Method and Arrangement For Avoiding Colisions Between Access Attempts In a Mobile Communication Network

• US 20080233976A1
• Filed: 08/23/2005
• Published: 09/25/2008
• Est. Priority Date: 08/23/2005
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Bergqvist, Jens, Ostrup, Peter, Lund, Lars-Goran
• Application Number:
  US12/063,887
• Publication Number:
  US 20080233976A1
• Time in Patent Office: Days
• US Class Current: 455/458
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access
• CPC Class Codes: H04W 74/0875 with assigned priorities based access

Abstract

A method and an arrangement for avoiding collision between first access attempts of at least two mobile stations being paged in a cell of a mobile communication network, wherein a paging message in a downlink channel comprises a pre-determined access order for the mobile stations being paged, whereby a first access attempt in a pre-determined TDMA frame in an uplink channel according to said access order is sent from the mobile stations being paged.

Claims

1. A method for avoiding collision between first access attempts of at least two mobile stations being paged in a cell of a mobile communication network, said method comprising the steps of:

each of said at least two mobile stations performs the steps of;

receiving a paging message comprising a pre-determined access order from a downlink channel; and

,

sending a first access attempt in an uplink channel according to said access order.

2. The method according to claim 1, wherein said first access attempt is sent in a pre-determined TDMA frame in said uplink channel.

3. The method according to claim 1, wherein a list of paged mobile stations is provided in said paging message and said access order corresponds to the order of the paged mobile stations in said list.

4. The method according to claim 3, wherein said access order is slot N+X, wherein N is a pre-determined number and X is the position of the mobile station in said list.

5. The method according to claim 1, wherein said access order is provided in a broadcast parameter sent in said downlink channel.

6. A system for avoiding collision between first access attempts of at least two mobile stations being paged in a cell of a mobile communication network, wherein each of said at least two mobile stations comprises:

means for receiving a paging message comprising a pre-determined access order from a downlink channel; and

,

means for sending a first access attempt in an uplink channel according to said access order.

7. The system according to claim 6, wherein said first access attempt is arranged to be sent in a pre-determined TDMA frame in said uplink channel.

8. The system according to claim 6, wherein said paging message comprises a list of paged mobile stations, wherein said access order is arranged to correspond to the order of the paged mobile stations in said list.

9. The system according to claim 8, wherein said access order is slot N+X, wherein N is a pre-determined number and X is the position of the mobile station in said list.

10. The system according to claim 6, wherein said downlink channel comprises a broadcast parameter providing said access order.

11. The system according to claim 6, wherein said downlink channel is a Common Control Channel (CCCH) and said uplink channel is a Random Access Channel (RACH).

12. The system according to claim 6, wherein said downlink channel is a Packet Common Control Channel (PCCCH) and said uplink channel is a Packet Random Access Channel (PRACH).

13. The system according to claim 6, wherein said mobile communication network is a General Packet Radio Service (GPRS) network.