# US 10,375,655 B2 · Signal transmission power adjustment in a wireless device

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- Number: US 10,375,655 B2
- Document ID: US10375655B2
- Status: Granted
- Kind: B2
- Application number: 15/201,560
- Filed: 2016-07-04
- Published: 2016-10-27
- Granted: 2019-08-06
- Earliest claimed: 2012-04-16
- Assignees: Comcast Cable Communications, LLC
- Applicants: Comcast Cable Communications, LLC
- Inventors: Esmael Hejazi Dinan
- Web page: https://patentgrep.com/patent/US10375655B2

## CPC

- H04W 52/346: {distributing total power among users or channels}
- H04B 7/2618: {using hybrid code-time division multiple access [CDMA-TDMA]}
- H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L 5/14: Two-way operation using the same type of signal, i.e. duplex
- H04L 27/18: Phase-modulated carrier systems, i.e. using phase-shift keying (H04L27/32 takes precedence)
- H04L 69/22: Parsing or analysis of headers
- H04W 52/325: {Power control of control or pilot channels}
- H04W 52/34: TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
- H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range}
- H04W 52/54: Signalisation aspects of the TPC commands, e.g. frame structure
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W 76/15: Setup of multiple wireless link connections
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 76/38: triggered by timers
- H04L 2101/622: Layer-2 addresses, e.g. medium access control [MAC] addresses
- H04W 72/0473: {the resource being transmission power}
- H04W 74/0833: Random access procedures, e.g. with 4-step access
- H04W 88/02: Terminal devices
- 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

A wireless device determines a first transmission power for a first signal and a second transmission power for a second signal. When a calculated power value is more than an allowable transmission power a power control mechanism is employed. The wireless device reduces signal transmission power of a signal during an overlap period if the overlapping in time is less than a first duration. The wireless device reduces signal transmission power of a signal during at least a non-overlap period if the overlapping in time is more than a second duration.

## Claims

### Claim 1

A method comprising:
receiving, by a wireless device, at least one control message comprising configuration parameters of a plurality of cells, wherein the plurality of cells comprises a first cell group and a second cell group;
determining, for a first signal in a first subframe of the first cell group, a first transmission power;
determining, for a second signal in a second subframe of the second cell group, a second transmission power, wherein the first signal overlaps in time with the second signal; and
based on a calculated power value exceeding an allowable transmission power:
if the first signal overlaps in time with the second signal for less than a first duration, reducing, during an overlap period, signal transmission power of one or more of the first signal or the second signal; and
if the first signal overlaps in time with the second signal for more than a second duration, reducing signal transmission power of one or more of:
the first signal during a first non-overlap period, or
the second signal during a second non-overlap period.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
transmitting the first signal via a physical uplink control channel (PUCCH); and
transmitting the second signal via a physical uplink shared channel (PUSCH).

### Claim 3 (depends on 1)

The method of claim 1, further comprising:
transmitting the first signal via a physical uplink shared channel (PUSCH); and
transmitting the second signal via the PUSCH.

### Claim 4 (depends on 1)

The method of claim 1, wherein the first signal is a random access preamble.

### Claim 5 (depends on 1)

The method of claim 1, wherein the first duration is equal to the second duration.

### Claim 6 (depends on 1)

The method of claim 1, wherein the allowable transmission power is an allowable transmission power of the wireless device.

### Claim 7 (depends on 1)

The method of claim 1, wherein the first signal overlaps in time with the second signal during a portion of a first symbol of one or more of the first signal or the second signal.

### Claim 8 (depends on 1)

The method of claim 1, wherein the calculated power value is a total transmission power of the wireless device.

### Claim 9 (depends on 1)

The method of claim 1, wherein the second signal is a random access preamble.

### Claim 10

A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive at least one control message comprising configuration parameters of a plurality of cells, wherein the plurality of cells comprises a first cell group and a second cell group;
determine, for a first signal in a first subframe of the first cell group, a first transmission power;
determine, for a second signal in a second subframe of the second cell group, a second transmission power, wherein the first signal overlaps in time with the second signal; and
based on a calculated power value exceeding an allowable transmission power:
if the first signal overlaps in time with the second signal for less than a first duration, reduce, during an overlap period, signal transmission power of one or more of the first signal or the second signal; and
if the first signal overlaps in time with the second signal for more than a second duration, reduce signal transmission power of one or more of:
the first signal during a first non-overlap period, or
the second signal during a second non-overlap period.

### Claim 11 (depends on 10)

The wireless device of claim 10, wherein the instructions, when executed by the one or more processors, cause the wireless device to:
transmit the first signal via a physical uplink control channel (PUCCH); and
transmit the second signal via a physical uplink shared channel (PUSCH).

### Claim 12 (depends on 10)

The wireless device of claim 10, wherein the instructions, when executed by the one or more processors, cause the wireless device to:
transmit the first signal via a physical uplink shared channel (PUSCH); and
transmit the second signal via the PUSCH.

### Claim 13 (depends on 10)

The wireless device of claim 10, wherein the first signal is a random access preamble.

### Claim 14 (depends on 10)

The wireless device of claim 10, wherein the second signal is a random access preamble.

### Claim 15 (depends on 10)

The wireless device of claim 10, wherein the allowable transmission power is an allowable transmission power of the wireless device.

### Claim 16 (depends on 10)

The wireless device of claim 10, wherein the first signal overlaps in time with the second signal during a portion of a first symbol of one or more of the first signal or the second signal.

### Claim 17 (depends on 10)

The wireless device of claim 10, wherein the first duration is equal to the second duration.

### Claim 18 (depends on 10)

The wireless device of claim 10, wherein the calculated power value is a total transmission power of the wireless device.

### Claim 19

A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive at least one control message comprising configuration parameters of a plurality of cells, wherein the plurality of cells comprises a first cell group and a second cell group;
determine, for a first signal starting in a first subframe of a cell of the first cell group, a first transmission power;
determine, for a second signal starting in a second subframe of the second cell group, a second transmission power, wherein the second signal overlaps in time with the first signal; and
based on a calculated power value exceeding an allowable transmission power:
if the first subframe and the second subframe overlap in time by less than a first duration, reduce, during an overlap period, signal transmission power of one or more of the first signal or the second signal; and
if the first subframe and the second subframe overlap in time by more than a second duration, reduce signal transmission power of one or more of:
the first signal during a first non-overlap period, or
the second signal during a second non-overlap period.

### Claim 20 (depends on 19)

The wireless device of claim 19, wherein the instructions, when executed by the one or more processors, cause the wireless device to:
transmit the first signal via a physical uplink control channel (PUCCH); and
transmit the second signal via a physical uplink shared channel (PUSCH).

### Claim 21 (depends on 19)

The wireless device of claim 19, wherein the instructions, when executed by the one or more processors, cause the wireless device to:
transmit the first signal via a physical uplink shared channel (PUSCH); and
transmit the second signal via the PUSCH.

### Claim 22 (depends on 19)

The wireless device of claim 19, wherein the first signal is a random access preamble.

### Claim 23 (depends on 19)

The wireless device of claim 19, wherein the allowable transmission power is an allowable transmission power of the wireless device.

### Claim 24 (depends on 19)

The wireless device of claim 19, wherein the calculated power value is a total transmission power of the wireless device.

### Claim 25 (depends on 19)

The wireless device of claim 19, wherein the second signal is a random access preamble.

### Claim 26 (depends on 19)

The wireless device of claim 19, wherein the first duration is equal to the second duration.

### Claim 27 (depends on 19)

The wireless device of claim 19, wherein the first signal overlaps in time with the second signal during a portion of a first symbol of one or more of the first signal or the second signal.

### Claim 28

A method comprising:
receiving, by a wireless device, at least one control message comprising configuration parameters of a plurality of cells, wherein the plurality of cells comprises a first cell group and a second cell group;
determining, for a first signal starting in a first subframe of a cell of the first cell group, a first transmission power;
determining, for a second signal starting in a second subframe of the second cell group, a second transmission power, wherein the second signal overlaps in time with the first signal; and
based on a calculated power value exceeding an allowable transmission power:
if the first subframe and the second subframe overlap in time by less than a first duration, reducing, during an overlap period, signal transmission power of one or more of the first signal or the second signal; and
if the first subframe and the second subframe overlap in time by more than a second duration, reducing signal transmission power of one or more of:
the first signal during a first non-overlap period, or
the second signal during a second non-overlap period.

### Claim 29 (depends on 28)

The method of claim 28, further comprising:
transmitting the first signal via a physical uplink control channel (PUCCH); and
transmitting the second signal via a physical uplink shared channel (PUSCH).

### Claim 30 (depends on 28)

The method of claim 28, further comprising:
transmitting the first signal via a physical uplink shared channel (PUSCH); and
transmitting the second signal via the PUSCH.

### Claim 31 (depends on 28)

The method of claim 28, wherein the first signal is a random access preamble.

### Claim 32 (depends on 28)

The method of claim 28, wherein the second signal is a random access preamble.

### Claim 33 (depends on 28)

The method of claim 28, wherein the allowable transmission power is an allowable transmission power of the wireless device.

### Claim 34 (depends on 28)

The method of claim 28, wherein the calculated power value is a total transmission power of the wireless device.

### Claim 35 (depends on 28)

The method of claim 28, wherein the first duration is equal to the second duration.

### Claim 36 (depends on 28)

The method of claim 28, wherein the first signal overlaps in time with the second signal during a portion of a first symbol of one or more of the first signal or the second signal.

### Claim 37

A system comprising:
a base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors of the base station, cause the base station to:
transmit at least one control message comprising configuration parameters of a plurality of cells, wherein the plurality of cells comprises a first cell group and a second cell group; and
a wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to:
receive the at least one control message;
determine, for a first signal in a first subframe of the first cell group, a first transmission power;
determine, for a second signal in a second subframe of the second cell group, a second transmission power, wherein the first signal overlaps in time with the second signal; and
based on a calculated power value exceeding an allowable transmission power:
if the first signal overlaps in time with the second signal for less than a first duration, reduce, during an overlap period, signal transmission power of one or more of the first signal or the second signal; and
if the first signal overlaps in time with the second signal for more than a second duration, reduce signal transmission power of one or more of:
the first signal during a first non-overlap period, or
the second signal during a second non-overlap period.

### Claim 38 (depends on 37)

The system of claim 37, wherein the instructions stored in the memory of the wireless device, when executed by the one or more processors of the wireless device, cause the wireless device to:
transmit the first signal via a physical uplink control channel (PUCCH); and
transmit the second signal via a physical uplink shared channel (PUSCH).

### Claim 39 (depends on 37)

The system of claim 37, wherein the instructions stored in the memory of the wireless device, when executed by the one or more processors of the wireless device, cause the wireless device to:
transmit the first signal via a physical uplink shared channel (PUSCH); and
transmit the second signal via the PUSCH.

### Claim 40 (depends on 37)

The system of claim 37, wherein the first signal is a random access preamble.

### Claim 41 (depends on 37)

The system of claim 37, wherein the second signal is a random access preamble.

### Claim 42 (depends on 37)

The system of claim 37, wherein the allowable transmission power is an allowable transmission power of the wireless device.

### Claim 43 (depends on 37)

The system of claim 37, wherein the first signal overlaps in time with the second signal during a portion of a first symbol of one or more of the first signal or the second signal.

### Claim 44 (depends on 37)

The system of claim 37, wherein the first duration is equal to the second duration.

### Claim 45 (depends on 37)

The system of claim 37, wherein the calculated power value is a total transmission power of the wireless device.

### Claim 46

A system comprising:
a base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors of the base station, cause the base station to:
transmit at least one control message comprising configuration parameters of a plurality of cells, wherein the plurality of cells comprises a first cell group and a second cell group; and
a wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to:
receive the at least one control message;
determine, for a first signal starting in a first subframe of a cell of the first cell group, a first transmission power;
determine, for a second signal starting in a second subframe of the second cell group, a second transmission power, wherein the second signal overlaps in time with the first signal; and
based on a calculated power value exceeding an allowable transmission power:
if the first subframe and the second subframe overlap in time by less than a first duration, reduce, during an overlap period, signal transmission power of one or more of the first signal or the second signal; and
if the first subframe and the second subframe overlap in time by more than a second duration, reduce signal transmission power of one or more of:
the first signal during a first non-overlap period, or
the second signal during a second non-overlap period.

### Claim 47 (depends on 46)

The system of claim 46, wherein the instructions stored in the memory of the wireless device, when executed by the one or more processors of the wireless device, cause the wireless device to:
transmit the first signal via a physical uplink control channel (PUCCH); and
transmit the second signal via a physical uplink shared channel (PUSCH).

### Claim 48 (depends on 46)

The system of claim 46, wherein the instructions stored in the memory of the wireless device, when executed by the one or more processors of the wireless device, cause the wireless device to:
transmit the first signal via a physical uplink shared channel (PUSCH); and
transmit the second signal via the PUSCH.

### Claim 49 (depends on 46)

The system of claim 46, wherein the first signal is a random access preamble.

### Claim 50 (depends on 46)

The system of claim 46, wherein the second signal is a random access preamble.

### Claim 51 (depends on 46)

The system of claim 46, wherein the allowable transmission power is an allowable transmission power of the wireless device.

### Claim 52 (depends on 46)

The system of claim 46, wherein the calculated power value is a total transmission power of the wireless device.

### Claim 53 (depends on 46)

The system of claim 46, wherein the first duration is equal to the second duration.

### Claim 54 (depends on 46)

The system of claim 46, wherein the first signal overlaps in time with the second signal during a portion of a first symbol of one or more of the first signal or the second signal.

### Claim 55

A method comprising:
transmitting, by a base station, at least one control message comprising configuration parameters of a plurality of cells, wherein the plurality of cells comprises a first cell group and a second cell group;
receiving, by a wireless device, the at least one control message;
determining, for a first signal in a first subframe of the first cell group, a first transmission power;
determining, for a second signal in a second subframe of the second cell group, a second transmission power, wherein the first signal overlaps in time with the second signal; and
based on a calculated power value exceeding an allowable transmission power:
if the first signal overlaps in time with the second signal for less than a first duration, reducing, during an overlap period, signal transmission power of one or more of the first signal or the second signal; and
if the first signal overlaps in time with the second signal for more than a second duration, reducing signal transmission power of one or more of:
the first signal during a first non-overlap period, or
the second signal during a second non-overlap period.

### Claim 56 (depends on 55)

The method of claim 55, further comprising:
transmitting the first signal via a physical uplink control channel (PUCCH); and
transmitting the second signal via a physical uplink shared channel (PUSCH).

### Claim 57 (depends on 55)

The method of claim 55, further comprising:
transmitting the first signal via a physical uplink shared channel (PUSCH); and
transmitting the second signal via the PUSCH.

### Claim 58 (depends on 55)

The method of claim 55, wherein the first signal is a random access preamble.

### Claim 59 (depends on 55)

The method of claim 55, wherein the second signal is a random access preamble.

### Claim 60 (depends on 55)

The method of claim 55, wherein the allowable transmission power is an allowable transmission power of the wireless device.

### Claim 61 (depends on 55)

The method of claim 55, wherein the first signal overlaps in time with the second signal during a portion of a first symbol of one or more of the first signal or the second signal.

### Claim 62 (depends on 55)

The method of claim 55, wherein the first duration is equal to the second duration.

### Claim 63 (depends on 55)

The method of claim 55, wherein the calculated power value is a total transmission power of the wireless device.

### Claim 64

A method comprising
transmitting, by a base station, at least one control message comprising configuration parameters of a plurality of cells, wherein the plurality of cells comprises a first cell group and a second cell group;
receiving, by a wireless device, the at least one control message;
determining, for a first signal starting in a first subframe of a cell of the first cell group, a first transmission power;
determining, for a second signal starting in a second subframe of the second cell group, a second transmission power, wherein the second signal overlaps in time with the first signal; and
based on a calculated power value exceeding an allowable transmission power:
if the first subframe and the second subframe overlap in time by less than a first duration, reducing, during an overlap period, signal transmission power of one or more of the first signal or the second signal; and
if the first subframe and the second subframe overlap in time by more than a second duration, reducing signal transmission power of one or more of:
the first signal during a first non-overlap period, or
the second signal during a second non-overlap period.

### Claim 65 (depends on 64)

The method of claim 64, further comprising:
transmitting the first signal via a physical uplink control channel (PUCCH); and
transmitting the second signal via a physical uplink shared channel (PUSCH).

### Claim 66 (depends on 64)

The method of claim 64, further comprising:
transmitting the first signal via a physical uplink shared channel (PUSCH); and
transmitting the second signal via the PUSCH.

### Claim 67 (depends on 64)

The method of claim 64, wherein the first signal is a random access preamble.

### Claim 68 (depends on 64)

The method of claim 64, wherein the second signal is a random access preamble.

### Claim 69 (depends on 64)

The method of claim 64, wherein the allowable transmission power is an allowable transmission power of the wireless device.

### Claim 70 (depends on 64)

The method of claim 64, wherein the calculated power value is a total transmission power of the wireless device.

### Claim 71 (depends on 64)

The method of claim 64, wherein the first duration is equal to the second duration.

### Claim 72 (depends on 64)

The method of claim 64, wherein the first signal overlaps in time with the second signal during a portion of a first symbol of one or more of the first signal or the second signal.