UE supporting low-latency wireless communication, method and apparatus in base station
First Claim
1. A method in a User Equipment (UE) supporting low-latency wireless communication, comprising:
- Step A;
receiving a first signaling, the first signaling indicating at least one of the following;
first information;
whether a target Reference Signal (RS) set is transmitted in a first Long Term Evolution (LTE) timeslot; and
second information;
whether an RS pattern of the target RS set is a first pattern or a second pattern in a second LTE timeslot;
Step B;
according to the indication of the first signaling, receiving the target RS set and a second data in the second LTE timeslot; and
Step B2 of Step B;
according to the target RS set received in the second LTE timeslot, estimating a parameter of a wireless channel through which the second data passes;
wherein;
the target RS set comprises P RSs, P being a positive integer, and the P RSs are respectively mapped to P antenna ports;
the second data is transmitted by the P antenna ports;
the second LTE timeslot is an LTE timeslot that is behind the first LTE timeslot and continuous with the first LTE timeslot;
the first pattern is the RS pattern of the LTE downlink UE-specific Reference Signal (URS) in the LTE timeslot; and
the first information indicates that the target RS set is not transmitted in the first LTE timeslot, or the second information indicates that the RS pattern of the target RS set is the second pattern in the second LTE timeslot.
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Abstract
A UE receives a first signaling indicating whether a Reference Signal (RS) pattern of a target RS set is a first pattern or a second pattern in a second LTE timeslot. Next, according to the indication of the first signaling, the target RS set and a second data are processed by a first operation in the second LTE. The target RS set includes P RSs, P being a positive integer, and the P RSs are respectively mapped to P antenna ports. The second data is transmitted by the P antenna ports. The second LTE timeslot is an LTE timeslot that is behind the first LTE timeslot and continuous with the first LTE timeslot. The first pattern is the RS pattern of the LTE downlink UE-specific Reference Signal in the LTE timeslot. This reduces network delay, improves channel estimation performance in short TTI scenes and maintains compatibility with current LTE equipment.
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Citations
14 Claims
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1. A method in a User Equipment (UE) supporting low-latency wireless communication, comprising:
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Step A;
receiving a first signaling, the first signaling indicating at least one of the following;first information;
whether a target Reference Signal (RS) set is transmitted in a first Long Term Evolution (LTE) timeslot; andsecond information;
whether an RS pattern of the target RS set is a first pattern or a second pattern in a second LTE timeslot;Step B;
according to the indication of the first signaling, receiving the target RS set and a second data in the second LTE timeslot; andStep B2 of Step B;
according to the target RS set received in the second LTE timeslot, estimating a parameter of a wireless channel through which the second data passes;wherein; the target RS set comprises P RSs, P being a positive integer, and the P RSs are respectively mapped to P antenna ports; the second data is transmitted by the P antenna ports; the second LTE timeslot is an LTE timeslot that is behind the first LTE timeslot and continuous with the first LTE timeslot; the first pattern is the RS pattern of the LTE downlink UE-specific Reference Signal (URS) in the LTE timeslot; and the first information indicates that the target RS set is not transmitted in the first LTE timeslot, or the second information indicates that the RS pattern of the target RS set is the second pattern in the second LTE timeslot. - View Dependent Claims (2, 3, 4, 5)
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6. A method in a base station supporting low-latency wireless communication, comprising:
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Step A;
transmitting a first signaling, the first signaling indicating at least one of the following;first information;
whether a target Reference Signal (RS) set is transmitted in a first Long Term Evolution (LTE) timeslot; andsecond information;
whether an RS pattern of the target RS set is a first pattern or a second pattern in a second LTE timeslot;Step B;
according to the indication of the first signaling, transmitting the target RS set and a second data in the second LTE timeslot;wherein; the target RS set comprises P RSs, P being a positive integer, and the P RSs are respectively mapped to P antenna ports; the second data is transmitted by the P antenna ports; the second LTE timeslot is an LTE timeslot that is behind the first LTE timeslot and continuous with the first LTE timeslot; the first pattern is the RS pattern of the LTE downlink UE-specific Reference Signal (URS) in the LTE timeslot; Step B further comprises; Step B2;
determining a modulation coding mode of the second data according to the following assumption;
a target UE estimates a parameter of a wireless channel through which the second data passes according to the target RS set received in the second LTE timeslot; andthe first information indicates that the target RS set is not transmitted in the first LTE timeslot, or the second information indicates that the RS pattern of the target RS set is the second pattern in the second LTE timeslot; and
the target UE is a receiving UE of the target RS set. - View Dependent Claims (7, 8, 9, 10)
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11. A UE supporting low-latency wireless communication, comprising:
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a first receiver configured to receive a first signaling, the first receiver including one or more of hardware and instructions stored in computer-readable storage media, the first signaling indicating at least one of the following; first information;
whether a target RS set is transmitted in a first LTE timeslot; andsecond information;
whether an RS pattern of the target RS set is a first pattern or a second pattern in a second LTE timeslot; anda second receiver that includes one or more of hardware and instructions stored in computer-readable storage media and that is configured to; receive the target RS set and a second data in the second LTE timeslot according to the indication of the first signaling; and according to the target RS set received in the second LTE timeslot, estimate a parameter of a wireless channel through which the second data passes; wherein; the target RS set comprises P RSs, P being a positive integer, and the P RSs are respectively mapped to P antenna ports; the second data is transmitted by the P antenna ports; the second LTE timeslot is an LTE timeslot that is behind the first LTE timeslot and continuous with the first LTE timeslot; the first pattern is the RS pattern of the LTE downlink UE-specific Reference Signal (URS) in the LTE timeslot; and the first information indicates that the target RS set is not transmitted in the first LTE timeslot, or the second information indicates that the RS pattern of the target RS set is the second pattern in the second LTE timeslot. - View Dependent Claims (12)
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13. A base station apparatus supporting low-latency wireless communication, comprising
a first transmitter configured to transmit a first signaling, the first transmitter including one or more of hardware and instructions stored in computer-readable storage media, the first signaling indicating at least one of the following: -
first information;
whether a target RS set is transmitted in a first LTE timeslot; andsecond information;
whether an RS pattern of the target RS set is a first pattern or a second pattern in a second LTE timeslot; anda second transmitter that includes one or more of hardware and instructions stored in computer-readable storage media and that is configured to; transmit the target RS set and a second data by a second operation in the second LTE according to the indication of the first signaling; and determine a modulation coding mode of the second data according to the following assumption;
a target UE estimates a parameter of a wireless channel through which the second data passes according to the target RS set received in the second LTE timeslot;wherein; the target RS set comprises P RSs, P being a positive integer, and the P RSs are respectively mapped to P antenna ports; the second data is transmitted by the P antenna ports; the second LTE timeslot is an LTE timeslot that is behind the first LTE timeslot and continuous with the first LTE timeslot; the first pattern is the RS pattern of the LTE downlink UE-specific Reference Signal (URS) in the LTE timeslot; and the first information indicates that the target RS set is not transmitted in the first LTE timeslot, or the second information indicates that the RS pattern of the target RS set is the second pattern in the second LTE timeslot; and
the target UE is a receiving UE of the target RS set. - View Dependent Claims (14)
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Specification