System and Method for Large Packet Delivery During Semi-Persistently Allocated Session

• US 20080310356A1
• Filed: 01/03/2008
• Published: 12/18/2008
• Est. Priority Date: 06/15/2007
• Status: Abandoned Application

• Current Assignee: Research In Motion Limited (Blackberry Limited)
• Original Assignee: Research In Motion Limited (Blackberry Limited)
• Inventors: Suzuki, Takashi, Womack, James Earl, Wu, Wei, Cai, Zhijun, Young, Gordon
• Application Number:
  US11/969,082
• Publication Number:
  US 20080310356A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/72 using reservation actions during connection setup
• CPC Class Codes: H04L 47/76 using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04W 28/02 Traffic management, e.g. flow control or congestion control
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]

Abstract

Systems and methods of delivering large IP packets during a semi-persistently allocated resource session. An additional resource allocation is dynamically made and signalled to a mobile device to indicate a resource to be used to deliver the large IP packet. The packet is then transmitted using the resource thus allocated.

Claims

1. A method in a wireless network for transmitting to a mobile device, the method comprising:

making a semi-persistent resource allocation for the mobile device for downlink transmission and signaling this to the mobile device;

transmitting packets to the mobile device using the semi-persistent resource allocation;

transmitting signaling to the mobile device that indicates an additional resource allocation; and

transmitting an additional packet using the additional resource allocation.

2. The method of claim 1 wherein:

transmitting signaling to the mobile device that indicates the additional resource allocation comprises using a layer 1 control channel.

3. The method of claim 1 wherein:

transmitting signaling to the mobile device that indicates the additional resource allocation comprises using a MAC layer signaling.

4. The method of claim 3 wherein using a MAC layer signaling comprises transmitting an optional field in one of the packets transmitted using the semi-persistent resource allocation.

19. The method of claim 1 wherein packets transmitted on the semi-persistent resource comprise of VoIP packets.

5. A method in a mobile device comprising:

receiving a semi-persistent resource allocation for downlink packet transmission;

receiving downlink packet transmissions on the semi-persistent resource;

on an ongoing basis, monitoring downlink signaling for a grant of an additional resource allocation; and

upon receipt of such a grant, the mobile device receiving an additional packet on the additional resource allocation.

6. The method of claim 5 wherein on an ongoing basis, monitoring downlink signaling for a grant of an additional resource allocation comprises monitoring a layer 1 control channel.

7. The method of claim 5 wherein on an ongoing basis, monitoring downlink signaling for a grant of an additional resource allocation comprises monitoring MAC layer signaling.

8. The method of claim 7 wherein monitoring MAC layer signaling comprises processing a header of each downlink packet transmitted on the semi-persistent resource to look for the grant.

9. A method in a wireless network for receiving from a mobile device, the method comprising:

making a semi-persistent resource allocation for the mobile device for uplink transmission and signaling this to the mobile device;

receiving packets from the mobile device using the semi-persistent resource allocation;

on an ongoing basis, monitoring for uplink signaling from the mobile device containing a request for an additional UL transmission resource allocation to transmit an additional UL packet;

if a request is received, transmitting signaling to the mobile device that indicates an additional resource allocation; and

receiving the uplink additional packet using the additional resource allocation.

10. The method of claim 9 wherein on an ongoing basis, the network monitors for uplink signaling from the mobile device containing a request for an additional UL transmission resource allocation to transmit an additional UL packet comprises monitoring a contention-based access channel.

11. The method of claim 10 wherein monitoring a contention-based access channel comprises monitoring a random access channel.

12. The method of claim 9 wherein on an ongoing basis, the network monitors for uplink signaling from the mobile device containing a request for an additional UL transmission resource allocation to transmit an additional UL packet comprises monitoring MAC layer signaling.

13. The method of claim 12 wherein monitoring MAC layer signaling comprises looking at a header of each packet transmitted using the semi-persistent uplink allocation.

14. A method in a mobile device comprising:

receiving a semi-persistent resource allocation for uplink packet transmission;

transmitting packets on the semi-persistent resource allocation;

when the mobile device has an additional packet to transmit, the mobile device transmitting a request for a grant of an additional resource allocation using uplink signaling;

the mobile device monitoring downlink signaling for a grant of an additional uplink resource allocation; and

upon receipt of such grant, the mobile device transmitting the additional packet on the additional resource allocation.

15. The method of claim 14 wherein the mobile device transmitting a request for the grant of an additional resource allocation using uplink signaling comprises transmitting the request using a contention-based access channel.

16. The method of claim 15 wherein transmitting the request using a contention-based access channel comprises transmitting using a random access channel.

17. The method of claim 14 wherein the mobile device transmitting a request for the grant of an additional resource allocation using uplink signaling comprises transmitting the request using MAC layer signaling.

18. The method of claim 17 wherein transmitting the request using MAC layer signaling comprises transmitting the request as part of a header of one of the packets transmitted using the semi-persistent resource allocation.