Power headroom report for a wireless device and a base station

• US 10,182,406 B2
• Filed: 03/03/2016
• Issued: 01/15/2019
• Est. Priority Date: 03/09/2015
• Status: Active Grant

• Current Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Original Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Inventors: Dinan, Esmael Hejazi
• Primary Examiner(s): Jangbahadur, Lakeram
• Application Number:
  US15/059,910
• Publication Number:
  US 20160270007A1
• Time in Patent Office: 1,048 Days
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04W 52/242 taking into account path loss
• CPC Class Codes: H04W 52/34 TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
• CPC Class Codes: H04W 52/365 Power headroom reporting
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

A wireless device receives message(s) comprising configuration parameters of a plurality of cells for communication with a base station. The message(s) comprise a first information element (IE) indicating a new extended power headroom report is configured. The first IE is configured as setup when: a secondary cell is configured with a physical uplink control channel (PUCCH) and a second IE indicates that a power headroom report is configured as setup. The wireless device transmits a media-access-control (MAC) packet comprising one or more power headroom reports.

Claims

1. A method comprising:

receiving, by a wireless device from a base station, at least one radio resource configuration (RRC) message comprising;

configuration parameters of a plurality of cells for communication with the base station;

a first power headroom information element (IE) indicating a new extended power headroom report is configured; and

a second power headroom IE, wherein the first power headroom IE is configured as setup when;

a secondary cell in the plurality of cells is configured with a physical uplink control channel (PUCCH); and

the second power headroom IE indicates that a power headroom report is configured as setup; and

transmitting a media-access-control (MAC) packet comprising;

a first Type 2 power headroom field of a primary cell in the plurality of cells; and

a second Type 2 power headroom field of the secondary cell based on the secondary cell being activated;

wherein;

a calculation of a first Type 2 power headroom level of the first Type 2 power headroom field is based on a calculated power of a PUCCH of the primary cell and a calculated power of a physical uplink shared channel (PUSCH) of the primary cell;

a calculation of a second Type 2 power headroom level of the second Type 2 power headroom field is based on a calculated power of the PUCCH of the secondary cell and a calculated power of a PUSCH of the secondary cell; and

a calculation of a Type 1 power headroom level of a Type 1 power headroom field of the secondary cell is based on a calculated power of the PUSCH of the secondary cell.

2. The method of claim 1, wherein the MAC packet further comprises a subheader comprising a logical channel identifier (LCID).

3. The method of claim 1, wherein the at least one RRC message comprises a prohibit power headroom report timer IE, and a periodic power headroom report timer IE.

4. The method of claim 1, wherein a cell index of a cell in the plurality of cells is higher than a predefined value.

5. The method of claim 1, wherein a cell index of a cell with a configured uplink is higher than a predefined value.

6. 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, from a base station, at least one radio resource configuration (RRC) message comprising;

configuration parameters of a plurality of cells for communication with the base station;

a first power headroom information element (IE) indicating a new extended power headroom report is configured; and

a second power headroom IE, wherein the first power headroom IE is configured as setup when;

a secondary cell in the plurality of cells is configured with a physical uplink control channel (PUCCH); and

the second power headroom IE indicates that a power headroom report is configured as setup; and

transmit a media-access-control (MAC) packet comprising;

a first Type 2 power headroom field of a primary cell; and

a second Type 2 power headroom field of the secondary cell based on the secondary cell being activated;

wherein;

a calculation of a first Type 2 power headroom level of the first Type 2 power headroom field is based on a calculated power of a PUCCH of the primary cell and a calculated power of a physical uplink shared channel (PUSCH) of the primary cell;

a calculation of a second Type 2 power headroom level of the second Type 2 power headroom field is based on a calculated power of the PUCCH of the secondary cell and a calculated power of a PUSCH of the secondary cell; and

a calculation of a Type 1 power headroom level of a Type 1 power headroom field of the secondary cell is based on a calculated power of the PUSCH of the secondary cell.

7. The wireless device of claim 6, wherein the MAC packet further comprises a subheader comprising a logical channel identifier (LCID).

8. The wireless device of claim 6, wherein the at least one RRC message comprises a prohibit power headroom report timer IE, and a periodic power headroom report timer IE.

9. The wireless device of claim 6, wherein a cell index of a cell in the plurality of cells is higher than a predefined value.

10. The wireless device of claim 6, wherein a cell index of a cell with a configured uplink is higher than a predefined value.

11. A method comprising:

transmitting, by a base station to a wireless device, at least one radio resource configuration (RRC) message comprising;

configuration parameters of a plurality of cells for communication with the base station;

a first power headroom information element (IE) indicating a new extended power headroom report is configured; and

a second power headroom IE, wherein the first power headroom IE is configured as setup when;

a secondary cell in the plurality of cells is configured with a physical uplink control channel (PUCCH); and

the second power headroom IE indicates that a power headroom report is configured as setup; and

receiving a media-access-control (MAC) packet comprising;

a first Type 2 power headroom field of a primary cell; and

a second Type 2 power headroom field of the secondary cell based on the secondary cell being activated in the wireless device;

wherein;

a calculation of a first Type 2 power headroom level of the first Type 2 power headroom field is based on a calculated power of a PUCCH of the primary cell and a calculated power of a physical uplink shared channel (PUSCH) of the primary cell;

a calculation of a second Type 2 power headroom level of the second Type 2 power headroom field is based on a calculated power of the PUCCH of the secondary cell and a calculated power of a PUSCH of the secondary cell; and

a calculation of a Type 1 power headroom level of a Type 1 power headroom field of the secondary cell is based on a calculated power of the PUSCH of the secondary cell.

12. The method of claim 11, wherein the MAC packet further comprises a subheader comprising a logical channel identifier (LCID).

13. The method of claim 11, wherein a cell index of a cell in the plurality of cells is higher than a predefined value.

14. The method of claim 11, wherein a cell index of a cell with a configured uplink is higher than a predefined value.

15. A base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to;

transmit, to a wireless device, at least one radio resource configuration (RRC) message comprising;

configuration parameters of a plurality of cells for communication with the base station;

a first power headroom information element (IE) indicating a new extended power headroom report is configured; and

a second power headroom IE, wherein the first power headroom IE is configured as setup when;

a secondary cell in the plurality of cells is configured with a physical uplink control channel (PUCCH); and

the second power headroom IE indicates that a power headroom report is configured as setup; and

receive a media-access-control (MAC) packet comprising;

a first Type 2 power headroom field of a primary cell; and

a second Type 2 power headroom field of the secondary cell based on the secondary cell being activated in the wireless device;

wherein;

a calculation of a first Type 2 power headroom level of the first Type 2 power headroom field is based on a calculated power of a PUCCH of the primary cell and a calculated power of a physical uplink shared channel (PUSCH) of the primary cell;

a calculation of a second Type 2 power headroom level of the second Type 2 power headroom field is based on a calculated power of the PUCCH of the secondary cell and a calculated power of a PUSCH of the secondary cell; and

a calculation of a Type 1 power headroom level of a Type 1 power headroom field of the secondary cell is based on a calculated power of the PUSCH of the secondary cell.

16. The base station of claim 15, wherein the MAC packet further comprises a subheader comprising a logical channel identifier (LCID).

17. The base station of claim 15, wherein a cell index of a cell in the plurality of cells is higher than a predefined value.

18. The base station of claim 15, wherein a cell index of a cell with a configured uplink is higher than a predefined value.

19. A system comprising:

a wireless device; and

a base station,

wherein the wireless device is configured to;

receive, from the base station, at least one radio resource configuration (RRC) message comprising;

configuration parameters of a plurality of cells for communication with the base station;

a first power headroom information element (IE) indicating a new extended power headroom report is configured; and

a second power headroom IE, wherein the first power headroom IE is configured as setup when;

a secondary cell in the plurality of cells is configured with a physical uplink control channel (PUCCH); and

the second power headroom IE indicates that a power headroom report is configured as setup; and

transmit a media-access-control (MAC) packet comprising;

a first Type 2 power headroom field of a primary cell; and

a second Type 2 power headroom field of the secondary cell based on the secondary cell being activated,

wherein the base station is configured to;

transmit, to the wireless device, the at least one RRC message; and

receive the MAC packet, and

wherein;

a calculation of a first Type 2 power headroom level of the first Type 2 power headroom field is based on a calculated power of a PUCCH of the primary cell and a calculated power of a physical uplink shared channel (PUSCH) of the primary cell;

a calculation of a second Type 2 power headroom level of the second Type 2 power headroom field is based on a calculated power of the PUCCH of the secondary cell and a calculated power of a PUSCH of the secondary cell; and

a calculation of a Type 1 power headroom level of a Type 1 power headroom field of the secondary cell is based on a calculated power of the PUSCH of the secondary cell.

20. The system of claim 19, wherein the MAC packet further comprises a subheader comprising a logical channel identifier (LCID).

21. The system of claim 19, wherein a cell index of a cell in the plurality of cells is higher than a predefined value.

22. The system of claim 19, wherein a cell index of a cell with a configured uplink is higher than a predefined value.