Adaptive transmission time interval length
First Claim
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1. A method performed by a mobile radio device that communicates with a radio access network node, the method comprising:
- setting, in the radio device, a length of a transmission unit in a short physical uplink control channel (sPUCCH) to a first number of symbols, wherein the sPUCCH is less than a full sub-frame;
autonomously changing the length of the transmission unit in the sPUCCH from the first number of symbols to a second number of symbols based on an amount of control information to be transmitted in the transmission unit to the radio access network node over the sPUCCH; and
transmitting the control information to the radio access network node over the sPUCCH using the second number of symbols as the length of the transmission unit,wherein autonomously changing the length of the transmission unit in the sPUCCH from the first number of symbols to the second number of symbols comprises;
determining acknowledgments for communications received in two or more downlink short transmission units can be multiplexed in the same transmission unit in sPUCCH; and
autonomously changing the length of the transmission unit in the sPUCCH from the first number of symbols to the second number of symbols further based on the determination that control information associated with communications received in the two or more downlink short transmission units can be multiplexed in the same transmission unit in sPUCCH.
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Abstract
A method in a communication system comprising a radio device and radio access network node, the method comprising and/or initiating a step of setting, in the radio device, a length of a transmission time interval (TTI) in a physical uplink control channel; a step of transmitting control information, by the radio device, over the physical uplink control channel with the set transmission time interval length; and a step of changing the transmission time interval length to be set by said radio device based on a channel or payload characteristic between said radio device and said radio access network node.
26 Citations
30 Claims
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1. A method performed by a mobile radio device that communicates with a radio access network node, the method comprising:
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setting, in the radio device, a length of a transmission unit in a short physical uplink control channel (sPUCCH) to a first number of symbols, wherein the sPUCCH is less than a full sub-frame; autonomously changing the length of the transmission unit in the sPUCCH from the first number of symbols to a second number of symbols based on an amount of control information to be transmitted in the transmission unit to the radio access network node over the sPUCCH; and transmitting the control information to the radio access network node over the sPUCCH using the second number of symbols as the length of the transmission unit, wherein autonomously changing the length of the transmission unit in the sPUCCH from the first number of symbols to the second number of symbols comprises; determining acknowledgments for communications received in two or more downlink short transmission units can be multiplexed in the same transmission unit in sPUCCH; and autonomously changing the length of the transmission unit in the sPUCCH from the first number of symbols to the second number of symbols further based on the determination that control information associated with communications received in the two or more downlink short transmission units can be multiplexed in the same transmission unit in sPUCCH. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method performed by a radio access network node that communicates with a mobile radio device, the method comprising:
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setting a length of a transmission unit in a short physical uplink control channel (sPUCCH) between the radio access network node and the radio device as a first number of symbols, wherein the sPUCCH is less than a full sub-frame; transmitting, toward the mobile radio device, an indicator of the first number of symbols as the length of the transmission unit of the sPUCCH; and receiving, from the mobile radio device, control information in the sPUCCH with the length of transmission unit autonomously changed to a second number of symbols by the mobile radio device based on an amount of the control information received from the mobile radio device over the sPUCCH, wherein the control information comprises acknowledgments multiplexed into the same transmission unit in sPUCCH for communications transmitted to the mobile radio device in two or more downlink short transmission units. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A mobile radio device configured to communicate with a radio access network node, the mobile radio device comprising:
a processing circuit and a memory, the memory storing code that when executed by the processing circuit causes the processing circuit to operate to; set, in the mobile radio device, a length of a transmission unit in a short physical uplink control channel (sPUCCH) to a first number of symbols, wherein the sPUCCH is less than a full sub-frame; and autonomously change the length of the transmission unit in the sPUCCH from the first number of symbols to a second number of symbols based on an amount of control information to be transmitted to the radio access network node over the sPUCCH; transmit the control information to the radio access network node over the sPUCCH using the second number of symbols as the length of the transmission unit, wherein autonomously change the length of the transmission unit in the sPUCCH from the first number of symbols to the second number of symbols comprises; determine acknowledgments for communications received in two or more downlink short transmission units can be multiplexed in the same transmission unit in sPUCCH; and autonomously change the length of the transmission unit in the sPUCCH from the first number of symbols to the second number of symbols further based on the determination that control information associated with communications received in the two or more downlink short transmission units can be multiplexed in the same transmission unit in sPUCCH.
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30. A radio access network node configured to communicate with a mobile radio device, the radio access node comprising:
a processing circuit and a memory, the memory storing code that when executed by the processing circuit causes the processing circuit to operate to; set a length of a transmission unit in a short physical uplink control channel (sPUCCH) between the radio access network node and the mobile radio device as a first number of symbols, wherein the sPUCCH is less than a full sub-frame; and transmit, toward the mobile radio device, an indicator of the first number of symbols as the length of the transmission unit of the sPUCCH; and receive, from the mobile radio device, control information in the sPUCCH with the length of transmission unit autonomously changed to a second number of symbols by the mobile radio device based on an amount of the control information received from the mobile radio device over the sPUCCH, wherein the control information comprises acknowledgments multiplexed into the same transmission unit in sPUCCH for communications transmitted to the mobile radio device in two or more downlink short transmission units.
Specification