Power distribution method and apparatus
View Patent ↗Disclosed in the present application are a power distribution method and apparatus, used for enabling simultaneous transmission by communication channels using TTI of different lengths by means of controlling the transmission power of the transmission channels respectively using TTI of different lengths to not surpass the permitted maximum transmission power of a device. The method comprises: determining the sum of the transmission powers of an uplink channel using a first TTI length for transmission and of an uplink channel using a second TTI length for transmission in a sub-frame; and when the sum surpasses the permitted maximum transmission power of a device, implementing power distribution according to a predetermined rule, such that the sum does not surpass the permitted maximum transmission power of the device.
1. A method for allocating power, the method comprising:
determining the sum of transmit power of a channel transmitted in a first Transmission Time Interval (TTI) length, and a channel transmitted in a second TTI length in a sub-frame; and
allocating power under a preset rule when the sum exceeds the highest transmit power allowable for a user equipment (UE), so that the sum does not exceeds the highest transmit power allowable for the UE;
wherein the first TTI length is longer than the second TTI length;
wherein the allocating power under the preset rule comprises:
allocating transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length according to a start time of the channel transmitted in the first TTI length, and a start time of the channel transmitted in the second TTI length, in the same sub-frame; and
wherein the allocating transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length according to the start time of the channel transmitted in the first TTI length, and the start time of the channel transmitted in the second TTI length, in the same sub-frame comprises:
allocating transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length, according to the type of the channel transmitted in the first TTI length and/or the type of carried Uplink Control Information (UCI) thereof, and the type of the channel transmitted in the second TTI length and/or the type of carried UCI thereof.
2. The method according to claim 1 , wherein the first TTI length is 1 ms, and the second length is less than 1 ms, or both the first TTI length and the second TTI length are less than 1 ms.
3. The method according to claim 1 , wherein the channel transmitted in the first TTI length and the channel transmitted in the second TTI length are uplink channels.
4. The method according to claim 3 , wherein the channel transmitted in the first TTI length is an uplink control channel or an uplink shared channel, and the channel transmitted in the second TTI length is an uplink control channel or an uplink shared channel.
5. The method according to claim 1 , wherein the allocating transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length according to the start time of the channel transmitted in the first TTI length, and the start time of the channel transmitted in the second TTI length, in the same sub-frame comprises, when the start time of the channel transmitted in the first TTI length is different from the start time of the channel transmitted in the second TTI length, or the difference between the start time of the channel transmitted in the first TTI length, and the start time of the channel transmitted in the second TTI length is above a preset threshold, in the same sub-frame:
allocating transmit power preferentially for the channel with an earlier start time, and reducing transmit power of the channel with a later start time; or
reusing a power control scheme in the Power Control Mode (PCM) 2 with dual connectivity in the Long Term Evolution (LTE) Rel-12.
6. The method according to claim 1 , wherein allocating transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length, according to the type of the channel transmitted in the first TTI length and/or the type of carried UCI thereof, and the type of the channel transmitted in the second TTI length and/or the type of carried UCI thereof comprises:
when the type of the channel transmitted in the first TTI length is different from the type of the channel transmitted in the second TTI length, allocating transmit power preferentially for the channel transmitted in the second TTI length, and reducing transmit power of the channel transmitted in the first TTI length, or allocating transmit power preferentially for an uplink control channel, and reducing transmit power of an uplink shared channel; or
when the type of the channel transmitted in the first TTI length is different from the type of the channel transmitted in the second TTI length, and the type of UCI carried in the channel transmitted in the first TTI length is different from the type of UCI carried in the channel transmitted in the second TTI length, allocating transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length according to priorities of carried UCI thereof; or
when the type of the channel transmitted in the first TTI length is different from the type of the channel transmitted in the second TTI length, and the type of UCI carried in the channel transmitted in the first TTI length is the same as the type of UCI carried in the channel transmitted in the second TTI length, reducing transmit power of the channel transmitted in the first TTI length, and transmit power of the channel transmitted in the second TTI length by the same factor; or
when the type of the channel transmitted in the first TTI length is the same as the type of the channel transmitted in the second TTI length, reducing transmit power of the channel transmitted in the first TTI length, and transmit power of the channel transmitted in the second TTI length by the same factor, or allocating transmit power preferentially for the channel transmitted in the second TTI length; or
when the type of the channel transmitted in the first TTI length is the same as the type of the channel transmitted in the second TTI length, and the type of UCI carried in the channel transmitted in the first TTI length is different from the type of UCI carried in the channel transmitted in the second TTI length, allocating transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length according to priorities of carried UCI thereof.
7. The method according to claim 1 , wherein for a channel for which transmit power is to be reduced, reduce transmit power of all the symbols in the channel.
8. An apparatus for allocating power, the apparatus comprising a processor, a memory, and a transceiver, wherein the transceiver is configured to receive and transmit data under the control of the processor, the memory is configured to store preset program, and the processor is configured to read and execute the program in the memory:
to determine the sum of transmit power of a channel transmitted in a first Transmission Time Interval (TTI) length, and a channel transmitted in a second TTI length in a sub-frame; and
to allocate power under a preset rule when the sum exceeds the highest transmit power allowable for a user equipment (UE), so that the sum does not exceeds the highest transmit power allowable for the UE;
wherein the first TTI length is longer than the second TTI length;
wherein the processor is configured to allocate transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length according to a start time of the channel transmitted in the first TTI length, and a start time of the channel transmitted in the second TTI length, in the same sub-frame; and
wherein the processor configured to allocate transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length according to the start time of the channel transmitted in the first TTI length, and the start time of the channel transmitted in the second TTI length is further configured:
to allocate transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length, according to the type of the channel transmitted in the first TTI length and/or the type of carried UCI thereof, and the type of the channel transmitted in the second TTI length and/or the type of carried UCI thereof.
9. The apparatus according to claim 8 , wherein the first TTI length is 1 ms, and the second length is less than 1 ms, or both the first TTI length and the second TTI length are less than 1 ms.
10. The apparatus according to claim 8 , wherein the channel transmitted in the first TTI length and the channel transmitted in the second TTI length are uplink channels.
11. The apparatus according to claim 10 , wherein the channel transmitted in the first TTI length is an uplink control channel or an uplink shared channel, and the channel transmitted in the second TTI length is an uplink control channel or an uplink shared channel.
12. The apparatus according to claim 8 , wherein the processor configured to allocate transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length according to the start time of the channel transmitted in the first TTI length, and the start time of the channel transmitted in the second TTI length, in the same sub-frame is configured, when the start time of the channel transmitted in the first TTI length is different from the start time of the channel transmitted in the second TTI length, or the difference between the start time of the channel transmitted in the first TTI length, and the start time of the channel transmitted in the second TTI length is above a preset threshold, in the same sub-frame:
to allocate transmit power preferentially for the channel with an earlier start time, and to reduce transmit power of the channel with a later start time; or
to reuse a power control scheme in the Power Control Mode (PCM) 2 with dual connectivity in the Long Term Evolution (LTE) Rel-12.
13. The apparatus according to claim 8 , wherein the processor configured to allocate transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length, according to the type of the channel transmitted in the first TTI length and/or the type of carried UCI thereof, and the type of the channel transmitted in the second TTI length, and/or the type of carried UCI thereof is configured:
when the type of the channel transmitted in the first TTI length is different from the type of the channel transmitted in the second TTI length, to allocate transmit power preferentially for the channel transmitted in the second TTI length, and to reduce transmit power of the channel transmitted in the first TTI length, or to allocate transmit power preferentially for an uplink control channel, and to reduce transmit power of an uplink shared channel; or
when the type of the channel transmitted in the first TTI length is different from the type of the channel transmitted in the second TTI length, and the type of UCI carried in the channel transmitted in the first TTI length is different from the type of UCI carried in the channel transmitted in the second TTI length, to allocate transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length according to priorities of carried UCI thereof; or
when the type of the channel transmitted in the first TTI length is different from the type of the channel transmitted in the second TTI length, and the type of UCI carried in the channel transmitted in the first TTI length is the same as the type of UCI carried in the channel transmitted in the second TTI length, to reduce transmit power of the channel transmitted in the first TTI length, and transmit power of the channel transmitted in the second TTI length by the same factor; or
when the type of the channel transmitted in the first TTI length is the same as the type of the channel transmitted in the second TTI length, to reduce transmit power of the channel transmitted in the first TTI length, and transmit power of the channel transmitted in the second TTI length by the same factor, or to allocate transmit power preferentially for the channel transmitted in the second TTI length; or
when the type of the channel transmitted in the first TTI length is the same as the type of the channel transmitted in the second TTI length, and the type of UCI carried in the channel transmitted in the first TTI length is different from the type of UCI carried in the channel transmitted in the second TTI length, to allocate transmit power respectively for the channel transmitted in the first TTI length, and the channel transmitted in the second TTI length according to priorities of carried UCI thereof.
14. The apparatus according to claim 8 , wherein for a channel for which transmit power is to be reduced, reduce transmit power of all the symbols in the channel.