US2021160789A1PendingUtilityA1
Systems And Methods Of Performing Power Control Of A Physical Channel In A Communication System
Est. expirySep 30, 2036(~10.2 yrs left)· nominal 20-yr term from priority
H04W 52/18H04W 52/0209H04W 52/08H04W 52/267H04W 72/0446H04W 52/146H04W 52/325H04W 52/06
65
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Claims
Abstract
Systems and methods for performing power control of a physical channel in a communication system are provided. In one exemplary embodiment, a method in a wireless device of performing power control of a physical channel in a wireless communication system may include determining a transmission power for a transmission on the physical channel according to a power control loop. Further, the loop may specify the transmission power based on at least one parameter. Also, a value of the at least one parameter may be dependent on which of different transmission time interval (TTI) lengths defined as usable on the physical channel is selected for the transmission on the physical channel.
Claims
exact text as granted — not AI-modified1 . A method in a wireless device of performing power control of a physical channel in a wireless communication system, comprising:
determining a transmission power for a transmission on the physical channel according to a power control loop, wherein the loop specifies the transmission power based on at least one parameter, with a value of the at least one parameter being dependent on which of different transmission time interval (TTI) lengths defined as usable on the physical channel is selected for the transmission on the physical channel.
2 . The method of claim 1 , wherein the at least one parameter has a different value for each TTI length usable on the physical channel.
3 . The method of any of claim 1 , wherein the value of the at least one parameter further depends on which of different transmission formats defined as usable on the physical channel is selected for the transmission on the physical channel.
4 . The method of claim 3 wherein the at least one parameter has a different value for each transmission format usable on the physical channel.
5 . The method of claim 1 , wherein the value of the at least one parameter is based on a power adjustment for the transmission on the physical channel having the selected TTI length.
6 . The method of claim 1 , wherein the value of the at least one parameter is based on a ratio of a power adjustment for the transmission on the physical channel having the selected TTI length and a power adjustment for the transmission on the physical channel having a predetermined TTI length.
7 . The method of claim 1 , wherein the value of the at least one parameter is based on a number of symbols in the transmission on the physical channel having the selected TTI length.
8 . The method of claim 1 , wherein the value of the at least one parameter is based on a ratio of a number of symbols in a transmission on the physical channel having the selected TTI length and a number of symbols in a transmission on the physical channel having a predetermined TTI length.
9 . The method of claim 8 , wherein the ratio is represented as follows:
1
0
log
1
0
(
TTIsymbols
selected
TTIsymbols
predetermined
)
,
wherein TTIsymbols selected is the selected number of TTI symbols, and TTIsymbols predetermined is the predetermined number of TTI symbols.
10 . The method of claim 8 , wherein the ratio is further represented as follows:
a
10
log
1
0
(
TTIpilotsymbols
selected
TTIpilotsymbols
predetermined
)
+
b
10
log
1
0
(
TTIcontrolsymbols
selected
TTIcontrolsymbols
predetermined
)
wherein the selected number of TTI symbols corresponds to a selected number of pilot symbols (TTIpilotsymbols selected ) and a selected number of control symbols (TTIcontrolsymbols selected ), and the predetermined number of TTI symbols corresponds to a predetermined number of pilot symbols (TTIpilotsymbols predetermined ) and a predetermined number of control symbols (TTIcontrolsymbols predetermined ) wherein a and bare constants.
11 . The method of claim 1 , wherein the value of the at least one parameter is based on a ratio of the selected TTI length and a predetermined TTI length.
12 . The method of claim 8 , wherein the ratio is represented as follows:
10
log
1
0
(
TTIlength
selected
TTIlength
predetermined
)
,
wherein TTIlength selected is the selected TTI length, and TTIlength predetermined is the predetermined TTI length.
13 . The method of claim 8 , wherein the ratio is further represented as follows:
a
10
log
1
0
(
TTIpilotlength
selected
TTIpilotlength
predetermined
)
+
b
10
log
1
0
(
TTIcontrollength
selected
TTIcontrollength
predetermined
)
,
wherein the selected TTI length corresponds to a selected pilot symbols length (TTIpilotlength selected ) and a selected control symbols length (TTIcontrollength seleted ),
wherein the predetermined TTI length corresponds to a predetermined pilot symbols length (TTIpilotlength predetermined ) and a predetermined control symbols length (TTIcontrollength predetermined ), and
wherein a and bare constants.
14 . The method of claim 1 , wherein the selected TTI length or selected number of TTI symbols corresponds to a short TTI having a length of less than one millisecond or less than 14 symbols and/or the predetermined TTI length is one millisecond or the predetermined number of TTI symbols is fourteen.
15 . The method of claim 1 , wherein the value of the at least one parameter is based on a predetermined received power for the physical channel having the selected TTI length.
16 . The method of claim 1 , wherein the value of the at least one parameter is based on an adjustment that depends on whether frequency hopping is used for the transmission on the physical layer having the selected TTI length.
17 . The method of claim 1 , wherein the physical channel is a control channel and/or wherein the physical channel is an uplink channel.
18 . A wireless device for performing power control of physical channels in a wireless communication system, the wireless device configured to:
determine a transmission power for a transmission on the physical channel according to a power control loop, wherein the loop specifies the transmission power based on at least one parameter, with a value of the at least one parameter being dependent on which of different transmission time interval (TTI) lengths defined as usable on the physical channel is selected for the transmission on the physical channel.
19 . A wireless device for performing power control of physical channels in a wireless communication system, comprising:
a processor and a memory, the memory containing instructions executable by the processor whereby the wireless device is configured to:
determine a transmission power for a transmission on the physical channel according to a power control loop, wherein the loop specifies the transmission power based on at least one parameter, with a value of the at least one parameter being dependent on which of different transmission time interval (TTI) lengths defined as usable on the physical channel is selected for the transmission on the physical channel.
20 . A wireless device ( 105 , 200 , 300 , 400 , 600 ) for performing power control of physical channels in a wireless communication system, the wireless device configured to:
receive from a network node ( 101 , 800 , 900 , 1000 ), an indication of a value of at least one parameter ( 111 ) which is dependent on which of different transmission time interval (TTI) lengths defined as usable on the physical channel is selected for the transmission on the physical channel, wherein a transmission power for a transmission on the physical channel is according to a power control loop, and wherein the power control loop specifies the transmission power based on the parameter.
21 . The wireless device as claimed in claim 18 , wherein the value of the at least one parameter further depends on which of different transmission formats defined as usable on the physical channel is selected for the transmission on the physical channel.
22 . The wireless device as claimed in claim 18 , wherein the value of the at least one parameter is based on a number of symbols in the transmission on the physical channel having the selected TTI length.
23 . The wireless device as claimed in claim 18 , configured to perform the method of any of claims 2 - 17 .
24 . A method in a wireless device ( 105 , 200 , 300 , 400 , 600 ) for performing power control of physical channels in a wireless communication system ( 100 ), comprising:
receiving, by the wireless device, from a network node ( 101 , 800 , 900 , 1000 ),
an indication of a value of at least one parameter ( 111 ) which is dependent on which of different transmission time interval (TTI) lengths defined as usable on the physical channel is selected for the transmission on the physical channel,
wherein a transmission power for a transmission on the physical channel is according to a power control loop, and wherein the power control loop specifies the transmission power based on the parameter.
25 . The method of claim 24 , further comprising:
determining the transmission power for the physical channel based on the parameter.
26 . A method in a network node ( 101 , 800 , 900 , 1000 ) for performing power control of physical channels in a wireless communication system ( 100 ), comprising:
transmitting ( 1103 ), by the network node, to a wireless device ( 105 , 200 , 300 , 400 , 600 ), an indication of a value of at least one parameter ( 111 ) which is dependent on which of different transmission time interval (TTI) lengths defined as usable on the physical channel is selected for the transmission on the physical channel,
wherein a transmission power for a transmission by the wireless device on the physical channel is according to a power control loop, and wherein the power control loop specifies the transmission power based on the parameter.
27 . A network node ( 101 , 800 , 900 , 1000 ) for performing power control of physical channels in a wireless communication system ( 100 ), the network node configured to:
transmit ( 1103 ), to a wireless device ( 105 , 200 , 300 , 400 , 600 ), an indication of a value of at least one parameter ( 111 ) which is dependent on which of different transmission time interval (TTI) lengths defined as usable on the physical channel is selected for the transmission on the physical channel,
wherein a transmission power for a transmission by the wireless device on the physical channel is according to a power control loop, and wherein the power control loop specifies the transmission power based on the parameter.
28 . A network node for performing power control of physical channels in a wireless communication system, comprising:
a processor and a memory, the memory containing instructions executable by the processor whereby the network node is configured to: transmit ( 1103 ), to a wireless device ( 105 , 200 , 300 , 400 , 600 ), a value of at least one parameter ( 111 ) which is dependent on which of different transmission time interval (TTI) lengths defined as usable on the physical channel is selected for the transmission on the physical channel,
wherein a transmission power for a transmission by the wireless device on the physical channel is according to a power control loop, and wherein the power control loop specifies the transmission power based on the parameter.
29 . A computer program product stored in a non-transitory computer readable medium for controlling a wireless device in a communication system, the computer program product comprising software instructions which, when run on the wireless device, cause the wireless device to:
determine a transmission power for a transmission on the physical channel according to a power control loop, wherein the loop specifies the transmission power based on at least one parameter, with a value of the at least one parameter being dependent on which of different transmission time interval (TTI) lengths defined as usable on the physical channel is selected for the transmission on the physical channel.Join the waitlist — get patent alerts
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