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US 12,756,521 B2Granted
SRS configurations and SRS transmission
AssigneeLenovo (Beijing) Limited
InventorsBingchao Liu, Chenxi Zhu, Wei Ling, Haipeng Lei
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses for SRS enhancement are disclosed. In one embodiment, a method comprises configuring one or more cell IDs for SRS; and sending the configured cell ID(s) for SRS using higher layer signaling. In some embodiment, the method further comprises determining reserved transmission resources only for SRS transmission; and transmitting resource configuration parameters for the reserved transmission resources.
Claims20
A method performed by a base station, the method comprising:
- determining a reserved subframe only usable for sounding reference signal (SRS) transmission, wherein one or more orthogonal frequency division multiplexing (OFDM) symbols of the reserved subframe are used for the SRS transmission;
- transmitting information indicating the reserved subframe, wherein the information:
- comprises a 14-bit bitmap, each bit of the 14-bit bitmap corresponding to a respective OFDM symbol of the reserved subframe;
- and
- indicates, based on a value of each bit of the 14-bit bitmap, whether a corresponding OFDM symbol of the reserved subframe is used for SRS transmission;
- configuring a plurality of SRS transmission types for the reserved subframe, wherein a first SRS transmission type and a second SRS transmission type are associated with different SRS transmission parameter groups;
- and
- transmitting an SRS configuration format comprising a first indicator indicating the first SRS transmission type and a second indicator indicating the second SRS transmission type.
5 more elements
A base station, comprising:
- at least one memory;
- and
- at least one processor coupled with the at least one memory and configured to cause the base station to:
- determine a reserved subframe only usable for sounding reference signal (SRS) transmission, wherein one or more orthogonal frequency division multiplexing (OFDM) symbols of the reserved subframe are used for the SRS transmission;
- transmit information indicating the reserved subframe, wherein the information:
- comprises a 14-bit bitmap, each bit of the 14-bit bitmap corresponding to a respective OFDM symbol of the reserved subframe;
- and
- indicates, based on a value of each bit of the 14-bit bitmap, whether a corresponding OFDM symbol of the reserved subframe is used for SRS transmission;
- configure a plurality of SRS transmission types for the reserved subframe, wherein a first SRS transmission type and a second SRS transmission type are associated with different SRS transmission parameter groups;
- and
- transmit an SRS configuration format comprising a first indicator indicating the first SRS transmission type and a second indicator indicating the second SRS transmission type.
8 more elements
A method performed by a user equipment (UE), the method comprising:
- receiving information indicating a reserved subframe only usable for sounding reference signal (SRS) transmission, wherein one or more orthogonal frequency division multiplexing (OFDM) symbols of the reserved subframe are used for the SRS transmission, and wherein the information:
- comprises a 14-bit bitmap, each bit of the 14-bit bitmap corresponding to a respective OFDM symbol of the reserved subframe;
- indicates, based on a value of each bit of the 14-bit bitmap, whether a corresponding OFDM symbol of the reserved subframe is used for SRS transmission;
- receiving configuration information configuring a plurality of SRS transmission types for the reserved subframe, wherein a first SRS transmission type is associated with a first group of SRS transmission parameters, and a second SRS transmission type is associated with a second group of SRS transmission parameters different from the first group of SRS transmission parameters;
- determining, for each OFDM symbol of the reserved subframe, an SRS transmission type to be applied based on the 14-bit bitmap;
- and
- transmitting an SRS in one or more OFDM symbols of the reserved subframe in accordance with the determined SRS transmission type for each OFDM symbol.
4 more elements
A user equipment (UE), comprising:
- at least one memory;
- and
- at least one processor coupled with the at least one memory and configured to cause the UE to:
- receive information indicating a reserved subframe only usable for sounding reference signal (SRS) transmission, wherein one or more orthogonal frequency division multiplexing (OFDM) symbols of the reserved subframe are used for the SRS transmission, and wherein the information:
- comprises a 14-bit bitmap, each bit of the 14-bit bitmap corresponding to a respective OFDM symbol of the reserved subframe;
- indicates, based on a value of each bit of the 14-bit bitmap, whether a corresponding OFDM symbol of the reserved subframe is used for SRS transmission;
- receive configuration information configuring a plurality of SRS transmission types for the reserved subframe, wherein a first SRS transmission type is associated with a first group of SRS transmission parameters, and a second SRS transmission type is associated with a second group of SRS transmission parameters different from the first group of SRS transmission parameters;
- determine, for each OFDM symbol of the reserved subframe, an SRS transmission type to be applied based on the 14-bit bitmap;
- and
- transmit an SRS in one or more OFDM symbols of the reserved subframe in accordance with the determined SRS transmission type for each OFDM symbol.
7 more elements
Dependencies are inferred from the claim text.