Sequence generating and processing method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsKunpeng Liu, Mingxin Gong, Leiming Zhang
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Abstract
This application discloses a sequence generating method and apparatus, and relates to the field of communications technologies, to resolve a problem that a PAPR of a DMRS symbol is higher than that of a data symbol. An initialization factor of a first sequence is obtained, where the initialization factor is associated with a first parameter; and the first sequence is generated based on the initialization factor. In addition, the first parameter is a port number, or the first parameter is a code division multiplexing CDM group identity.
Claims13
A sequence generating method, comprising:
- determining an initialization factor, cinit, of a sequence, wherein the initialization factor satisfies:
- c
- init
- =
- (
- 2
- 17
-
- (
- N
- symb
- slot
-
- n
- s
- ,
- f
- µ
- +
- 1
- +
- 1
- )
-
- (
- 2
-
- N
- ID
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- 1
- )
- +
- 2
-
- N
- ID
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- 2
- 17
-
- ⌊
- λ
- /
- 2
- ⌋
- )
-
- mod
-
- 2
- 31
- ,
- where Nsymbslot is a quantity of symbols in a slot, ns,fμ is an index of a subframe or a slot, l is an index of a symbol, nSCID is a scrambling factor NIDg(λ,nSCID) is a sequence scrambling identity, λ is a parameter with a value of one of 0, 1, or 2, and g(λ, nSCID) is a function that satisfies:
- g(λ,nSCID)=nSCID, when λ=0 or 2;
- or
- g(λ,nSCID)=1−nSCID, when λ=1
- generating a first reference signal the sequence based on the initialization factor;
- generating a first reference signal based on the sequence;
- and
- sending the first reference signal.
An apparatus, comprising:
- at least one processor, configured to:
- determine an initialization factor, cinit, of a sequence, wherein the initialization factor satisfies:
- c
- init
- =
- (
- 2
- 17
-
- (
- N
- symb
- slot
-
- n
- s
- ,
- f
- µ
- +
- 1
- +
- 1
- )
-
- (
- 2
-
- N
- ID
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- 1
- )
- +
- 2
-
- N
- ID
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- 2
- 17
-
- ⌊
- λ
- /
- 2
- ⌋
- )
-
- mod
-
- 2
- 31
- ,
- where Nsymbslot is a quantity of symbols in a slot, ns,fμ is an index of a subframe or a slot, l is an index of a symbol, nSCID is a scrambling factor NIDg(λ, nSCID) is a sequence scrambling identity, λ is a parameter with a value of one of 0, 1, or 2, and g(λ, nSCID) is a function that satisfies:
- g(λ,nSCID)=nSCID, when λ=0 or 2;
- or
- g(λ,nSCID)=1−nSCID, when λ=1
- generate the sequence based on the initialization factor;
- generate a first reference signal based on the sequence;
- and
- cause a transmitter to send the first reference signal.
A communications system, comprising a transmit end and a receive end, wherein the transmit end is configured to perform operations comprising:
- determining an initialization factor, cinit, of a sequence, wherein the initialization factor satisfies:
- c
- init
- =
- (
- 2
- 17
-
- (
- N
- symb
- slot
-
- n
- s
- ,
- f
- µ
- +
- 1
- +
- 1
- )
-
- (
- 2
-
- N
- ID
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- 1
- )
- +
- 2
-
- N
- ID
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- 2
- 17
-
- ⌊
- λ
- /
- 2
- ⌋
- )
-
- mod
-
- 2
- 31
- ,
- where Nsymbslot is a quantity of symbols in a slot, ns,fμ is an index of a subframe or a slot, l is an index of a symbol, nSCID is a scrambling factor NIDg(λ, nSCID) is a sequence scrambling identity, λ is a parameter with a value of one of 0, 1, or 2, and g(λ, nSCID) is a function that satisfies:
- g(λ,nSCID)=nSCID, when λ=0 or 2;
- or
- g(λ,nSCID)=1−nSCID, when λ=1;
- generating the sequence based on the initialization factor;
- generating a first reference signal based on the sequence;
- and
- sending the first reference signal.
A signal processing apparatus, comprising:
- at least one processor and a memory coupled to the at least one processor and storing programming instructions for execution by the at least one processor to perform operations comprising:
- determining an initialization factor, cinit, of a sequence, wherein the initialization factor satisfies:
- c
- init
- =
- (
- 2
- 17
-
- (
- N
- symb
- slot
-
- n
- s
- ,
- f
- µ
- +
- 1
- +
- 1
- )
-
- (
- 2
-
- N
- ID
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- 1
- )
- +
- 2
-
- N
- ID
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- 2
- 17
-
- ⌊
- λ
- /
- 2
- ⌋
- )
-
- mod
-
- 2
- 31
- ,
- where Nsymbslot is a quantity of symbols in a slot, ns,fμ is an index of a subframe or a slot, l is an index of a symbol, nSCID is a scrambling factor NIDg(λ, nSCID) is a sequence scrambling identity, λ is a parameter with a value of one of 0, 1, or 2, and g(λ, nSCID) is a function that satisfies:
- g(λ,nSCID)=nSCID, when λ=0 or 2;
- or
- g(λ,nSCID)=1−nSCID, when λ=1;
- generating the sequence based on the initialization factor;
- generating a first reference signal based on the sequence;
- and
- sending the first reference signal.
A non-transitory, computer-readable storage medium, storing a computer program executable by at least one processor to perform operations comprising:
- determining an initialization factor, cinit, of a sequence, wherein the initialization factor satisfies:
- c
- init
- =
- (
- 2
- 17
-
- (
- N
- symb
- slot
-
- n
- s
- ,
- f
- µ
- +
- 1
- +
- 1
- )
-
- (
- 2
-
- N
- ID
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- 1
- )
- +
- 2
-
- N
- ID
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- g
-
- (
- λ
- ,
- n
- SCID
- )
- +
- 2
- 17
-
- ⌊
- λ
- /
- 2
- ⌋
- )
-
- mod
-
- 2
- 31
- ,
- where Nsymbslot is a quantity of symbols in a slot, ns,fμ is an index of a subframe or a slot, l is an index of a symbol, nSCID is a scrambling factor NIDg(λ, nSCID) is a sequence scrambling identity, λ is a parameter with a value of one of 0, 1, or 2, and g(λ, nSCID) is a function that satisfies:
- g(λ,nSCID)=nSCID, when λ=0 or 2;
- or
- g(λ,nSCID)=1−nSCID, when λ=1;
- generating the sequence based on the initialization factor;
- generating a first reference signal based on the sequence;
- and
- sending the first reference signal.
Dependencies are inferred from the claim text.