04L5/0007H04L5/0091H04W56/0005H04W72/0413H04W72/1284H04L12/40013H04J13/0059H04L5/0048H04L1/0026H04L27/2613H04W72/21
Inventor 菅原靖夫山田升平中岛大一郎加藤恭之上村克成王和丰今村公彦
Owner SHARP KK
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