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Radio communication apparatus and method of control

A technology for radio stations and radio systems, applied in the field of mobile communication systems and operating radio stations, can solve problems such as adjusting random access parameters, and achieve the effects of avoiding signaling load and reducing access transmission delays.

Inactive Publication Date: 2008-10-29
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this approach is that it makes it difficult for the network to adjust random access parameters in response to changes in uplink cell load

Method used

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  • Radio communication apparatus and method of control

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Embodiment Construction

[0022] refer to figure 1 , exemplifies a radio communication system including a radio communication device 100 and a radio station 200 .

[0023] The radio station 200 comprises a transmitter 80 for intermittently transmitting access parameters via an antenna 85 for use by the radio communication device 100 to transmit access messages. The access parameters may be random access parameters for use by the radio communication device 100 when sending random access messages. One or more access parameters may be sent. The transmitter 80 is adapted to transmit a validity indicator indicating whether a radio communication device 100 wishing to transmit an access message should use its stored value of the most recently transmitted access parameter or should wait to receive the next one. The access parameters sent. The access parameters and validity indicators may be generated by an access controller 95 coupled to the transmitter 80 . Access controller 95 may generate access paramet...

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Abstract

A method of operating a radio communication apparatus (100), comprises receiving an access parameter transmitted intermittently by a radio station (200), storing a value of the latest received access parameter, and transmitting an access signal. It further comprises receiving a validity indicator transmitted by the radio station (200), and if the validity indicator has a first value, employing the stored value of the latest received access parameter to transmit the access signal, and if the validity indicator has a second value, waiting to receive the next random access parameter and employing the value of said next access parameter to transmit the access signal.

Description

technical field [0001] The invention relates to a radio system, a radio communication device, a radio station, a method of operating a radio communication device, and a method of operating a radio station. The invention finds particular but not exclusive application in mobile communication systems such as the Universal Mobile Telecommunications System (UMTS). Background technique [0002] In the current version of UMTS, a delay occurs between initiating a call (either to or from the mobile station) and starting the mobile station's random access transmission, because the mobile station has to wait for the receipt of the random access parameters, which The access parameters are sent periodically but possibly occasionally from the base station on a broadcast channel. [0003] In UMTS, parameters describing how random access transmissions are performed are signaled intermittently on a broadcast channel (BCH). These parameters may eg be updated according to the uplink load in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04W48/12H04W74/08
CPCH04W48/12H04W74/0866H04W88/02H04W88/08
Inventor M·P·J·巴克P·巴克内尔O·J·-M·休斯T·J·茂尔斯利
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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