METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNALS IN COMMUNICATION SYSTEMS
First Claim
1. A method for transmitting Reference Signals (RS) that are scrambled with parts of a common scrambling sequence to User Equipments (UEs) by a Node B and a Relay Node (RN) in a communication system, the method comprising the steps of:
- transmitting RS by the Node B in a first set of transmission instances; and
transmitting RS by the RN in a second set of transmission instances, wherein the first set and the second set do not have any common transmission instances.
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Accused Products
Abstract
Methods and apparatus are described for a Relay Node (RN) that is transparent to User Equipments to transmit, together with a base station (Node B), Reference Signals (RS) to UEs, to receive RS from UEs, to perform transmissions of Transport Blocks (TBs) to the Node B or to UEs and receptions of TBs from the Node B or from UEs, where the transmissions of TBs from the RN are for retransmissions associated with a Hybrid Automatic Repeat reQuest (HARQ) process for the same TBs, and enabling the Node B to obtain control information signaled from UEs while signaling from the RN interferers with that signaling of control information.
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Citations
43 Claims
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1. A method for transmitting Reference Signals (RS) that are scrambled with parts of a common scrambling sequence to User Equipments (UEs) by a Node B and a Relay Node (RN) in a communication system, the method comprising the steps of:
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transmitting RS by the Node B in a first set of transmission instances; and transmitting RS by the RN in a second set of transmission instances, wherein the first set and the second set do not have any common transmission instances. - View Dependent Claims (2, 3, 4, 5)
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6. A method for transmitting Reference Signals (RS) that are scrambled with parts of a common scrambling sequence to User Equipments (UEs) by a Node B and a Relay Node (RN) in a communication system, the method comprising the steps of:
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transmitting RS by the Node B in a first set of transmission instances; and transmitting RS by the RN in a second set of transmission instances, wherein the second set is a subset of the first set. - View Dependent Claims (7, 8, 9, 10)
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11. A method for receiving Reference Signals (RS) transmitted from a User Equipment (UE) in a communication system by a Node B and a Relay Node (RN), the method comprising the steps of
signaling by the Node B RS transmission parameters to the UE; -
obtaining by the RN the RS transmission parameters; and receiving by the RN and the Node B the RS transmitted from the UE. - View Dependent Claims (12, 13, 14)
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15. A method for transmitting Reference Signals (RS) that are scrambled with parts of a common scrambling sequence to User Equipments (UEs) by a Relay Node (RN) in a communication system, the method comprising the steps of:
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determining by the RN Resource Elements (REs) where the UE transmits control information; and transmitting by the RN information that is already known to the Node B in the REs where the UE transmits control information. - View Dependent Claims (16, 17)
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18. A method for transmitting same Transport Block (TB) to a User Equipment (UE) or a Node B by one of a Node B and a User Equipment (UE) and a Relay Node (RN) in a communication system, respectively, the method comprising the steps of:
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transmitting by one of the Node B and the UE the TB for a first number of transmissions associated with a Hybrid Automatic Repeat reQuest (HARQ) process number; and transmitting by the RN the TB for a second number of transmissions associated with the HARQ process number wherein the second number of transmissions is smaller than the first number of transmissions. - View Dependent Claims (19)
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20. A method for performing retransmissions of a Transport Block (TB) by a Relay Node (RN), for a synchronous non-adaptive Hybrid Automatic Repeat reQuest (HARQ) process having a reference HARQ process number, to a first Node, where an initial transmission of the TB for the reference HARQ process number was performed by a second Node, the method comprising the steps of:
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receiving by the RN an acknowledgement signal with negative value (NACK) that is transmitted from the first Node in response to TB reception for the reference HARQ process number; and transmitting by the RN to the first Node the TB for the reference HARQ process number in response to the acknowledgement signal in accordance with the HARQ process. - View Dependent Claims (21)
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22. A method for performing retransmissions of a Transport Block (TB), for a synchronous non-adaptive Hybrid Automatic Repeat reQuest (HARQ) process having a reference HARQ process number, to a first Node, where an initial transmission of the TB for the reference HARQ process number was performed by a second Node, the method comprising the steps of
receiving by the RN a Scheduling Assignment (SA) that is transmitted from a Node B Iii and indicates transmission of the same TB through a New Data Indicator (NDI) Information Element (IE); - and
transmitting by the RN to the first Node the TB for the reference HARQ process number in response to the SA in accordance with the HARQ process. - View Dependent Claims (23, 24, 25)
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26. In a communication system, a method for a Relay Node (RN) to pertbrm retransmissions a Transport Block (TB), for an asynchronous adaptive Hybrid Automatic Repeat reQuest (HARQ) process having a reference HARQ process number, to a first Node, where an initial transmission of the TB for the reference HARQ process number was performed by a second Node, the method comprising the steps of:
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receiving by the RN a Scheduling Assignment (SA) that is transmitted from a Node B and indicates transmission of the same TB through a New Data Indicator (NDI) Information Element (IE) and through a HARQ process number IE that indicates the reference HARQ process number; and transmitting by the RN to the first Node the TB for the reference HARQ process number in response to the SA in accordance with the HARQ process. - View Dependent Claims (27, 28, 29)
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30. A method for transmitting a Transport Block (TB) by a Relay Node (RN) to a first Node for retransmissions associated with a reference Hybrid Automatic Repeat reQuest (HARQ) process number, where an initial transmission of the TB to the UE for the reference HARQ process number was performed by a second Node, the method comprising the steps of:
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receiving by the RN a first Scheduling Assignment (SA) transmitted from a Node B in a first Transmission Time Interval (TTI); receiving by the RN the initial transmission of the TB from the second Node for the reference HARQ process number in a second TTI; receiving by the RN a second SA transmitted from the Node B in a third TTI that configures a transmission from the RN to the first Node for a retransmission of the TB for the reference HARQ process number; transmitting from the Node B to a User Equipment (UE) a third SA in a fourth TTI that configures a transmission from the second Node to the first Node in a fifth TTI for the retransmission of the TB for the reference HARQ process number; and transmitting by the RN to the first Node in the fifth TTI the retransmission of the TB for the reference HARQ process number in accordance with the second SA. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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39. An apparatus for transmitting Reference Signals (RS) that are scrambled with parts of a common scrambling sequence to User Equipments (UEs) by a Node B and a Relay Node (RN) in a communication system, the apparatus comprising:
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a first transmitter for transmitting RS by the Node B in a first set of transmission instances; and a second transmitter for transmitting RS by the RN in a second set of transmission instances, wherein the first set and the second set do not have any common transmission instances. - View Dependent Claims (40, 41, 42, 43)
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Specification