# US 9,439,208 B2 · Scheduling requests for wireless communication devices running background applications

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- Number: US 9,439,208 B2
- Document ID: US9439208B2
- Status: Granted
- Kind: B2
- Application number: 13/568,508
- Filed: 2012-08-07
- Published: 2013-05-09
- Granted: 2016-09-06
- Earliest claimed: 2011-11-04
- Assignees: Intel Corporation
- Applicants: Ali Koc; Maruti Gupta; Rath Vannithamby
- Inventors: Ali Koc; Maruti Gupta; Rath Vannithamby
- Web page: https://patentgrep.com/patent/US9439208B2

## CPC

- H04W 72/20: Control channels or signalling for resource management
- G06F 9/485: {Task life-cycle, e.g. stopping, restarting, resuming execution (G06F9/4881 takes precedence)}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0076: {Allocation utility-based}
- H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information}
- H04W 4/12: Messaging; Mailboxes; Announcements
- H04W 88/02: Terminal devices
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

In embodiments, a user equipment (UE) may transmit, to an evolved Node B (eNB), a background indicator that the UE is in a background mode running one or more background applications and no active applications. The eNB may receive background indicators from a plurality of UEs, and may bundle the background-mode UEs into one scheduling request (SR) allocation block. The individual UEs may be assigned different resource elements within the block on which to transmit an SR indicator (e.g., if the UE has data to send to the eNB). The eNB may lengthen the period between SR allocations for the background-mode UEs compared with active-mode UEs. In some embodiments, the UE may exclusively use the assigned SR allocation instead of a random access channel to notify the eNB that the UE has data to send.

## Claims

### Claim 1

An apparatus comprising:
communications circuitry configured to communicate with a plurality of user equipments (UEs) over a wireless communication network; and
scheduling circuitry coupled with the communications circuitry and configured to:
receive, from a first set of UEs of the plurality of UEs, an indicator that the first set of UEs are in a background mode in which individual UEs of the first set of UEs run one or more background applications and no active applications, wherein the one or more background applications do not interact with respective users of the individual UEs of the first set of UEs while the individual UEs are in the background mode; and
assign a scheduling request (SR) allocation to the individual UEs of the first set of UEs based on the indicator that the first set of UEs are in the background mode, the SR allocations of the individual UEs including resource elements in a common resource block of a channel, wherein the common resource block is designated for SR allocations of UEs that are in the background mode.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the scheduling circuitry is further configured to notify the individual UEs of their respective SR allocations.

### Claim 3 (depends on 2)

The apparatus of claim 2, wherein the scheduling circuitry is configured to notify the individual UEs of their respective SR allocations via a radio resource control (RRC) control message.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein a periodicity of the assigned SR allocations for the UEs of the first set is longer than a periodicity for active mode UEs communicating with the communications circuitry over the wireless communication network, wherein the active mode UEs are engaged in active interaction with respective users of the active mode UEs.

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein the scheduling circuitry is further configured to instruct the individual UEs to use the assigned SR allocation instead of a random access channel to indicate that the individual UEs have data to send to the apparatus.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the first set includes up to eighteen UEs.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein the channel is a physical uplink control channel (PUCCH).

### Claim 8 (depends on 1)

The apparatus of claim 1, wherein the indicators are received via medium access control (MAC) messages.

### Claim 9 (depends on 1)

The apparatus of claim 1, wherein the first set of UEs are in a radio resource control (RRC) connected state.

### Claim 10 (depends on 1)

The apparatus of claim 1, wherein the scheduling circuitry is further configured to receive another indicator from one or more UEs to indicate that the one or more UEs are no longer in the background mode.

### Claim 11

An apparatus to be employed by a user equipment (UE), the apparatus comprising:
communications circuitry configured to communicate with an evolved Node B (eNB) over a wireless communication network; and
applications circuitry coupled with the communications circuitry and configured to:
transmit, to the eNB, an indicator that the UE is in a background mode in which the applications circuitry runs one or more background applications and no active applications, wherein the one or more background applications are run without active user interaction; and
receive a message from the eNB to update a scheduling request (SR) allocation assigned to the UE, wherein a resource element of the assigned SR allocation for the apparatus is included in a resource block of a channel designated for SR allocations of UEs in the background mode.

### Claim 12 (depends on 11)

The apparatus of claim 11, wherein the applications circuitry is further configured to transmit an SR indicator to the eNB in the resource element of the assigned SR allocation to indicate that the UE has data to send to the eNB for one or more of the background applications.

### Claim 13 (depends on 11)

The apparatus of claim 11, wherein the assigned SR allocation includes an associated periodicity that is longer than SR-allocation periodicities of UEs of the wireless communication network that are in an active mode.

### Claim 14 (depends on 11)

The apparatus of claim 11, wherein the applications circuitry is configured to exclusively use the assigned SR allocation for notifying the eNB that the UE has data to send to the eNB.

### Claim 15 (depends on 11)

The apparatus of claim 11, wherein the indicator is transmitted via a medium access control (MAC) message.

### Claim 16 (depends on 11)

The apparatus of claim 11, wherein the applications circuitry is further configured to transmit another indicator to the eNB to indicate that the UE is no longer in the background mode.

### Claim 17

A method comprising:
receiving, by an evolved Node B (eNB) from a plurality of user equipments (UEs), an indicator that the plurality of UEs are in a background mode, wherein the plurality of UEs are not engaged in active interaction with respective users of the plurality of UEs during the background mode;
designating one or more resource blocks of a physical uplink control channel (PUCCH) for scheduling requests (SRs) from UEs that are in the background mode; and
assigning an SR allocation in the one or more designated resource blocks to individual UEs of the plurality of UEs based on the receiving the indicator.

### Claim 18 (depends on 17)

The method of claim 17, wherein the SR allocation identifies a resource element of the one or more designated resource blocks and a periodicity for individual UEs to use for sending SR indicators to the eNB.

### Claim 19 (depends on 18)

The method of claim 18, wherein the periodicity is longer than a periodicity for active mode UEs communicating with the eNB.

### Claim 20 (depends on 17)

The method of claim 17, further comprising transmitting a radio resource control (RRC) message to the plurality of UEs to notify the individual UEs of their assigned SR allocations.

### Claim 21 (depends on 17)

The method of claim 17, wherein the indicator is received via medium access control (MAC) signaling.

### Claim 22 (depends on 17)

The method of claim 17, wherein the UEs in the background mode are running one or more background applications and no active applications.

### Claim 23

One or more non-transitory computer-readable media having instructions, stored thereon, that, when executed, cause a user equipment (UE) to:
transmit, to an evolved Node B (eNB) over a wireless communication network, an indicator that the UE is in a background mode in which the UE runs one or more background applications and no active applications, wherein the one or more background applications do not interact with a user of the UE while the UE is in the background mode; and
receive a message from the eNB updating a scheduling request (SR) allocation assigned to the UE based on the indicator, wherein a resource element of the assigned SR allocation for the UE is included in a resource block of a physical uplink control channel (PUCCH) designated for SR allocations of UEs in the background mode;
wherein the UE is configured to use the assigned SR allocation instead of a random access channel to indicate to the eNB that the UE has data to send to the eNB.

### Claim 24 (depends on 23)

The one or more computer-readable media of claim 23, wherein the instructions, when executed, further cause the UE to transmit an SR indicator to the eNB in the resource element of the assigned SR allocation if the apparatus has data to send to the eNB for one or more of the background applications.

### Claim 25 (depends on 23)

The one or more computer-readable media of claim 23, wherein the assigned SR allocation includes an associated periodicity that is longer than SR-allocation periodicities of UEs of the wireless communication network that are in an active mode.

### Claim 26 (depends on 23)

The one or more computer-readable media of claim 23, wherein the indicator is transmitted via a medium access control (MAC) message.