User equipment and method for contention-based communications over allocated PUSCH resources
First Claim
1. A method perforated by user equipment (UE) for random access transmission of user data, the method comprising:
- receiving an allocation of physical uplink shared channel (PUSCH) resources from an enhanced or evolved Node B (eNB) for random access;
transmitting a contention sequence and user data on the allocated resources in accordance with a random-access technique, wherein the contention sequence comprises a codeword unique to the UE or a contention preamble;
performing a procedure for grant of PUSCH resources for use in accordance with a non-random access technique when the user data is successfully received; and
refraining from performing a procedure for grant of PUSCH resources for use in accordance with a non-random access technique when the user data is successfully received.
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Accused Products
Abstract
Methods for contention-based transmission with contention-free feedback for reduced latency in LTE Advanced networks and an enhanced PUCCH are generally disclosed herein. User equipment (UE) may transmit a contention sequence on a physical uplink control channel (PUCCH) to an enhanced-Node B (eNB) and may concurrently transmit data requesting uplink resources on a physical uplink shared channel (PUSCH) to the eNB. The contention sequence is transmitted on the PUCCH in accordance with a format that is assigned by the eNB. The contention sequence is either randomly selected by the UE or assigned by the eNB. When the contention sequence and data are not successfully received by the eNB, the UE may fall back to a more conventional random access channel (RACH) procedure for uplink resource allocation.
21 Citations
31 Claims
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1. A method perforated by user equipment (UE) for random access transmission of user data, the method comprising:
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receiving an allocation of physical uplink shared channel (PUSCH) resources from an enhanced or evolved Node B (eNB) for random access; transmitting a contention sequence and user data on the allocated resources in accordance with a random-access technique, wherein the contention sequence comprises a codeword unique to the UE or a contention preamble; performing a procedure for grant of PUSCH resources for use in accordance with a non-random access technique when the user data is successfully received; and refraining from performing a procedure for grant of PUSCH resources for use in accordance with a non-random access technique when the user data is successfully received. - View Dependent Claims (2, 3, 4, 5, 6, 25, 26, 27, 28)
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7. A method performed by user equipment (UE) comprising:
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receiving an allocation of physical uplink shared channel (PUSCH) resources from an enhanced or evolved Node B (eNB); and transmitting a sequence and a payload within the allocated PUSCH resources for receipt by another UE, the sequence comprising a contention sequence that comprises a codeword unique to the UE or a contention preamble; performing a procedure for want of PUSCH resources for use in accordance with a non-random access technique when the user data is not successfully received; and refraining from performing a procedure for grant of PUSCH resources for use in accordance with a non-random access technique when the user data is successfully received. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. User equipment (UE) comprising a transceiver arranged to:
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receive an allocation of physical uplink shared channel (PUSCH) resources from an enhanced or evolved Node B (eNB); and transmit a sequence and a payload within the allocated PUSCH resources for receipt by another UE, the sequence comprising a contention sequence that comprises a codeword unique to the UE or a contention preamble; performing a procedure for grant of PUSCH resources for use in accordance with a non-random access technique when the user data is not successfully received; and refraining from performing a procedure for grant of PUSCH resources for use in accordance with a non-random access technique when the user data is successfully received. - View Dependent Claims (20, 21, 22, 23, 24)
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29. A method performed by user equipment (UE) for random access transmission of user data, the method comprising:
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receiving an allocation of physical uplink shared channel (PUSCH) resources from an enhanced or evolved Node B (eNB) for random access; transmitting a contention sequence and user data on the allocated resources in accordance with a random-access technique, wherein the contention sequence comprises a codeword unique to the UE or a contention preamble; receiving a restriction on concurrent transmissions within a same subframe; and in response to receiving the restriction, transmitting the contention sequence on physical uplink control channel (PUCCH) resources and the user data on the PUSCH resources within different subframes and with a fixed time-offset therebetween.
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30. A method performed by user equipment (UE) for random access transmission of user data, the method comprising:
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receiving an allocation of physical uplink shared channel 0˜
U SCH) resources from an enhanced or evolved Node B (eNB) for random access;transmitting a contention sequence and user data on the allocated resources in accordance with a random-access technique, wherein the contention sequence comprises a codeword unique to the UE or a contention preamble; receiving a random-access response (RAR) from the eNB; determining whether the RAR is able to be decoded, whether the RAR comprises an identity of a detected sequence, and whether the detected sequence corresponds to the contention sequence; acknowledging receipt of the RAR in response to the detected sequence corresponding to the contention sequence and otherwise refraining from acknowledging the RAR; and receiving a grant of uplink resources in response to acknowledging receipt of the RAR.
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31. A method performed by user equipment (UE) for random access transmission of user data, the method comprising:
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receiving an allocation of physical uplink shared channel (PUSCH) resources from an enhanced or evolved Node B (eNB) for random access; transmitting a contention sequence and user data on the allocated resources in accordance with a random-access technique; performing a procedure for grant of PUSCH resources for use in accordance with a non-random access technique when the user data, is not successfully received; and refraining from performing a procedure for grant of PUSCH resources for use in accordance with a non-random access technique when the user data is successfully received.
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Specification