# US 9,439,134 B2 · System acquisition mechanism for fixed devices in mobile broadband networks

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- Number: US 9,439,134 B2
- Document ID: US9439134B2
- Status: Granted
- Kind: B2
- Application number: 13/995,163
- Filed: 2011-12-01
- Published: 2014-05-15
- Granted: 2016-09-06
- Earliest claimed: 2011-04-01
- Assignees: Intel Corporation
- Applicants: Jing Zhu; Rath Vannithamby; Ali Koc; Maruti Gupta
- Inventors: Jing Zhu; Rath Vannithamby; Ali Koc; Maruti Gupta
- Web page: https://patentgrep.com/patent/US9439134B2

## CPC

- H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC]
- H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H04L 5/003: {Arrangements for allocating sub-channels of the transmission path}
- H04L 5/0037: {Inter-user or inter-terminal allocation}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 25/0204: {of multiple channels}
- H04L 25/0226: {sounding signals per se}
- H04L 25/03343: {Arrangements at the transmitter end}
- H04L 43/50: Testing arrangements
- H04L 45/70: {Routing based on monitoring results}
- H04L 65/65: Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
- H04W 24/00: Supervisory, monitoring or testing arrangements
- H04W 24/02: Arrangements for optimising operational condition
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 48/16: Discovering, processing access restriction or access information
- H04W 48/20: Selecting an access point
- H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame}
- H04W 52/0219: {where the power saving management affects multiple terminals}
- H04W 52/146: {Uplink power control}
- H04W 52/18: TPC being performed according to specific parameters
- H04W 56/001: {Synchronization between nodes}
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals}
- H04L 25/0328: {with interference cancellation circuitry (adaptations for interference cancellation within a sequence estimator H04L25/03305; interference related aspects of direct sequence spread spectrum H04B1/7097; interference related aspects of frequency hopping spread spectrum H04B1/715; see also H04B1/10)}
- H04L 2025/03426: {transmission using multiple-input and multiple-output channels}
- H04L 2025/03802: {Signalling on the reverse channel}
- H04W 48/10: using broadcasted information
- H04W 48/12: using downlink control channel
- H04W 88/02: Terminal devices
- H04W 88/08: Access point devices
- H04W 92/20: between access points
- 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)
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- 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

Briefly, in accordance with one of more embodiments, a fixed device synchronizes with a downlink channel of a network, acquires a master information block including a last system update time; and executes cell selection without acquiring other system information if the last system update time is before the last system access time. Furthermore, the fixed device may listen only for system information block messages that it needs, and ignore other system information blocks. A bitmap may indicate which system information block messages should be listed to for fixed devices, and which may be ignored. In some embodiments, one or more system information blocks may be designated for fixed devices.

## Claims

### Claim 1

An article of manufacture comprising a non-transitory storage medium having instructions stored thereon that, if executed, result in:
synchronizing with a downlink channel of a network;
acquiring system information from the network;
receiving a bitmap from the network, wherein the bitmap indicates which system information block messages that fixed devices should listen to; and
listening for system information block messages indicated in the bitmap;
wherein the bitmap indicates a time of last update for one or more of the system information blocks and wherein the instructions, if executed, further result in:
if one or more of the system information blocks have been updated, receiving the updated system information blocks.

### Claim 2 (depends on 1)

An article of manufacture as claimed in claim 1, wherein one or more the system information block messages indicated in the bitmap are special system information block messages designated for fixed devices.

### Claim 3 (depends on 1)

An article of manufacture as claimed in claim 1, wherein the instructions, if executed, further result in:
ignoring system information blocks that have not been updated if said information system block have been previously received.

### Claim 4 (depends on 3)

An article of manufacture as claimed in claim 3, wherein the bitmap indicates if there has been any change in one or more of the system information blocks and wherein the instructions, if executed, further result in:
if one or more of the system information blocks have been changed, receiving the changed system information blocks.

### Claim 5 (depends on 4)

An article of manufacture as claimed in claim 4, wherein the instructions, if executed, further result in:
ignoring system information blocks that have not been changed if said information system block have been previously received.

### Claim 6

An apparatus of a user equipment (UE) comprising baseband processing circuitry to:
synchronize with a downlink channel of a network;
acquire system information from the network;
receive a bitmap from the network, wherein the bitmap indicates which system information block messages that fixed devices should listen to;
listen for system information block messages indicated in the bitmap, wherein the bitmap indicates a time of last update for one or more of the system information blocks; and
receive updated system information blocks if one or more of the system information blocks have been updated.

### Claim 7 (depends on 6)

The apparatus as claimed in claim 6, wherein one or more the system information block messages indicated in the bitmap are special system information block messages designated for fixed devices.

### Claim 8 (depends on 6)

The apparatus as claimed in claim 6, wherein the baseband processing circuitry is configured to ignore system information blocks that have not been updated if said information system blocks have been previously received.

### Claim 9 (depends on 8)

The apparatus as claimed in claim 8, wherein the bitmap indicates if there has been any change in one or more of the system information blocks, and the baseband processing circuitry is configured to receive changed system information blocks if one or more of the system information blocks has been changed.

### Claim 10 (depends on 9)

The apparatus as claimed in claim 9, wherein the baseband processing circuitry is configured to ignore system information blocks that have not been changed if said information system block have been previously received.

### Claim 11 (depends on 6)

The apparatus as claimed in claim 6, further comprising an applications processor coupled to the baseband processing circuitry, and a touch screen to receive an input to control the applications processor.