Method of reducing radio channel access delay in GPRS system, and packet radio system

• US 6,810,026 B1
• Filed: 04/26/2000
• Issued: 10/26/2004
• Est. Priority Date: 09/02/1998
• Status: Expired due to Fees

• Current Assignee: Nokia Networks (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Huttunen, Kari
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): LOGSDON, JOSEPH B
• Application Number:
  US09/559,840
• Time in Patent Office: 1,644 Days
• Field of Search: 370/310, 370/328, 370/329, 370/343, 370/345, 370/431, 370/442, 370/443, 370/465, 370/464
• US Class Current: 370/310
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method according to the invention of reducing radio channel access delay in a packet radio system, and a packet radio system, which comprises a network element 100, 102 132, 140 and at least one subscriber terminal 150, which network element 100, 102, 132, 140 transmits channel allocation messages A1, A2, . . . to the subscriber terminals 150, which channel allocation messages A1, A2, . . . are transmitted by means of paging subchannels G0 . . . G9 . . . , and which subscriber terminals 150 listen to one or several paging subchannels G0 . . . G9 . . . . The invention is characterized in that the channel allocation messages A1, A2, . . . to be transmitted to the subscriber terminals 150 are organized such that the cumulative total delay of all the channel allocation messages A1, A2, . . . is minimized by optimizing the use of the paging subchannels G0 . . . G9 . . . .

Claims

1. A method of reducing radio channel access delay in a packet radio system,

which system comprises a network element (100, 102, 132, 140) and at least one subscriber terminal (150),

which, network element (100, 102, 132, 140) transmits channel allocation messages (A1, A2, . . . ) to the subscriber terminals (150),

which channel allocation messages (A1, A2, . . . ) are transmitted by means of paging subchannels (G0 . . . G9 . . . ),

and which subscriber terminals (150) listen to one or several paging subchannels (G0 . . . G9 . . . ),

characterized by organizing the channel allocation messages (A1, A2, . . . ) to be transmitted to the subscriber terminals (150) such that the cumulative total delay of all the channel allocation messages (A1, A2, . . . ) is minimized by optimizing the use of the paging subchannels (G0 . . . G9 . . . ).

2. A method according to claim 1, characterized in that each subscriber terminal (150) only listens to desired paging subchannels (G0 . . . G9 . . . ).

3. A method according to claim 1, characterized in that the network element (100, 102, 132, 140) transmits channel allocation messages (A1, A2, . . . ) to the subscriber terminals (150) according to discontinuous reception (DRX).

4. A method according to claim 1, characterized in that the method is used for advantageously organizing and timing paging messages in a radio system (GPRS, General Packet Radio Service) employing packet transfer.

5. A packet radio system comprising a network element (100, 102, 132, 140) and at least one subscriber terminal (150),

wherein the network element (100, 102, 132, 140) is arranged to transmit channel allocation messages (A1, A2, . . . ) to the subscriber terminals (150) by means of a number of paging subchannels (G0 . . . G9 . . . )

and which subscriber terminals (150) are arranged to listen to one or several paging subchannels (G0 . . . G9 . . . ),

characterized in that the packet radio system is arranged to organize the channel allocation messages (A1, A2, . . . ) to be transmitted to the subscriber terminals (150) such that the cumulative total delay of all the channel allocation messages (A1, A2, . . . ) is minimized by optimizing the use of the paging subchannels (G0 . . . G9 . . . ).

6. A packet radio system according to claim 5, characterized in that each subscriber terminal (150) is arranged to listen to only desired paging subchannels (G0 . . . G9 . . . ).

7. A packet radio system according to claim 5, characterized in that the network element (100, 102, 132, 140) is arranged to transmit channel allocation messages (A1, A2, . . . ) to the subscriber terminals (150) according to discontinuous reception (DRX).

8. A packet radio system according to claim 5, characterized in that the packet radio system (GPRS, General Packet Radio Service) is arranged to advantageously organize and time paging messages.