System and method for reducing a forced neighbor cell procedure

• US 20070117566A1
• Filed: 11/21/2005
• Published: 05/24/2007
• Est. Priority Date: 11/21/2005
• Status: Abandoned Application

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Khawand, Jean, Schentrup, Philip, Block, Kelley, Russell, Todd
• Application Number:
  US11/285,585
• Publication Number:
  US 20070117566A1
• Time in Patent Office: Days
• US Class Current: 455/446
• CPC Class Codes: H04W 36/0088 Scheduling hand-off measurements

Abstract

The invention concerns a method (300, 500) and system (112) for reducing a forced neighbor cell procedure. The method can include the steps of—in a mobile unit (112) on a communications channel (400, 600)—monitoring (312, 512) one or more neighbor cell parameters and performing (314, 514) a neighbor cell measurement in a selectively generated opportunity in the communications channel to reduce the possibility that the mobile unit will enter a forced neighbor cell measurement.

Claims

1. A method for reducing a forced neighbor cell procedure, comprising:

in a mobile unit on a communications channel, monitoring one or more neighbor cell parameters; and

performing a neighbor cell measurement in a selectively generated opportunity in the communications channel to reduce the possibility that the mobile unit will enter a forced neighbor cell measurement.

2. The method according to claim 1, wherein the neighbor cell parameter is a signal strength or an indication as to a type of data that can be exchanged.

3. The method according to claim 1, wherein the communications channel includes a reservation request slot having a first subslot and a second subslot and wherein the opportunity is selectively generated by only selecting the first subslot of the reservation request slot for a reservation request and avoiding the second subslot for the reservation request, wherein avoiding the second subslot for the reservation request creates an additional window for performing the neighbor cell measurement.

4. The method according to claim 3, wherein the communications channel is a half-duplex communications channel having transmission and receive slots in which the transmission and receive slots are temporally offset.

5. The method according to claim 3, further comprising counting for a predetermined number of slots and only selecting the first subslot of the reservation request slot for the reservation request and avoiding the second subslot for the reservation request if a transmission request is received during the counting of the predetermined number of slots.

6. The method according to claim 1, wherein the opportunity is selectively generated in the communications channel by modifying a channel allocation slot in the communications channel.

7. The method according to claim 6, wherein the channel allocation slot is a dynamic channel allocation procedure slot and modifying the channel allocation slot comprises setting a counter in the dynamic channel allocation procedure slot.

8. The method according to claim 7, wherein setting the counter comprises setting the counter to a predetermined value to indicate that a slot map for a number of dynamic channel allocation procedure frames will not change, wherein the number corresponds to the predetermined value.

9. The method according to claim 8, wherein performing the neighbor cell measurement comprises performing the neighbor cell measurement during dynamic channel allocation procedure slots in at least one of the dynamic channel allocation procedure frames that will not change.

10. The method according to claim 6, wherein the channel allocation slot in the communications channel is modified by a communications network that is communicating with the mobile unit.

11. A system for reducing a forced neighbor cell procedure, comprising:

a receiver that receives wireless signals over a communications channel; and

a processor coupled to the receiver, wherein the processor is programmed to;

monitor one or more neighbor cell parameters; and

perform a neighbor cell measurement in a selectively generated opportunity in the communications channel to reduce the possibility that the mobile unit will enter a forced neighbor cell measurement.

12. The system according to claim 11, wherein the communications channel includes a reservation request slot having a first subslot and a second subslot and wherein the processor is further programmed to selectively generate the opportunity by only selecting the first subslot of the reservation request for a reservation request and avoiding the second subslot for the reservation request, wherein avoiding the second subslot for the reservation request creates an additional window for the neighbor cell measurement.

13. The system according to claim 12, wherein the processor is further programmed to count for a predetermined number of slots and to only select the first subslot of the reservation request slot for the reservation request and to avoid the second subslot for the reservation request if a transmission request is received during the counting of the predetermined number of slots.

14. The system according to claim 11, wherein the opportunity is selectively generated in the communications channel by modifying a channel allocation slot in the communications channel.

15. The system according to claim 14, wherein the channel allocation slot is a dynamic channel allocation procedure slot and the channel allocation slot is modified by setting a counter in the dynamic channel allocation procedure slot, wherein a communications network in communication with the receiver sets the counter.

16. The system according to claim 15, wherein the communications network sets the counter to a predetermined value to indicate that a slot map for a number of dynamic channel allocation procedure frames will not change, wherein the number corresponds to the predetermined value.

17. The system according to claim 16, wherein the processor is further programmed to perform the neighbor cell measurement during dynamic channel allocation procedure slots in at least one of the dynamic channel allocation procedure frames that will not change.

18. A machine readable storage, having stored thereon a computer program having a plurality of code sections executable by a mobile unit for causing the mobile unit to perform the steps of:

monitoring on a communications channel one or more neighbor cell parameters; and

performing a neighbor cell measurement in a selectively generated opportunity in the communications channel to reduce the possibility that the mobile unit will enter a forced neighbor cell measurement.

19. The machine readable storage according to claim 18, wherein the communications channel includes a reservation request slot having a first subslot and a second subslot and wherein the opportunity is selectively generated by only selecting the first subslot of the reservation request for a reservation request and avoiding the second subslot for the reservation request, wherein avoiding the second subslot for the reservation request creates an additional window for the neighbor cell measurement.

20. The machine readable storage according to claim 18, wherein the opportunity is selectively generated in the communications channel by modifying a channel allocation slot in the communications channel.