Transmission of sounding reference signals in TDD communication systems
AssigneeSamsung Electronics Co., Ltd.
InventorsAris Papasakellariou, Joon Young Cho
Life of this patent
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Abstract
A method and apparatus for transmitting and receiving a Sounding Reference Signal (SRS) to a network in a communication system. A bandwidth allocated by the network to transmissions of one or more random access channels is determined. An SRS bandwidth configuration is reconfigured by setting a maximum bandwidth value of the SRS bandwidth configuration to a value that avoids overlapping the bandwidth allocated to transmissions of the one or more random access channels. The SRS is transmitted in accordance with a bandwidth from the reconfigured SRS bandwidth configuration. Information regarding the SRS bandwidth configuration is provided to a User Equipment (UE) by the network.
Claims31
A method for a User Equipment (UE) to transmit a Sounding Reference Signal (SRS) to a network in a communication system, the method comprising steps of:
- identifying a plurality of SRS bandwidth configurations for a given operating bandwidth, wherein each SRS bandwidth configuration comprises a plurality of SRS bandwidths;
- receiving a cell-specific parameter and a UE-specific parameter, wherein the cell-specific parameter is indicative of an SRS bandwidth configuration of the plurality of SRS bandwidth configurations, and the UE-specific parameter is indicative of an SRS bandwidth of the plurality of SRS bandwidths, where a pair of the cell-specific parameter and the UE-specific parameter corresponds to a SRS bandwidth;
- reconfiguring the SRS bandwidth to a maximum SRS bandwidth that is less than or equal to a value determined by a function of a number of random access channels and a constant in case of Uplink ParT symbol (UpPTS), wherein the maximum SRS bandwidth is associated with one of the plurality of SRS bandwidth configurations;
- and
- transmitting the SRS based on the reconfigured SRS bandwidth,
- wherein the maximum SRS bandwidth is one of a plurality of SRS bandwidths, and the plurality of SRS bandwidths correspond to a UE-specific parameter having a lowest index.
A method for a network to receive a Sounding Reference Signal (SRS) from a User Equipment (UE) in a communication system, comprising steps of:
- identifying a plurality of SRS bandwidth configurations for a given operating bandwidth, wherein each SRS bandwidth configuration comprises a plurality of SRS bandwidths;
- transmitting, to the UE, a cell-specific parameter and a UE-specific parameter, wherein the cell-specific parameter is indicative of an SRS bandwidth configuration of the plurality of SRS bandwidth configurations, and the UE-specific parameter is indicative of an SRS bandwidth of the plurality of SRS bandwidths of the SRS bandwidth configuration;
- and
- receiving and processing an SRS transmission based on a bandwidth from a reconfigured SRS bandwidth configuration, which was reconfigured by the UE,
- wherein the SRS bandwidth is reconfigured to a maximum SRS bandwidth that is equal to or less than a value determined by a function of a number of random access channels and a constant in case of Uplink ParT symbol (UpPTS), where the maximum SRS bandwidth is associated with one of the plurality of SRS bandwidth configurations, and
- wherein the maximum SRS bandwidth is one of a plurality of SRS bandwidths, and the plurality of SRS bandwidths correspond to a UE-specific parameter having a lowest index.
A User Equipment (UE) for transmitting a Sounding Reference Signal (SRS) to a network in a communication system, the UE comprising:
- a transceiver for transmitting and receiving a signal;
- and
- a sub-carrier mapper
- for identifying a plurality of SRS bandwidth configurations for a given operating bandwidth, wherein each SRS bandwidth configuration comprises a plurality of SRS bandwidths,
- for receiving a cell-specific parameter and a UE-specific parameter, wherein the cell-specific parameter is indicative of an SRS bandwidth configuration of the plurality of SRS bandwidth configurations, and the UE-specific parameter is indicative of an SRS bandwidth of the plurality of SRS bandwidths, where a pair of the cell-specific parameter and the UE-specific parameter corresponds to a SRS bandwidth,
- for reconfiguring the SRS bandwidth to a maximum SRS bandwidth that is equal to or less than a value determined by a function of a number of random access channels and a constant in case of Uplink ParT symbol (UpPTS), where the maximum SRS bandwidth is associated with one of the plurality of SRS bandwidth configurations, and
- for transmitting the SRS based on the reconfigured SRS bandwidth, wherein the maximum SRS bandwidth is one of a plurality of SRS bandwidths, and the plurality of SRS bandwidths correspond to a UE-specific parameter having a lowest index.
A network for receiving a Sounding Reference Signal (SRS) from a User Equipment (UE) in a communication system, the network comprising:
- a sub-carrier mapper for identifying a plurality of SRS bandwidth configurations for a given operating bandwidth, wherein each SRS bandwidth configuration comprises a plurality of SRS bandwidths;
- a transmitter for transmitting, to the UE, a cell-specific parameter and a UE-specific parameter, wherein the cell-specific parameter is indicative of an SRS bandwidth configuration of the plurality of SRS bandwidth configurations, and the UE-specific parameter is indicative of an SRS bandwidth of the plurality of SRS bandwidths of the SRS bandwidth configuration;
- and
- a receiver for receiving and processing an SRS transmission based on a bandwidth from a reconfigured SRS bandwidth configuration, which was reconfigured by the UE,
- wherein the SRS bandwidth is reconfigured to a maximum SRS bandwidth that is equal to or less than a value determined by a function of a number of random access channels and a constant in case of Uplink ParT symbol (UpPTS), where the maximum SRS bandwidth is associated with one of the plurality of SRS bandwidth configurations, and
- wherein the maximum SRS bandwidth is one of a plurality of SRS bandwidths, and the plurality of SRS bandwidths correspond to a UE-specific parameter having a lowest index.
Dependencies are inferred from the claim text.