Configuration of reference signals in wireless communication systems

A method of wireless communication, comprising:

• receiving, by a network node from a wireless device, a sounding reference signal (SRS);
• and
• performing, based on the SRS, further communication with the wireless device,
• wherein the sounding reference signal is determined by a first parameter and a cyclic shift (CS) parameter, wherein a value of the first parameter hops at a level of a first type of time unit and a value of the cyclic shift parameter hops at a level of a second type of time unit,
• wherein the first parameter includes a sequence number v or a group number,
• wherein a hopping pattern for the first parameter is based on a first pseudo-random sequence generated by a first value of an initialization parameter (cinit), and wherein a hopping pattern for the CS parameter is based on a second pseudo-random sequence generated by a second value of the initialization parameter,
• wherein the first value of the initialization parameter is determined as:
• c
• init
• =
• n
• ID
• SRS
• ,
• wherein
• n
• ID
• SRS
• is an integer value configured for an SRS resource of the SRS,
• wherein the second value of the initialization parameter is determined as:
• c
• i
• ⁢
• nit
• =
• n
• ID
• ,
• 2
• SRS
• ,
• and
• wherein
• n
• ID
• ,
• 2
• SRS
• is a second integer value configured for the SRS resource of the SRS.

An apparatus for wireless communication, comprising:

• one or more processors configured to:
• transmit, by a wireless device to a network node, a sounding reference signal (SRS),
• wherein the sounding reference signal is determined by a first parameter and a cyclic shift (CS) parameter, wherein a value of the first parameter hops at a level of a first type of time unit and a value of the cyclic shift parameter hops at a level of a second type of time unit,
• wherein the first parameter includes a sequence number v or a group number,
• wherein a hopping pattern for the first parameter is based on a first pseudo-random sequence generated by a first value of an initialization parameter (cinit), and wherein a hopping pattern for the CS parameter is based on a second pseudo-random sequence generated by a second value of the initialization parameter,
• wherein the first value of the initialization parameter is determined as:
• c
• init
• =
• n
• ID
• SRS
• ,
• wherein
• n
• ID
• SRS
• is an integer value configured for an SRS resource of the SRS,
• wherein the second value of the initialization parameter is determined as:
• c
• init
• =
• n
• ID
• ,
• 2
• SRS
• ,
• and
• wherein
• n
• ID
• ,
• 2
• SRS
• is a second integer value configured for the SRS resource of the SRS.

An apparatus for wireless communication, comprising:

• one or more processors configured to:
• receive, by a network node from a wireless device, a sounding reference signal (SRS);
• and
• perform, based on the SRS, further communication with the wireless device,
• wherein the sounding reference signal is determined by a first parameter and a cyclic shift (CS) parameter, wherein a value of the first parameter hops at a level of a first type of time unit and a value of the cyclic shift parameter hops at a level of a second type of time unit,
• wherein the first parameter includes a sequence number v or a group number,
• wherein a hopping pattern for the first parameter is based on a first pseudo-random sequence generated by a first value of an initialization parameter (cinit), and wherein a hopping pattern for the CS parameter is based on a second pseudo-random sequence generated by a second value of the initialization parameter,
• wherein the first value of the initialization parameter is determined as:
• c
• init
• =
• n
• ID
• SRS
• ,
• wherein
• n
• ID
• SRS
• is an integer value configured for an SRS resource of the SRS,
• wherein the second value of the initialization parameter is determined as:
• c
• init
• =
• n
• ID
• ,
• 2
• SRS
• ,
• and
• wherein
• n
• ID
• ,
• 2
• SRS
• is a second integer value configured for the SRS resource of the SRS.