# US 9,521,657 B2 · Method and apparatus for state/mode transitioning

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- Number: US 9,521,657 B2
- Document ID: US9521657B2
- Status: Granted
- Kind: B2
- Application number: 13/751,369
- Filed: 2013-01-28
- Published: 2013-07-25
- Granted: 2016-12-13
- Earliest claimed: 2009-11-23
- Assignees: BlackBerry Limited
- Applicants: BlackBerry Limited
- Inventors: Johanna Lisa Dwyer; Paul Marcus Carpenter
- Web page: https://patentgrep.com/patent/US9521657B2

## CPC

- H04W 72/04: Wireless resource allocation
- H04W 52/0206: {in access points, e.g. base stations}
- H04W 52/0229: {where the received signal is a wanted signal}
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A user equipment implements a method of processing indication messages, such as SCRI (signaling connection release indication) messages. For at least one RRC (radio resource control) state, if the current RRC state of the UE is a result of a previously sent indication, the UE inhibits itself from sending a further indication message.

## Claims

### Claim 1

A method comprising:
maintaining, by a user equipment (UE), a count of signaling connection release indication (SCRI) messages sent by the UE to a network, wherein at least one of the SCRI messages comprises a transition indicator;
entering radio resource control (RRC) Connected mode; and
after entering the RRC Connected mode, resetting the count of SCRI messages.

### Claim 2 (depends on 1)

The method of claim 1, wherein the SCRI messages sent by the UE each has a cause set.

### Claim 3 (depends on 2)

The method of claim 2, wherein the cause is set to UE Requested PS Data session end.

### Claim 4 (depends on 1)

The method of claim 1, wherein the SCRI messages are sent by the UE while in at least one radio resource control (RRC) state.

### Claim 5 (depends on 4)

The method of claim 4, wherein the at least one RRC state comprises a CELL_PCH state or a URA_PCH state.

### Claim 6 (depends on 1)

The method of claim 1, wherein maintaining a count comprises using a counter.

### Claim 7 (depends on 1)

The method of claim 1, wherein said maintaining includes incrementing the count.

### Claim 8

A user equipment (UE), comprising:
a memory; and
at least one hardware processor communicatively coupled with the memory and configured to:
maintain a count of signaling connection release indication (SCRI) messages sent by the UE to a network, wherein at least one of the SCRI messages comprises a transition indicator;
enter radio resource control (RRC) Connected mode; and
after entering the RRC Connected mode, reset the count of SCRI messages.

### Claim 9 (depends on 8)

The UE of claim 8, wherein the SCRI messages sent by the UE each has a cause set.

### Claim 10 (depends on 9)

The UE of claim 9, wherein the cause is set to UE Requested PS Data session end.

### Claim 11 (depends on 8)

The UE of claim 8, wherein the SCRI messages are sent by the UE while in at least one radio resource control (RRC) state.

### Claim 12 (depends on 11)

The UE of claim 11, wherein the at least one RRC state comprises a CELL_PCH state or a URA_PCH state.

### Claim 13 (depends on 8)

The UE of claim 8, wherein maintaining a count comprises using a counter.

### Claim 14 (depends on 8)

The UE of claim 8, wherein said maintaining includes incrementing the count.

### Claim 15

A tangible, non-transitory computer-readable medium containing instructions which, when executed, cause a computing device to perform operations comprising:
maintaining a count of signaling connection release indication (SCRI) messages sent by a UE to a network, wherein at least one of the SCRI messages comprises a transition indicator;
entering radio resource control (RRC) Connected mode; and
after entering the RRC Connected mode, resetting the count of SCRI messages.

### Claim 16 (depends on 15)

The tangible, non-transitory computer-readable medium of claim 15, wherein the SCRI messages sent by the UE each has a cause set.

### Claim 17 (depends on 16)

The tangible, non-transitory computer-readable medium of claim 16, wherein the cause is set to UE Requested PS Data session end.

### Claim 18 (depends on 15)

The tangible, non-transitory computer-readable medium of claim 15, wherein the SCRI messages are sent by the UE while in at least one radio resource control (RRC) state.

### Claim 19 (depends on 18)

The tangible, non-transitory computer-readable medium of claim 18, wherein the at least one RRC state comprises a CELL_PCH state or a URA_PCH state.

### Claim 20 (depends on 15)

The tangible, non-transitory computer-readable medium of claim 15, wherein maintaining a count comprises using a counter.