Wireless Device Transmission Power

• US 20150131589A1
• Filed: 01/17/2015
• Published: 05/14/2015
• Est. Priority Date: 04/16/2012
• Status: Active Grant

• Current Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Original Assignee: Ofinno Technologies, LLC
• Inventors: Dinan, Esmael Hejazi
• Granted Patent: US 9,241,326 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 7/2618 using hybrid code-time division multiple access [CDMA-TDMA]
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 2101/622 Layer-2 addresses, e.g. medium access control [MAC] addresses
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• 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 52/346 distributing total power among users or channels
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 52/54 Signalisation aspects of the TPC commands, e.g. frame structure
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/38 triggered by timers
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A wireless device transmits a first packet in subframe n of a first cell of a first cell group and transmits a second packet in subframe n+1 of a second cell of a second cell group overlapping in time with the transmission of the first packet. The wireless device reduces a subframe transmission power of at least one of the first packet and the second packet if a power value is more than an allowable transmission power. A calculation for the power value considers transmission power of the first packet and the second packet according to a pre-configured rule.

Claims

1. A method for use by a wireless device, the method comprising:

a) receiving from a base station at least one radio resource control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups;

b) transmitting a first packet in subframe n of a first cell of a first cell group in said plurality of cell groups;

c) transmitting a second packet in subframe n+1 of a second cell of a second cell group in said plurality of cell groups, said transmitting of said second packet overlapping in time with said transmitting of said first packet; and

d) reducing a subframe transmission power of at least one of said first packet and said second packet if a power value is more than a maximum allowable transmission power, a calculation for said power value considering transmission power of said first packet and said second packet if said overlapping in time exceeds a first duration.

2. The method of claim 1, wherein:

a) said plurality of cells comprise a primary cell and at least one secondary cell;

b) said plurality of cell groups comprise a primary cell group and a secondary cell group;

c) said primary cell group comprises a first subset of said plurality of cells comprising cell primary cell; and

d) said secondary cell group comprises a second subset of said at least one secondary cell.

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

4. The method of claim 1, further comprising determining said first duration such that said total transmission power is less than or equal to said maximum allowable transmission power of said wireless device during said overlapping in time.

5. The method of claim 1, wherein said first duration is more than twenty micro seconds.

6. The method of claim 1, further comprising reducing a transient transmission power of at least one of said first packet and said second packet during said overlapping in time, said overlapping in time being less than said first duration.

7. The method of claim 1, wherein said total transmission power is less than or equal to said maximum allowable transmission power of said wireless device during said overlapping in time.

8. The method of claim 1, wherein said calculation considers transmission power of one of said first packet and said second packet if said overlapping in time is less than a second duration.

9. The method of claim 1, wherein said first packet is transmitted on one of:

a) a physical uplink control channel; and

b) a physical uplink shared channel.

10. The method of claim 1, wherein said second packet is transmitted on one of:

a) a physical uplink control channel; and

b) a physical uplink shared channel.

11. A wireless device comprising:

a) one or more communication interfaces;

b) one or more processors; and

c) memory storing instructions that, when executed, cause said wireless device to;

i) receive from a base station at least one radio resource control message comprising configuration parameters of a plurality of cells grouped into a plurality of cell groups;

ii) transmit a first packet in subframe n of a first cell of a first cell group in said plurality of cell groups;

iii) transmit a second packet in subframe n+1 of a second cell of a second cell group in said plurality of cell groups, said transmitting of said second packet overlapping in time with said transmitting of said first packet; and

iv) reduce a subframe transmission power of at least one of said first packet and said second packet if a power value is more than a maximum allowable transmission power, a calculation for said power value considering transmission power of said first packet and said second packet if said overlapping in time exceeds a first duration.

12. The wireless device of claim 11, wherein:

a) said plurality of cells comprise a primary cell and at least one secondary cell;

b) said plurality of cell groups comprise a primary cell group and a secondary cell group;

c) said primary cell group comprises a first subset of said plurality of cells comprising cell primary cell; and

d) said secondary cell group comprises a second subset of said at least one secondary cell.

13. The wireless device of claim 11, wherein said calculated power value is a total transmission power of said wireless device.

14. The wireless device of claim 11, wherein said instructions, when executed, further cause said wireless device to determine said first duration such that said total transmission power is less than or equal to said maximum allowable transmission power of said wireless device during said overlapping in time.

15. The wireless device of claim 11, wherein said first duration is more than twenty micro seconds.

16. The wireless device of claim 11, wherein said instructions, when executed, further cause said wireless device to reduce a transient transmission power of at least one of said first packet and said second packet during said overlapping in time, said overlapping in time being less than said first duration.

17. The wireless device of claim 11, wherein said total transmission power is less than or equal to said maximum allowable transmission power of said wireless device during said overlapping in time.

18. The wireless device of claim 11, wherein said calculation considers transmission power of one of said first packet and said second packet if said overlapping in time is less than a second duration.

19. The wireless device of claim 11, wherein said first packet is transmitted on one of:

a) a physical uplink control channel; and

b) a physical uplink shared channel.

20. The wireless device of claim 11, wherein said second packet is transmitted on one of:

a) a physical uplink control channel; and

b) a physical uplink shared channel.