# US 2013/0156004 A1 · TECHNIQUES TO PERFORM EVOLVED HIGH RATE PACKET DATA (eHRPD) NETWORK SPECIFIC SCANNING

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- Number: US 2013/0156004 A1
- Document ID: US20130156004A1
- Status: Published application
- Kind: A1
- Application number: 13/326,223
- Filed: 2011-12-14
- Published: 2013-06-20
- Earliest claimed: 2011-12-14
- Assignees: QUALCOMM Incorporated
- Inventors: Arvind Swaminathan; Manasi Dhiren Gandhi; Rajashekar Chilla
- Web page: https://patentgrep.com/patent/US20130156004A1

## CPC

- H04W 36/0072: {of resource information of target access point}
- H04W 36/0085: {Hand-off measurements}
- H04W 36/008357: {Determination of target cell based on access point [AP] properties, e.g. AP service capabilities}
- H04W 48/16: Discovering, processing access restriction or access information
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Evolved High Rate Packet Data (eHRPD) network specific scanning process includes storing first network information indicating whether a channel frequency corresponds to an evolved High Rate Packet Data (eHRPD) network within a first persistent memory. The process also includes storing second network information indicating whether the channel frequency corresponds to a High Rate Packet Data (HRPD) network within a second persistent memory. The process further includes maintaining Internet Protocol (IP) continuity according to the first and second network information stored within the first and second persistent memories.

## Claims

### Claim 1

A method of wireless communication, comprising:
storing first network information indicating whether a channel frequency corresponds to an evolved High Rate Packet Data (eHRPD) network within a first persistent memory;
storing second network information indicating whether the channel frequency corresponds to a High Rate Packet Data (HRPD) network within a second persistent memory; and
maintaining Internet Protocol (IP) continuity according to the first and second network information stored within the first and second persistent memories.

### Claim 2 (depends on 1)

The method of claim 1, further comprising
acquiring a network and performing a session negotiation with the network;
storing eHRPD network information within the first persistent memory when the network is an eHRPD network; and
storing HRPD network information within the second persistent memory when the network is an HRPD network.

### Claim 3 (depends on 2)

The method of claim 2, further comprising:
identifying a network as one of an eHRPD network and an HRPD network according to an information field from a system information block (SIB) that identifies when a cell supports eHRPD communications;
storing eHRPD network information within the first persistent memory when the network is an eHRPD network; and
storing HRPD network information within the second persistent memory when the network is an HRPD network.

### Claim 4 (depends on 1)

The method of claim 1, further comprising:
storing network failure information indicating whether the channel frequency corresponds to a network in which a failure was previously detected; and
identifying each channel frequency corresponding to a network in which the failure was previously detected as one of an eHRPD network and an HRPD network.

### Claim 5 (depends on 1)

The method of claim 1, further comprising scanning for systems that are not yet identified as eHRPD or HRPD.

### Claim 6

An apparatus configured for wireless communication, the apparatus comprising:
a memory including a first persistent memory and a second persistent memory; and
at least one processor coupled to the memory, the at least one processor being configured:
to store first network information indicating whether a channel frequency corresponds to an evolved High Rate Packet Data (eHRPD) network within the first persistent memory;
to store second network information indicating whether the channel frequency corresponds to a High Rate Packet Data (HRPD) network within the second persistent memory; and
to maintain Internet Protocol (IP) continuity according to the first and second network information stored within the first and second persistent memories.

### Claim 7 (depends on 6)

The apparatus of claim 6, in which the processor is further configured:
to acquire a network and performing a session negotiation with the network;
to store eHRPD network information within the first persistent memory when the network is an eHRPD network; and
to store HRPD network information within the second persistent memory when the network is an HRPD network.

### Claim 8 (depends on 7)

The apparatus of claim 7, in which the processor is further configured:
to identify a network as one of an eHRPD network and an HRPD network according to an information field from a system information block (SIB) that identifies when a cell supports eHRPD communications;
to store eHRPD network information within the first persistent memory when the network is an eHRPD network; and
to store HRPD network information within the second persistent memory when the network is an HRPD network.

### Claim 9 (depends on 6)

The apparatus of claim 6, in which the processor is further configured:
to store network failure information indicating whether the channel frequency corresponds to a network in which a failure was previously detected; and
to identify each channel frequency corresponding to a network in which the failure was previously detected as one of an eHRPD network and an HRPD network.

### Claim 10 (depends on 6)

The apparatus of claim 6, in which the processor is further configured to scan for systems that are not yet identified as eHRPD or HRPD.

### Claim 11

A computer program product configured for wireless communication, the computer program product comprising:
a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising:
program code to store first network information indicating whether a channel frequency corresponds to an evolved High Rate Packet Data (eHRPD) network within a first persistent memory;
program code to store second network information indicating whether the channel frequency corresponds to a High Rate Packet Data (HRPD) network within a second persistent memory; and
program code to maintain Internet Protocol (IP) continuity according to the first and second network information stored within the first and second persistent memories.

### Claim 12 (depends on 11)

The computer program product of claim 11, further comprising:
program code to acquire a network and performing a session negotiation with the network;
program code to store eHRPD network information within the first persistent memory when the network is an eHRPD network; and
program code to store HRPD network information within the second persistent memory when the network is an HRPD network.

### Claim 13 (depends on 12)

The computer program product of claim 12, further comprising:
program code to identify a network as one of an eHRPD network and an HRPD network according to an information field from a system information block (SIB) that identifies when a cell supports eHRPD communications;
program code to store eHRPD network information within the first persistent memory when the network is an eHRPD network; and
program code to store HRPD network information within the second persistent memory when the network is an HRPD network.

### Claim 14 (depends on 11)

The computer program product of claim 11, further comprising:
program code to store network failure information indicating whether the channel frequency corresponds to a network in which a failure was previously detected; and
program code to identify each channel frequency corresponding to a network in which the failure was previously detected as one of an eHRPD network and an HRPD network.

### Claim 15 (depends on 11)

The computer program product of claim 11, further comprising program code to scan for systems that are not yet identified as eHRPD or HRPD.

### Claim 16

An apparatus configured for operation within a wireless communication network, the apparatus comprising:
means for storing first network information indicating whether a channel frequency corresponds to an evolved High Rate Packet Data (eHRPD) network within a first persistent memory;
means for storing second network information indicating whether the channel frequency corresponds to a High Rate Packet Data (HRPD) network within a second persistent memory; and
means for maintaining Internet Protocol (IP) continuity according to the first and second network information stored within the first and second persistent memories.

### Claim 17 (depends on 16)

The apparatus of claim 16, further comprising:
means for acquiring a network and performing a session negotiation with the network;
means for storing eHRPD network information within the first persistent memory when the network is an eHRPD network; and
means for storing HRPD network information within the second persistent memory when the network is an HRPD network.

### Claim 18 (depends on 17)

The apparatus of claim 17, further comprising:
means for identifying a network as one of an eHRPD network and an HRPD network according to an information field from a system information block (SIB) that identifies when a cell supports eHRPD communications;
means for storing eHRPD network information within the first persistent memory when the network is an eHRPD network; and
means for storing HRPD network information within the second persistent memory when the network is an HRPD network.

### Claim 19 (depends on 16)

The apparatus of claim 16, further comprising:
means for storing network failure information indicating whether the channel frequency corresponds to a network in which a failure was previously detected; and
means for identifying each channel frequency corresponding to a network in which the failure was previously detected as one of an eHRPD network and an HRPD network.

### Claim 20 (depends on 16)

The apparatus of claim 16, further comprising means for scanning for systems that are not yet identified as eHRPD or HRPD.