WO2017049639A1 - 随机接入序列的产生方法、设备及系统 - Google Patents
随机接入序列的产生方法、设备及系统 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 72
- 230000011664 signaling Effects 0.000 claims abstract description 50
- 125000004122 cyclic group Chemical group 0.000 claims description 374
- 238000001514 detection method Methods 0.000 claims description 23
- 230000000875 corresponding effect Effects 0.000 description 44
- 238000010586 diagram Methods 0.000 description 31
- 230000000694 effects Effects 0.000 description 10
- 230000002596 correlated effect Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2681—Details of algorithms characterised by constraints
- H04L27/2688—Resistance to perturbation, e.g. noise, interference or fading
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
- H04L27/2692—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with preamble design, i.e. with negotiation of the synchronisation sequence with transmitter or sequence linked to the algorithm used at the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0016—Time-frequency-code
- H04L5/0021—Time-frequency-code in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
Definitions
- the embodiments of the present invention relate to communication technologies, and in particular, to a method, device, and system for generating a random access sequence.
- the user equipment (UE, User Equipment) communicates with the base station in the case of high-speed mobility, and the signal frequency of the UE and the base station receiving end changes, which is called Doppler frequency shift.
- sequence shifting is performed to determine three parameters of the number of groups, the number of sequence shifts of UE candidates within a group, and the number of sequence shifts of UE candidates within the length of the last one group, and The shift number is selected in the interval determined by these three parameters.
- Embodiments of the present invention provide a method, device, and system for generating a random access sequence.
- an embodiment of the present invention provides a method for generating a random access sequence, including:
- the base station generates the notification signaling;
- the notification signaling includes indication information, where the indication information is used to indicate that the user equipment UE is Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- the base station sends the notification signaling to the UE, so that the UE generates a random access sequence according to the indication information.
- the method further includes:
- the base station is Select the shift sequence number within the range
- the base station acquires a cyclic shift value according to the shift sequence number
- the base station generates a detection sequence according to the cyclic shift value, and uses the detection sequence to detect a random access sequence sent by the UE, where the random access sequence is generated by the UE according to the indication information.
- the acquiring, by the base station, the cyclic shift value according to the shift sequence number includes:
- the base station acquires the cyclic shift value C v according to the shift sequence number v by using the following formula (1), formula (2) or formula (3):
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a set of intra-UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, A cyclic shift value of the sequence shift of the first UE candidate in the second remaining sequence shift.
- the base station obtains the cyclic shift value C v by using formula (1);
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- an embodiment of the present invention provides a method for generating a random access sequence, including:
- the user equipment UE receives the notification signaling from the base station, where the notification signaling includes indication information, where the indication information is used to indicate that the UE is Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- the UE is in accordance with the notification signaling Select the shift sequence number within the range;
- the UE acquires a cyclic shift value according to the shift sequence number
- the UE generates a random access sequence according to the cyclic shift value.
- the acquiring, by the UE, the cyclic shift value according to the shift sequence number includes:
- the UE acquires the cyclic shift value C v according to the shift sequence number v by using the following formula (1), formula (2) or formula (3):
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a group of UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, A cyclic shift value of the sequence shift of the first UE candidate in the second remaining sequence shift.
- the UE acquires the cyclic shift value Cv by using formula (1);
- the UE acquires the cyclic shift value C v by using formula (2);
- the UE acquires the cyclic shift value C v using Equation (3).
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- the UE In combination with the second aspect or the first to seventh aspects of the second aspect, in an eighth possible implementation manner of the second aspect, the UE generates a random access sequence according to the cyclic shift value, including:
- the UE generates a random access sequence according to the cyclic shift value C v by using the following formula (36)
- N ZC is the sequence length and the ZC sequence whose root is u is defined as:
- an embodiment of the present invention provides a method for generating a random access sequence, including:
- v is an integer
- the number of sequence shifts for a set of user equipment UE candidates For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- the base station acquires the cyclic shift value C v according to the shift sequence number v by using the following formula (1), formula (2) or formula (3):
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a set of intra-UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, a cyclic shift value of a sequence shift of the first UE candidate in the second remaining sequence shift;
- N ZC is a sequence length
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times the PRACH subcarrier interval.
- the base station obtains the cyclic shift value C v by using formula (1);
- an embodiment of the present invention provides a method for generating a random access sequence, including:
- User equipment UE is at Select the shift number v in the range, where v is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- the UE acquires the cyclic shift value C v according to the shift sequence number v by using the following formula (1), formula (2) or formula (3):
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a set of intra-UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, a cyclic shift value of a sequence shift of the first UE candidate in the second remaining sequence shift;
- the UE generates a random access sequence according to the cyclic shift value C v by using the following formula (36).
- N ZC is the sequence length and the ZC sequence whose root is u is defined as:
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- the UE acquires the cyclic shift value C v by using formula (1);
- the UE acquires the cyclic shift value C v by using formula (2);
- the UE acquires the cyclic shift value C v using Equation (3).
- an embodiment of the present invention provides a base station, including:
- a generating module configured to generate notification signaling, where the notification signaling includes indication information, where the indication information is used to indicate that the user equipment UE is Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- a sending module configured to send the notification signaling to the UE, to enable the UE to generate a random access sequence according to the indication information.
- the base station further includes:
- Shift sequence number determination module for Select the shift sequence number within the range
- a cyclic shift value determining module configured to acquire a cyclic shift value according to the shift sequence number
- a random access sequence detecting module configured to generate a detection sequence according to the cyclic shift value, and use the detection sequence to detect a random access sequence sent by the UE, where the random access sequence is the UE according to the The indication information is generated.
- the cyclic shift value determining module is specifically configured to:
- the cyclic shift value C v is obtained by using the following formula (1), formula (2) or formula (3):
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a set of intra-UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, A cyclic shift value of the sequence shift of the first UE candidate in the second remaining sequence shift.
- the cyclic shift value determining module obtains the cyclic shift value C v by using formula (1);
- the cyclic shift value determining module acquires the cyclic shift value C v using equation (3).
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- an embodiment of the present invention provides a user equipment UE, including:
- a receiving module configured to receive notification signaling from a base station, where the notification signaling includes indication information, where the indication information is used to indicate that the UE is Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- a shift sequence number determining module configured to Select the shift sequence number within the range
- a cyclic shift value determining module configured to acquire a cyclic shift value according to the shift sequence number
- a random access sequence generating module configured to generate a random access sequence according to the cyclic shift value.
- the cyclic shift value determining module is specifically configured to:
- the cyclic shift value C v is obtained by using the following formula (1), formula (2) or formula (3):
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a set of intra-UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, A cyclic shift value of the sequence shift of the first UE candidate in the second remaining sequence shift.
- the cyclic shift value determining module obtains the cyclic shift value C v by using formula (1);
- the cyclic shift value determining module acquires the cyclic shift value C v using equation (3).
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- the random access sequence generating module is specifically used to :
- a random access sequence is generated by the following formula (36)
- N ZC is the sequence length and the ZC sequence whose root is u is defined as:
- an embodiment of the present invention provides a base station, including:
- Shift sequence number determination module for Select the shift number v in the range, where v is an integer, The number of sequence shifts for a set of user equipment UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- the cyclic shift value determining module is configured to obtain the cyclic shift value C v according to the shift sequence number v by using the following formula (1), formula (2) or formula (3):
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a group of UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, a cyclic shift value of a sequence shift of the first UE candidate in the second remaining sequence shift;
- N ZC is a sequence length
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times the PRACH subcarrier interval.
- the cyclic shift value determining module obtains the cyclic shift value C v by using formula (1);
- the cyclic shift value determining module acquires the cyclic shift value C v using equation (3).
- the eighth aspect of the present invention provides a user equipment UE, including:
- Shift sequence number determination module for Select the shift number v in the range, where v is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- the cyclic shift value determining module is configured to obtain the cyclic shift value C v according to the shift sequence number v by using the following formula (1), formula (2) or formula (3):
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a set of intra-UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, a cyclic shift value of a sequence shift of the first UE candidate in the second remaining sequence shift;
- a random access sequence generating module configured to generate a random access sequence according to the cyclic shift value C v by using the following formula (36)
- N ZC is the sequence length and the ZC sequence whose root is u is defined as:
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- the cyclic shift value determining module obtains the cyclic shift value C v by using formula (1);
- the cyclic shift value determining module acquires the cyclic shift value C v using equation (3).
- the ninth aspect provides a system for generating a random access sequence, comprising: the base station according to any one of the first to eighth aspects of the fifth aspect or the fifth aspect, and the sixth aspect or the The user equipment UE according to any one of the first to eighth aspects of the sixth aspect.
- the embodiment of the present invention provides a system for generating a random access sequence, comprising: the base station according to any one of the first to second aspects of the seventh aspect or the seventh aspect, and the eighth aspect or the The user equipment UE of any one of the first to the second of the eight aspects.
- a method, device, and system for generating a random access sequence includes: generating, by a base station, notification signaling; the notification signaling includes indication information, where the indication information is used to indicate User equipment UE is at Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, And the number of sequence shifts of the UE candidate in the second remaining sequence shift; the base station sends the notification signaling to the UE, so that the UE generates a random access sequence according to the indication information.
- Embodiment 1 is a flowchart of Embodiment 1 of a method for generating a random access sequence according to the present invention
- Embodiment 2 is a flowchart of Embodiment 2 of a method for generating a random access sequence according to the present invention
- FIG. 3 is a schematic diagram of a scenario according to an embodiment of the present invention.
- FIG. 4 is a schematic diagram of a second scenario according to an embodiment of the present invention.
- FIG. 5 is a schematic diagram of a scenario 3 according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of a scenario 4 according to an embodiment of the present invention.
- FIG. 7 is a schematic diagram of a scenario 5 according to an embodiment of the present invention.
- FIG. 8 is a schematic diagram of a scenario 6 according to an embodiment of the present invention.
- FIG. 9 is a schematic diagram of a scenario 7 according to an embodiment of the present invention.
- Embodiment 10 is a flowchart of Embodiment 3 of a method for generating a random access sequence according to the present invention
- FIG. 11 is a flowchart of Embodiment 5 of a method for generating a random access sequence according to the present invention.
- Embodiment 12 is a flowchart of Embodiment 6 of a method for generating a random access sequence according to the present invention
- Embodiment 13 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
- Embodiment 2 of a base station is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
- Embodiment 15 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention.
- FIG. 16 is a schematic structural diagram of Embodiment 3 of a base station according to the present invention.
- FIG. 17 is a schematic structural diagram of Embodiment 3 of a user equipment according to the present invention.
- Embodiment 4 of a base station is a schematic structural diagram of Embodiment 4 of a base station according to the present invention.
- Embodiment 4 of a user equipment is a schematic structural diagram of Embodiment 4 of a user equipment according to the present invention.
- FIG. 20 is a schematic structural diagram of Embodiment 5 of a base station according to the present invention.
- Embodiment 1 is a flowchart of Embodiment 1 of a method for generating a random access sequence according to the present invention; as shown in FIG.
- the method of this embodiment may include:
- Step 101 The base station generates notification signaling, where the notification signaling includes indication information, where the indication information is used to indicate that the user equipment UE is Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- the “group” in the present invention is a grouping of sequence shifts. Indicates the number of groups obtained after grouping the sequence shifts; Representing the number of UEs that can be distinguished within a group of sequence shifts after grouping the sequence shifts; Representing the number of UEs that are further distinguished by the sequence shift within the length of the remaining dissatisfied group after the sequence shift is divided into groups; and Represents all sequence shifts, except The number of UEs that can be distinguished in the remaining discrete sequence shifts, in addition to the determined sequence shift.
- Step 102 The base station sends the notification signaling to the UE, so that the UE generates a random access sequence according to the indication information.
- the UE is Select the shift number within the range.
- the base station indicates in the notification signaling that the UE is in the Select the shift number within the range.
- shift sequences are grouped to determine the number of groups. Number of sequence shifts for a set of intra UE candidates And the number of sequence shifts of UE candidates within the length of the last dissatisfied group Three parameters, and the shift number is selected in the interval determined by the three parameters; it can be seen that in the prior art, when determining the range of the shift number selection, only how many UEs can be distinguished from the perspective of the group, and Other discrete shift sequences remaining after grouping are not considered.
- the number of further distinguishable UEs in other discrete shift sequences remaining after the packet is also considered, that is, the UE in the first remaining sequence shift Number of candidate sequence shifts And the number of sequence shifts of UE candidates in the second remaining sequence shift And indicating in the notification signaling that the UE is The shift sequence number is selected within the range; thereby increasing the selection range of the shift sequence number.
- Embodiment 2 is a flowchart of Embodiment 2 of a method for generating a random access sequence according to the present invention; as shown in FIG. 2,
- the method may further include:
- Step 201 the base station is at Select the shift sequence number within the range
- the base station since the base station cannot know the shift sequence number used by the UE when sending the random access sequence, when detecting the random access sequence sent by the UE, the base station is Selecting to traverse each shift sequence in sequence; or, the base station sequentially selects and traverses each shift sequence in a range of 0 to X, where X is less than The integer.
- Step 202 The base station acquires a cyclic shift value according to the shift sequence number.
- the base station acquires the cyclic shift value Cv of the UE by using the following formula (1), formula (2), or formula (3) according to the shift sequence number v :
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a set of intra-UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, A cyclic shift value of the sequence shift of the first UE candidate in the second remaining sequence shift.
- the base station obtains the cyclic shift value C v by using formula (1);
- Step 203 The base station generates a detection sequence according to the cyclic shift value, and uses the detection.
- the sequence detects a random access sequence sent by the UE, where the random access sequence is generated by the UE according to the indication information.
- the ZC sequence x u (n) whose root is u can be defined as: Where N ZC is the length of the ZC sequence and u is the root of the ZC sequence.
- the base station cyclically shifts the ZC sequence x u (n) whose root is u. If the cyclic shift value is K, the ZC sequence generated according to the cyclic shift value is x u ((n+ K) mod N ZC ), where N ZC is the ZC sequence length.
- the base station uses the cyclic shift value generation detection sequence to perform correlation detection on the random access sequence sent by the UE.
- the correlation detection may be performed in the time domain, or may be performed in the frequency domain according to the frequency domain detection mode corresponding to the time domain correlation detection mode.
- step 202 d start , Satisfy formula (4) ⁇ (11):
- step 202 d start , Satisfy formula (12) ⁇ (19):
- step 202 d start , Satisfy formula (20) ⁇ (27):
- step 202 d start , Satisfy formula (28) ⁇ (35):
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times of the PRACH subcarrier interval.
- the base station is Selecting a shift sequence number in the range; the base station acquiring a cyclic shift value according to the shift sequence number; the base station generating a detection sequence according to the cyclic shift value, and using the detection sequence to send the random connection to the UE
- the in-sequence detection is performed, and the random access sequence is generated by the UE according to the indication information; and when the PRACH sub-carrier spacing with the Doppler frequency shift greater than 1 times is less than 2 times, the PRACH sub-carrier spacing is solved.
- the problem of mutual interference between the UE random access sequences avoids mutual interference between multiple UE random access sequences, and improves the accuracy of the base station decoding random access sequences.
- the signal transmitted by the UE is r(t)e j2 ⁇ ft , where r(t) is the baseband signal and e j2 ⁇ ft is the carrier frequency, then the signal obtained by the Doppler shift of m ⁇ f is r(t)e j2 ⁇ (f+ m ⁇ f)t , where m is a positive integer and ⁇ f is 1 times the PRACH subcarrier spacing;
- IFFT Inverse Fast Fourier Transform
- ⁇ f the subcarrier spacing
- ⁇ t the time domain sampling interval
- N the size of Discrete Fourier Transformation (DFT) or Inverse Discrete Fourier Transform (IDFT).
- DFT Discrete Fourier Transformation
- IDFT Inverse Discrete Fourier Transform
- the UE sends a random access sequence to the base station. If there is a Doppler shift of ⁇ m ⁇ f between the UE and the base station receiving end, the random access sequence received by the receiving end of the base station is a shift sequence of the random access sequence sent by the UE. And there is a fixed phase offset between the two sequences.
- x u (n) represents the ZC sequence whose root is u
- ie x u (n+m(1/u)) represents a shift sequence of the ZC sequence whose root is u, that is, the ZC sequence whose root is u is cyclically shifted to the right by m (1/u) bits.
- the random access sequence received by the base station is or
- the random access sequence received by the base station in the time domain is the shift sequence of the random access sequence transmitted by the UE. And there is a fixed phase offset between the two sequences (not related to n).
- the +m ⁇ f Doppler shift, the random access sequence received by the base station in the time domain is also the shift sequence of the random access sequence sent by the UE, and details are not described herein again.
- the base station receiver uses the sequence x u (n), or A peak occurs when correlated with a random access sequence transmitted by the UE.
- the base station receiver uses the sequence x u (n), or A peak occurs when correlated with a random access sequence transmitted by the UE.
- the base station receiver uses the sequence x u (n), or A peak may occur when correlated with a random access sequence transmitted by the UE.
- d start The purpose of satisfying the formulas (4) to (11), or the formulas (12) to (19), or the formulas (20) to (27), or the equations (28) to (35) is to avoid the base station receiving end being larger than
- d u is a cyclic shift corresponding to the random access sequence when the Doppler frequency is 1 times the PRACH subcarrier interval.
- N CS represents the number of cyclic shifts occupied by a user, for example, the sequence length is N ZC , and one user accounts for N CS shifts.
- a group can distinguish Users, from the UE side, one UE has up to one group Sequence shifts are available for selection.
- ZC -1 For example, if the ZC sequence whose root is u is denoted as x u (n), when the cyclic shift value is 0, the generated sequence is x u (n), and when the cyclic shift value is 1. The sequence it generates is x u (n+1).
- the first user equipment sends a random access sequence to the base station by using the first cyclic shift value when the PRACH subcarrier spacing is less than 2 times the PRACH subcarrier spacing, and the base station uses 5 cycles.
- the sequence corresponding to the shift value detects the random access sequence sent by the first user equipment, a peak may occur, and the difference between the cyclic shift value and the first cyclic shift value is 0, d u , -d u , 2d u , -2d u .
- the candidate sequence shifts corresponding to the five cyclic shift values cannot be allocated to other user equipments, and for the base station side, this is equivalent to 5
- the candidate sequence shift corresponding to the cyclic shift value is allocated to the first user equipment, that is, as shown in FIG. 3, the sequence shift associated with "1" (ie, 1 0 , 1 +1 , 1 +2 , 1 -1 , 1 +2 occupied sequence shift), as the candidate sequence shift of the same group of UEs, sequence shift associated with "2" (ie, 2 0 , 2 +1 , 2 + 2 , 2 -1 , 2 + 2 occupied by the sequence shift) as the candidate sequence shift of the same group of UEs.
- the first UE UE the starting sequence 10 occupied by the shift of the shift for the first UE, a first cyclic shift value set in the UE. 1; the first for the UE group 2 a UE, the starting sequence 20 occupied by the shift of the shift to the cyclic shift value of the first UE, the UE 2 group.
- the cyclic shift distance between adjacent groups and groups is shown; as shown in the portion in Fig. 3 in which the filling pattern is a lattice pattern.
- a cyclic shift value representing a sequence shift of the first UE candidate in the first remaining sequence shift as indicated by arrow X in FIG.
- a cyclic shift value representing a sequence shift of the first UE candidate in the second remaining sequence shift as indicated by arrow Y in FIG.
- the portion of the pad pattern in FIG. 3 that is the origin pattern is to synchronously represent one of the five shift sequences occupied by a group, so as to more easily explain how to allocate each group.
- N N ZC and satisfied (or ), as shown in FIG. 4, the sequence occupied by 10 , 1 +1 , 1 + 2 , 1 -1 , 1 + 2 is shifted as the first group, and 2 0 , 2 +1 , 2 + 2 , Sequence shifts occupied by 2 -1 and 2 +2 as the second group; number of sequence shifts of a group of inner UE candidates Where N CS represents the number of cyclic shifts occupied by a user.
- d start is as shown in the part in FIG. 4 in which the filling pattern is a lattice pattern, As shown in the figure in Figure 4, the fill pattern is the left diagonal stripe. As indicated by the arrow X in FIG.
- the portion of the pad pattern in FIG. 4 that is the origin pattern is to synchronously represent one of the five shift sequences occupied by a group, so as to explain how to assign each group more easily.
- d start is as shown in the part of FIG. 5 in which the filling pattern is a lattice pattern, As shown in the figure in Figure 5, the fill pattern is the left diagonal stripe. As indicated by the arrow X in FIG.
- Figure 5 Can be 1, that is, the fill pattern is the character A (can correspond to 0), B (can correspond to +d u ), C (can correspond to +2d u ), D (can correspond to -d u ), E (can correspond to -2d) u )
- the corresponding 5 candidate sequence shifts are allocated to a UE as a new candidate sequence shift.
- the portion of the pad pattern in FIG. 5 that is the origin pattern is to synchronously represent one of the five shift sequences occupied by a group, so as to explain how to assign each group more easily.
- the cyclic shift distance between adjacent groups and groups is shown; as shown in the portion in Fig. 6 in which the filling pattern is a lattice pattern.
- the number of sequence shifts of UE candidates within the length of the last dissatisfied group may be 1, that is, the pad pattern is shifted by five candidate sequences corresponding to characters A, B, C, D, and E.
- the shift is assigned to a UE as a new candidate sequence.
- the number of sequence shifts indicating UE candidates in the second remaining sequence shift is zero.
- a cyclic shift value representing a sequence shift of the first UE candidate in the first remaining sequence shift as indicated by arrow X in FIG.
- the portion of the filling pattern as the origin pattern is for synchronously representing one of the five shift sequences occupied by a group
- the portion of the filling pattern is a vertical strip pattern for synchronously indicating that the filling pattern is a character. The sequence shifts to make it easier to explain how to assign each group.
- d start is as shown in the part in FIG. 7 in which the filling pattern is a lattice pattern, As shown in the figure in Figure 7, the fill pattern is the left diagonal stripe. As indicated by the arrow X in FIG.
- the portion of the padding pattern in FIG. 7 that is the origin pattern is to synchronously represent one of the five shift sequences occupied by a group, so as to explain how to assign the groups more easily.
- the cyclic shift distance between adjacent groups and groups is shown; as shown in the portion in Fig. 8 where the fill pattern is a lattice pattern.
- the number of sequence shifts of UE candidates within the length of the last dissatisfied group may be 1, that is, the pad pattern is shifted by five candidate sequences corresponding to characters A, B, C, D, and E.
- the shift is assigned to a UE as a new candidate sequence.
- the number of sequence shifts indicating UE candidates in the first remaining sequence shift is zero.
- the number of sequence shifts indicating UE candidates in the second remaining sequence shift is zero.
- the cyclic shift distance between adjacent groups and groups is shown; as shown in the portion in Fig. 9 where the filling pattern is a lattice pattern.
- the number of sequence shifts of UE candidates within the length of the last dissatisfied group may be 1, that is, the pad pattern is shifted by five candidate sequences corresponding to characters A, B, C, D, and E.
- the shift is assigned to a UE as a new candidate sequence.
- the number of sequence shifts indicating UE candidates in the first remaining sequence shift is zero.
- the number of sequence shifts indicating UE candidates in the second remaining sequence shift is zero.
- FIG. 10 is a flowchart of Embodiment 3 of a method for generating a random access sequence according to the present invention. As shown in FIG. 10, the method in this embodiment may include:
- Step 1001 The UE receives the notification signaling from the base station, where the notification signaling includes indication information, where the indication information is used to indicate that the UE is Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- Step 1002 The UE selects a shift sequence number according to the notification signaling.
- the UE is in accordance with the notification signaling. Select the shift number within the range.
- Step 1003 The UE acquires a cyclic shift value according to the shift sequence number.
- Step 1004 The UE generates a random access sequence according to the cyclic shift value.
- the UE is in accordance with the notification signaling according to the Selecting the shift sequence number within the range, so that after considering how many UEs can be distinguished from the perspective of the group, the number of further distinguishable UEs in other discrete shift sequences remaining after the packet is also considered, and the shift is increased.
- the selection range of the bit number is also considered.
- the step 1003 may specifically include:
- the UE acquires the cyclic shift value C v according to the shift sequence number v by using formula (1), formula (2) or formula (3).
- the UE acquires the cyclic shift value C v by using formula (1);
- the UE acquires the cyclic shift value C v by using formula (2);
- the UE acquires the cyclic shift value C v using Equation (3).
- step 1004 may specifically include:
- the UE generates a random access sequence according to the cyclic shift value C v by using the following formula (36)
- N ZC is the sequence length and the ZC sequence whose root is u is defined as:
- FIG. 11 is a flowchart of Embodiment 5 of a method for generating a random access sequence according to the present invention. As shown in FIG. 11, the method in this embodiment may include:
- Step 1101 The base station selects a shift sequence number.
- the base station is Select the shift number v in the range, where v is an integer, The number of sequence shifts for a set of user equipment UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- Step 1102 The base station acquires a cyclic shift value according to the shift sequence number.
- the base station obtains the cyclic shift value C v according to the shift sequence number v by using the following formula (1), formula (2) or formula (3):
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a set of intra-UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, a cyclic shift value of a sequence shift of the first UE candidate in the second remaining sequence shift;
- the base station obtains the cyclic shift value C v by using formula (1);
- FIG. 12 is a flowchart of Embodiment 6 of a method for generating a random access sequence according to the present invention. As shown in FIG. 12, the method in this embodiment may include:
- Step 1201 The UE selects a shift sequence number.
- the UE is Select the shift sequence number v within the range
- v is an integer
- the number of sequence shifts for a set of intra-UE candidates For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift.
- Step 1202 The UE acquires a cyclic shift value according to the shift sequence number.
- the UE acquires the cyclic shift value C v according to the shift sequence number v by using the following formula (1), formula (2) or formula (3):
- d offset is the shift offset
- d start is the cyclic shift distance between adjacent groups.
- the number of sequence shifts for a set of intra-UE candidates, N CS is the number of cyclic shifts occupied by a user, a cyclic shift value of a sequence shift of the first UE candidate in the first remaining sequence shift, A cyclic shift value of the sequence shift of the first UE candidate in the second remaining sequence shift.
- Step 1203 The UE generates a random access sequence according to the cyclic shift value.
- the UE generates a random access sequence according to the cyclic shift value C v by using the following formula (36).
- N ZC is the sequence length and the ZC sequence whose root is u is defined as:
- the base station obtains the cyclic shift value C v by using formula (1);
- FIG. 13 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
- the base station in this embodiment may include: a generating module 1301 and a sending module 1302.
- the generating module 1301 is configured to generate notification signaling, where the notification signaling includes indication information, where the indication information is used to indicate that the user equipment UE is Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of the UE candidate in the second remaining sequence shift; the sending module 1302 is configured to send the notification signaling to the UE, so that the UE generates a random access sequence according to the indication information.
- the base station in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 1 , and the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 14 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
- the base station in this embodiment may further include: a sequence number determining module 1303, and a loop, based on the structure of the base station shown in FIG.
- the shift sequence number determining module 1303 is configured to be used in Selecting a shift sequence number in the range; a cyclic shift value determining module 1304, configured to acquire a cyclic shift value according to the shift sequence number; and a random access sequence detecting module 1305, configured to generate a detection sequence according to the cyclic shift value And detecting, by using the detection sequence, a random access sequence sent by the UE, where the random access sequence is generated by the UE according to the indication information.
- the cyclic shift value determining module 1304 is specifically configured to:
- the cyclic shift value C v is obtained by using the formula (1), the formula (2), or the formula (3).
- the cyclic shift value determining module 1304 obtains the cyclic shift value C v using the formula (1);
- the cyclic shift value determining module 1304 obtains the cyclic shift value C v using the formula (2);
- the cyclic shift value determining module 1304 acquires the cyclic shift value C v using the formula (3).
- said d start Satisfy the formula (4) to (11); or,
- the base station of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 15 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention.
- the user equipment in this embodiment may include: a receiving module 1501, a shift sequence number determining module 1502, a cyclic shift value determining module 1503, and a random connection.
- the sequence generation module 1504 is entered.
- the receiving module 1501 is configured to receive the notification signaling from the base station, where the notification signaling includes indication information, where the indication information is used to indicate that the UE is Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, a number of sequence shifts of UE candidates in the second remaining sequence shift; a shift sequence number determining module 1502, configured to a cyclic shift value determining module 1503, configured to acquire a cyclic shift value according to the shift sequence number; a random access sequence generating module 1504, configured to generate a random connection according to the cyclic shift value Into the sequence.
- the notification signaling includes indication information, where the indication information is used to indicate that the UE is Selecting a shift sequence number within a range; wherein the shift sequence number
- the UE of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG.
- the present principle and technical effects are similar and will not be described here.
- the cyclic shift value determining module 1503 is specifically configured to:
- the cyclic shift value C v is obtained by using the formula (1), the formula (2), or the formula (3).
- the cyclic shift value determining module 1503 obtains the cyclic shift value C v by using formula (1);
- the cyclic shift value determining module 1503 acquires the cyclic shift value C v using the formula (3).
- said d start Satisfy the formula (4) to (11); or,
- the random access sequence generating module 1504 is specifically configured to:
- a random access sequence is generated by the following formula (36)
- N ZC is the sequence length and the ZC sequence whose root is u is defined as:
- the UE in this embodiment may be used to implement the technical solution in the fourth embodiment of the method for generating a random access sequence, and the implementation principle and technical effects are similar, and details are not described herein again.
- the present invention further provides a system for generating a random access series, including the base station according to the first embodiment or the second embodiment of the base station, and the user equipment according to the first or second embodiment of the user equipment.
- FIG. 16 is a schematic structural diagram of Embodiment 3 of a base station according to the present invention.
- the base station in this embodiment may include: a shift sequence number determining module 1601 and a cyclic shift value determining module 1602.
- the shift sequence number determining module 1601 is configured to Select the shift number v in the range, where v is an integer, The number of sequence shifts for a set of user equipment UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- the cyclic shift value determining module 1602 is configured to obtain the cyclic shift value C v according to the shift sequence number v by using formula (1), formula (2) or formula (3);
- the cyclic shift value determining module 1602 obtains the cyclic shift value C v using the formula (1);
- the cyclic shift value determining module 1602 acquires the cyclic shift value C v using the formula (3).
- the base station of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 11.
- the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 17 is a schematic structural diagram of Embodiment 3 of a user equipment according to the present invention.
- the base station in this embodiment may include: a shift sequence number determining module 1701, a cyclic shift value determining module 1702, and a random access sequence generating module 1703. .
- the shift sequence number determining module 1701 is configured to Select the shift number v in the range, where v is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of the UE candidate in the second remaining sequence shift;
- the cyclic shift value determining module 1702 is configured to obtain the formula (1), the formula (2), or the formula (3) according to the shift sequence number v. a cyclic shift value C v ;
- a random access sequence generating module 1703 configured to generate a random access sequence by using equation (36) according to the cyclic shift value C v
- the cyclic shift value determining module 1702 obtains the cyclic shift value C v using the formula (1);
- the cyclic shift value determining module 1702 obtains the cyclic shift value C v using the formula (2);
- the cyclic shift value determining module 1702 acquires the cyclic shift value C v using the formula (3).
- the user equipment in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 12, and the implementation principle and technical effects are similar, and details are not described herein again.
- the present invention further provides a system for generating a random access series, including the base station according to the third embodiment of the base station, and the user equipment according to the third embodiment of the user equipment.
- FIG. 18 is a schematic structural diagram of Embodiment 4 of a base station according to the present invention.
- the base station in this embodiment may include: a processor 1801 and a transmitter 1802.
- the processor 1801 is configured to generate notification signaling, where the notification signaling includes indication information, where the indication information is used to indicate that the user equipment UE is Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of the UE candidate in the second remaining sequence shift; the transmitter 1802 is configured to send the notification signaling to the UE, so that the UE generates a random access sequence according to the indication information.
- processor 1802 is further configured to:
- the processor 1802 acquires a cyclic shift value according to the shift sequence number, and specifically includes:
- the cyclic shift value C v is obtained by using the formula (1), the formula (2), or the formula (3).
- the processor 1802 acquires the cyclic shift value C v using Equation (3).
- said d start Satisfy the formula (4) to (11); or,
- the base station of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 1 or FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 19 is a schematic structural diagram of Embodiment 4 of a user equipment according to the present invention.
- the user equipment in this embodiment may include: a receiver 1901 and a processor 1902.
- the receiver 1901 is configured to receive notification signaling from a base station, where the notification signaling includes indication information, where the indication information is used to indicate that the UE is Selecting a shift sequence number within a range; wherein the shift sequence number is an integer, The number of sequence shifts for a set of intra-UE candidates, For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, a number of sequence shifts of UE candidates in the second remaining sequence shift; processor 1902, configured to Selecting a shift sequence number within a range; acquiring a cyclic shift value according to the shift sequence number; generating a random access sequence according to the cyclic shift value.
- the processor 1902 acquires a cyclic shift value according to the shift sequence number, and specifically includes:
- the cyclic shift value C v is obtained by using the formula (1), the formula (2), or the formula (3).
- the processor 1902 obtains the cyclic shift value C v using the formula (1);
- the processor 1902 acquires the cyclic shift value C v using the formula (3).
- said d start Satisfy the formula (4) to (11); or,
- the processor 1902 generates a random access sequence according to the cyclic shift value, and specifically includes:
- a random access sequence is generated by the following formula (36)
- N ZC is the sequence length and the ZC sequence whose root is u is defined as:
- the UE in this embodiment may be used to implement the technical solution of the third embodiment or the fourth embodiment of the method for generating a random access sequence, and the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 20 is a schematic structural diagram of Embodiment 5 of a base station according to the present invention.
- the base station in this embodiment may include: a processor 2001 and a memory 2002.
- the apparatus may also include a transmitter 2003, a receiver 2004. Transmitter 2003 and receiver 2004 can be coupled to processor 2001.
- the transmitter 2003 is used to transmit data or information
- the receiver 2004 is used to receive data or information
- the memory 2002 stores execution instructions, when the device is running
- the processor 2001 communicates with the memory 2002
- the processor 2001 calls the memory 2002. Execution instructions for performing the following operations:
- v is an integer
- the number of sequence shifts for a set of user equipment UE candidates For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- the processor 2001 acquires the cyclic shift value C v using the formula (3).
- the base station of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 11.
- the implementation principle and technical effects are similar, and details are not described herein again.
- the user equipment in this embodiment has the same structure as the base station shown in FIG. 20, and may also include: a processor and a memory.
- the device can also include a transmitter, a receiver. The transmitter and receiver can be connected to the processor. The transmitter is configured to transmit data or information, the receiver is configured to receive data or information, and the memory stores execution instructions. When the device is running, the processor communicates with the memory, and the processor calls the execution instruction in the memory to perform the following operations. :
- v is an integer
- the number of sequence shifts for a set of intra-UE candidates For the number of groups, The number of sequence shifts for UE candidates within the length of the last dissatisfaction group, The number of sequence shifts of UE candidates in the first remaining sequence shift, The number of sequence shifts of UE candidates in the second remaining sequence shift;
- the user equipment in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 12, and the implementation principle and technical effects are similar, and details are not described herein again.
- the steps can be completed by the relevant hardware of the program instructions.
- the aforementioned program can be stored in a computer readable storage medium.
- the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
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Abstract
本发明实施例提供一种随机接入序列的产生方法、设备及系统。一种随机接入序列的产生方法包括:基站生成通知信令;所述通知信令包括指示信息,所述指示信息用于指示用户设备UE在AA的范围内选择移位序号;其中,所述移位序号为整数,BB为一组内UE候选的序列移位的数目,CC为组的数目,DD为最后一个不满一个组的长度内UE候选的序列移位的数目,EE为第一剩余序列移位中UE候选的序列移位的数目,FF为第二剩余序列移位中UE候选的序列移位的数目;所述基站向所述UE发送所述通知信令,以使所述UE根据所述指示信息产生随机接入序列。
Description
本发明实施例涉及通信技术,尤其涉及一种随机接入序列的产生方法、设备及系统。
用户设备(UE,User Equipment)在高速移动的情况下与基站进行通信,UE和基站接收端的信号频率会发生变化,称为多普勒频移。
现有技术中,为了避免当多普勒频移大于1倍的物理随机接入信道(PRACH,Physical Random Access Channel)子载波间隔小于2倍的PRACH子载波间隔时,多个UE的随机接入序列之间相互干扰的问题,做了针对性的设计。现有技术中将序列移位进行分组,确定出组的数目、一组内UE候选的序列移位的数目以及最后一个不满一组的长度内UE候选的序列移位的数目三个参数,并在这三个参数所确定的区间中选择移位序号。
但是,现有技术中,存在移位序号选择范围过小的问题。
发明内容
本发明实施例提供一种随机接入序列的产生方法、设备及系统。
第一方面,本发明实施例提供一种随机接入序列的产生方法,包括:
基站生成通知信令;所述通知信令包括指示信息,所述指示信息用于指示用户设备UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
所述基站向所述UE发送所述通知信令,以使所述UE根据所述指示信息产生随机接入序列。
结合第一方面,在第一方面的第一种可能实现的方式中,所述基站向所述UE发送所述通知信令之后,还包括:
所述基站根据所述移位序号获取循环移位值;
所述基站根据所述循环移位值产生检测序列,使用所述检测序列对所述UE发送的随机接入序列进行检测,所述随机接入序列为所述UE根据所述指示信息产生。
结合第一方面的第一种可能实现的方式,在第一方面的第二种可能实现的方式中,所述基站根据所述移位序号获取循环移位值,包括:
所述基站根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值。
其中,公式(4)~(11)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(12)~(19)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(20)~(27)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(28)~(35)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
结合第一方面的第四种至第七种任一种可能实现的方式,在第一方面的第八种可能实现的方式中,当时,dstart、
满足公式(4)~(11),当时,dstart、满足公式(12)~(19);或者,当
时,dstart、满足公式(4)~(11),当时,dstart、
满足公式(12)~(19);
当时,dstart、满足公式(20)~(27),当时,dstart、
满足公式(28)~(35);或者,当时,dstart、满足公式(20)~(27),当时,dstart、满足公式(28)~(35)。
第二方面,本发明实施例提供一种随机接入序列的产生方法,包括:
用户设备UE接收来自基站的通知信令,所述通知信令包括指示信息,所述指示信息用于指示所述UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
所述UE根据所述移位序号获取循环移位值;
所述UE根据所述循环移位值产生随机接入序列。
结合第二方面,在第二方面的第一种可能实现的方式中,所述UE根据所述移位序号获取循环移位值,包括:
所述UE根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内
UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值。
其中,公式(4)~(11)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(12)~(19)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(20)~(27)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(28)~(35)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
结合第二方面的第三种至第六种任一种可能实现的方式,在第二方面的第七种可能实现的方式中,当时,dstart、
满足公式(4)~(11),当时,dstart、满足公式(12)~(19);或者,当时,dstart、满足公式(4)~(11),当时,dstart、
满足公式(12)~(19);
当时,dstart、满足公式(20)~(27),当时,dstart、
满足公式(28)~(35);或者,当时,dstart、满足公式(20)~(27),当时,dstart、满足公式(28)~(35)。
结合第二方面或第二方面的第一种至第七种任一种可能实现的方式,在
第二方面的第八种可能实现的方式中,所述UE根据所述循环移位值产生随机接入序列,包括:
第三方面,本发明实施例提供一种随机接入序列的产生方法,包括:
基站在的范围内选择移位序号v,其中,v为整数,为一组内用户设备UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
所述基站根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值;
其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、
满足公式(28)~(35);
其中,NZC为序列长度,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
结合第三方面或第三方面的第一种可能实现的方式,在第三方面的第二种可能实现的方式中,当时,dstart、
满足公式(4)~(11),当时,dstart、满足公式(12)~(19);或者,当时,dstart、满足公式(4)~(11),当时,dstart、满足公式(12)~(19);
当时,dstart、满足公式(20)~(27),当时,dstart、
满足公式(28)~(35);或者,当时,dstart、满足公式(20)~(27),当时,dstart、满足公式(28)~(35)。
第四方面,本发明实施例提供一种随机接入序列的产生方法,包括:
用户设备UE在的范围内选择移位序号v,其中,v为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
所述UE根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值;
其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、
满足公式(28)~(35);
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
结合第四方面或第四方面的第一种可能实现的方式,在第四方面的第二种可能实现的方式中,当时,dstart、
满足公式(4)~(11),当时,dstart、满足公式(12)~(19);或者,当时,dstart、满足公式(4)~(11),当时,dstart、满足公式(12)~(19);
当时,dstart、满足公式(20)~(27),当时,dstart、
满足公式(28)~(35);或者,当时,dstart、满足公式(20)~(27),当时,dstart、满足公式(28)~(35)。
第五方面,本发明实施例提供一种基站,包括:
生成模块,用于生成通知信令;所述通知信令包括指示信息,所述指示信息用于指示用户设备UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
发送模块,用于向所述UE发送所述通知信令,以使所述UE根据所述指示信息产生随机接入序列。
结合第五方面,在第五方面的第一种可能实现的方式中,所述基站还包括:
循环移位值确定模块,用于根据所述移位序号获取循环移位值;
随机接入序列检测模块,用于根据所述循环移位值产生检测序列,使用所述检测序列对所述UE发送的随机接入序列进行检测,所述随机接入序列为所述UE根据所述指示信息产生。
结合第五方面的第一种可能实现的方式,在第五方面的第二种可能实现的方式中,所述循环移位值确定模块,具体用于:
根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值。
其中,公式(4)~(11)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(12)~(19)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(20)~(27)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(28)~(35)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
结合第五方面的第四种至第七种任一种可能实现的方式,在第五方面的第八种可能实现的方式中,当时,dstart、
满足公式(4)~(11),当时,dstart、满足公式(12)~(19);或者,当时,dstart、满足公式(4)~(11),当时,dstart、
满足公式(12)~(19);
当时,dstart、满足公式(20)~(27),当时,dstart、
满足公式(28)~(35);或者,当时,dstart、满足公式(20)~(27),当时,dstart、满足公式(28)~(35)。
第六方面,本发明实施例提供一种用户设备UE,包括:
接收模块,用于接收来自基站的通知信令,所述通知信令包括指示信息,所述指示信息用于指示所述UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
循环移位值确定模块,用于根据所述移位序号获取循环移位值;
随机接入序列产生模块,用于根据所述循环移位值产生随机接入序列。
结合第六方面,在第六方面的第一种可能实现的方式中,所述循环移位值确定模块,具体用于:
根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值。
其中,公式(4)~(11)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(12)~(19)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(20)~(27)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
其中,公式(28)~(35)分别为:
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
结合第六方面的第三种至第六种任一种可能实现的方式,在第六方面的第七种可能实现的方式中,当时,dstart、
满足公式(4)~(11),当时,dstart、满足公式(12)~(19);或者,当
时,dstart、满足公式(4)~(11),当时,dstart、
满足公式(12)~(19);
当时,dstart、满足公式(20)~(27),当时,dstart、
满足公式(28)~(35);或者,当时,dstart、满足公式(20)~(27),当时,dstart、满足公式(28)~(35)。
结合第六方面或第六方面的第一种至第七种任一种可能实现的方式,在第六方面的第八种可能实现的方式中,所述随机接入序列产生模块,具体用于:
第七方面,本发明实施例提供一种基站,包括:
移位序号确定模块,用于在的范围内选择移位序号v,其中,v为整数,为一组内用户设备UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
循环移位值确定模块,用于根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内
UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值;
其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、
满足公式(28)~(35);
其中,NZC为序列长度,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
结合第七方面或第七方面的第一种可能实现的方式,在第七方面的第二种可能实现的方式中,当时,dstart、
满足公式(4)~(11),当时,dstart、
满足公式(12)~(19);或者,当时,dstart、满足公式(4)~(11),当时,dstart、满足公式(12)~(19);
当时,dstart、满足公式(20)~(27),当时,dstart、
满足公式(28)~(35);或者,当时,dstart、满足公式(20)~(27),当时,dstart、满足公式(28)~(35)。
第八方面,本发明实施例提供一种用户设备UE,包括:
移位序号确定模块,用于在的范围内选择移位序号v,其中,v为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
循环移位值确定模块,用于根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值;
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
结合第八方面或第八方面的第一种可能实现的方式,在第八方面的第二种可能实现的方式中,当时,dstart、
满足公式(4)~(11),当时,dstart、
满足公式(12)~(19);或者,当时,dstart、满足公式(4)~(11),当时,dstart、满足公式(12)~(19);
当时,dstart、满足公式(20)~(27),当时,dstart、
满足公式(28)~(35);或者,当时,dstart、满足公式(20)~(27),当时,dstart、满足公式(28)~(35)。
第九方面,本发明实施例提供一种随机接入序列的产生系统,包括:第五方面或第五方面的第一种至第八种任一种所述的基站,及第六方面或第六方面的第一种至第八种任一种所述的用户设备UE。
第十方面,本发明实施例提供一种随机接入序列的产生系统,包括:第七方面或第七方面的第一种至第二种任一种所述的基站,及第八方面或第八方面的第一种至第二种任一种所述的用户设备UE。
本发明实施例的随机接入序列的产生方法、设备及系统;一种随机接入序列的产生方法包括:基站生成通知信令;所述通知信令包括指示信息,所述指示信息用于指示用户设备UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;所述基站向所述UE发送所述通知信令,以使所述UE根据所述指示信息产生随机接入序列。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下
面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明随机接入序列的产生方法实施例一的流程图;
图2为本发明随机接入序列的产生方法实施例二的流程图;
图3为本发明实施例场景一示意图;
图4为本发明实施例场景二示意图;
图5为本发明实施例场景三示意图;
图6为本发明实施例场景四示意图;
图7为本发明实施例场景五示意图;
图8为本发明实施例场景六示意图;
图9为本发明实施例场景七示意图;
图10为本发明随机接入序列的产生方法实施例三的流程图;
图11为本发明随机接入序列的产生方法实施例五的流程图;
图12为本发明随机接入序列的产生方法实施例六的流程图;
图13为本发明基站实施例一的结构示意图;
图14为本发明基站实施例二的结构示意图;
图15为本发明用户设备实施例一的结构示意图;
图16为本发明基站实施例三的结构示意图;
图17为本发明用户设备实施例三的结构示意图;
图18为本发明基站实施例四的结构示意图;
图19为本发明用户设备实施例四的结构示意图;
图20为本发明基站实施例五的结构示意图。
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
图1为本发明随机接入序列的产生方法实施例一的流程图;如图1所示,
本实施例的方法可以包括:
步骤101、基站生成通知信令;所述通知信令包括指示信息;所述指示信息用于指示用户设备UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
需要说明的是,本发明中的“组”为对序列移位的分组,表示对序列移位进行分组后,得到的组的数目;表示对序列移位进行分组后,一组序列移位内可以区分的UE的数目;表示对序列移位以分组方式进行划分后,剩余的不满一组的长度内的序列移位还区分的UE的数目;及表示所有的序列移位中,除所确定占用的序列移位外,剩余的离散的序列移位中可以区分的UE的数目。
步骤102、所述基站向所述UE发送所述通知信令,以使所述UE根据所述指示信息产生随机接入序列。
现有技术中,将移位序列进行分组,确定出组的数目一组内UE候选的序列移位的数目以及最后一个不满一组的长度内UE候选的序列移位的数目三个参数,并在这三个参数所确定的区间中选择移位序号;可以看出,现有技术中在确定移位序号选择范围时,仅从组的角度来考虑可以区分多少UE,而并未考虑进行分组之后剩余的其他离散的移位序列。本发明中,在从组的角度考虑可以区分多少各UE之后,还考虑了分组之后剩余的其他离散的移位序列中进一步的还可以区分的UE的数目,即第一剩余序列移位中UE候选的序列移位的数目及第二剩余序列移位中UE候选的序列移位的数目并在通知信令中指示UE在的范围内选择移位序号;从而增大了移位序号的选择范围。
图2为本发明随机接入序列的产生方法实施例二的流程图;如图2所示,
可选的,步骤102之后,还可以包括:
可选的,由于基站无法获知UE发送随机接入序列时所使用的移位序号,因此在对UE发送的随机接入序列进行检测时,基站在的范围内依次选择遍历各移位序号;或者,所述基站在0~X的范围内依次选择遍历各移位序号,其中,X为小于的整数。
步骤202、所述基站根据所述移位序号获取循环移位值;
可选的,所述基站根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取所述UE的循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值。
需要说明的是,doffset为一整数(通常为常整数),且基站侧和UE侧使用的doffset需要相同,可选的,可以通过预先约定的方式来实现基站侧和UE侧使用相同大小的doffset。比如,doffset=0。
需要说明的是,本发明中mod表示取模运算,例如4mod2=0,5mod2=1。
步骤203、所述基站根据所述循环移位值产生检测序列,使用所述检测
序列对所述UE发送的随机接入序列进行检测,所述随机接入序列为所述UE根据所述指示信息产生。
具体的,所述基站对根为u的ZC序列xu(n),进行循环移位,若循环移位值为K,则根据该循环移位值产生的ZC序列为xu((n+K)mod NZC),其中,NZC为ZC序列长度。
可选的,基站使用所述循环移位值产生检测序列对UE发送的随机接入序列进行相关检测。其中,可以在时域进行相关检测,或者也可以根据时域相关检测方式对应的频域检测方式,在频域进行检测。
其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
需要说明的是,本发明中max表示取最大值,例如max(0,1)=1,max(4,5)=5;min表示取最小值,例如min(0,1)=0,min(4,5)=4。
本实施例中,通过基站在的范围内选择移位序号;所述基站根据所述移位序号获取循环移位值;所述基站根据所述循环移位值产生检测序列,使用所述检测序列对所述UE发送的随机接入序列进行检测,所述随机接入序列为所述UE根据所述指示信息产生;解决了当多普勒频移大于1倍的PRACH子载波间隔小于2倍的PRACH子载波间隔时,多个UE随机接入序列之间互相干扰的问题,避免了多个UE随机接入序列之间的相互干扰,提高了基站解码随机接入序列的准确性。
以下对本实施例中dstart、满足公式(4)~(11)、或公式(12)~(19)、或公式(20)~(27)、或公式(28)~(35)能够实现当多普勒频移大于1倍的PRACH子载波间隔小于2倍的PRACH子载波间隔时,避免多个UE随机接入序列之间相互干扰的原因进行
说明。
假设UE发送的信号为r(t)ej2πft,其中,r(t)为基带信号,ej2πft为载频,则mΔf的多普勒频移得到的信号为r(t)ej2π(f+mΔf)t,其中,m为正整数,Δf为1倍的PRACH子载波间隔;
根据快速傅立叶逆变换(IFFT,Inverse Fast Fourier Transform)的性质,频域的间隔倒数等于时域周期,则相当于其中Δf为子载波间隔,Δt为时域采样间隔,N为离散傅里叶变换(DFT,Discrete Fourier Transformation)或离散傅里叶逆变换(IDFT,Inverse Discrete Fourier Transform)的大小。
令t=nΔt,则r(t)ej2π(f+mΔf)t=(r(t)ej2π(mn)/N)ej2πft。其中(r(t)ej2π(mn)/N)为等效的基带信号。
性质1:
UE向基站发送随机接入序列,若UE和基站接收端之间存在±mΔf的多普勒频移,则基站接收端接收到的随机接入序列为UE所发送随机接入序列的移位序列,且两个序列之间存在固定相位的偏移。
由公式(37)可以看出:为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位,也即,多普勒频移为1倍的PRACH子载波间隔时,基站接收到的随机接入序列与UE发送的随机接入序列之间的循环移位长度。
从公式(15)可以看出,若UE和基站接收端之间存在-mΔf的多普勒频移,则时域上基站接收的随机接入序列为UE发送的随机接入序列的移位序列,且两个序列之间存在固定相位的偏移(与n无关)。同理,+mΔf多普勒频移,则时域上基站接收的随机接入序列也为UE发送的随机接入序列的移位序列,在此不再赘述。
即,对于根为u的ZC序列xu(n),当多普勒频移foff小于1倍的PRACH子载波间隔Δf,且UE发送的随机接入序列为xu(n)时,则基站接收端使用序列xu(n)、或与UE所发送的随机接入序列进行相关时,会出现峰值。
需要说明的是,性质2通过实验确定。
由性质1和性质2可以看出:
即,对于根为u的ZC序列xu(n),当多普勒频移foff=Δf+x(其中,0<x<Δf),且UE发送的随机接入序列为xu(n)时,则基站接收端使用序列xu(n)、或与UE所发送的随机接入序列进行相关时,会出现峰值。
即,对于根为u的ZC序列xu(n),当多普勒频移foff=-Δf-x(其中,
0<x<Δf),且UE发送的随机接入序列为xu(n)时,则基站接收端使用序列xu(n)、或与UE所发送的随机接入序列进行相关时,会出现峰值。
即,对于根为u的ZC序列xu(n),当多普勒频移大于1倍的PRACH子载波间隔Δf小于2倍的PRACH子载波间隔,且UE发送的随机接入序列为xu(n)时,则基站接收端使用序列xu(n)、或与UE所发送的随机接入序列进行相关时,可能会出现峰值。
本实施例中,dstart、满足公式(4)~(11)、或公式(12)~(19)、或公式(20)~(27)、或公式(28)~(35)的目的就是为了避免将基站接收端由大于1倍的PRACH子载波间隔小于2倍的PRACH子载波间隔的多普勒频移所产生的5个峰值点对应的序列分配给其他用户,以避免由多普勒频移所引起的各用户之间的干扰。
图3为本发明实施例场景一示意图,图中N=NZC,且满足(或者,),如图3所示,将10、1+1、1+2、1-1、1+2所占的序列移位作为第1组,将20、2+1、2+2、2-1、2+2所占的序列移位作为第2组;一组内UE候选的序列移位的数目其中,NCS表示一个用户所占的循环移位的数目,比如,序列长度为NZC,一个用户占NCS个移位,当不考虑多普勒频移时,则最多同时支持个用户同时发送随机接入序列。
需要说明的是,对于序列长度为NZC的ZC序列,当不考虑多普勒频移且NCS=0时,其可以有NZC个候选序列移位,分别对应循环移位值0~NZC-1;例如,若将根为u的ZC序列记为xu(n),当循环移位值为0时,其生成的序列为xu(n),当循环移位值为1时,其生成的序列为xu(n+1)。当不考虑多普勒频移,NCS大于0时,则可以有个候选序列移位,分别对应循环移位值Y*NCS,其中,Y为大于等于0小于的整数。
由于当多普勒频移大于1倍的PRACH子载波间隔小于2倍的PRACH子载波间隔时,第一用户设备以第一循环移位值生成随机接入序列发送至基站,基站使用5个循环移位值对应的序列对第一用户设备所发送的随机接入序列进行检测时可能会出现峰值,且这些循环移位值与第一循环移位值之间的差值分别为0、du、-du、2du、-2du。为了避免第一用户设备与其他用户设备之间的干扰,因此这5个循环移位值对应的候选序列移位都不能再分配给其他用户设备,同时对于基站侧来说,也相当于这5个循环移位值对应的候选序列移位都分配给了第一用户设备,也即,如图3所示,与“1”相关的序列移位(也即,10、1+1、1+2、1-1、1+2所占的序列移位),作为同一组UE的候选序列移位,与“2”相关的序列移位(也即,20、2+1、2+2、2-1、2+2所占的序列移位)作为同一组UE的候选序列移位。
并且,由于5个循环移位值与第一循环移位值之间的差值分别为0、du、-du、2du、-2du;因此,也可以看出:对于第1组UE中的第一个UE来说,10所占的序列移位中的起始序列移位为第1组UE中的第一个UE的循环移位值;对于第2组UE中的第一个UE来说,20所占的序列移位中的起始序列移位为第2组UE中的第一个UE的循环移位值。
表示第二剩余序列移位中UE候选的序列移位的数目;其中,第二剩余序列移位如图3中填充图案为右斜条纹的部分所示。
例如,当NZC=839、NCS=18、du=222时,可以对应图3所示的场景。
需要说明的是,图3中填充图案为原点图案的部分是为了同步表示一组所占的五块移位序列中的一块,以更易说明如何分配各组。
图4为本发明实施例场景二示意图,图中N=NZC,且满足(或),如图4所示,将10、1+1、1+2、1-1、1+2所占的序列移位作为第1组,将20、2+1、2+2、2-1、2+2所占的序列移位作为第2组;一组内UE候选的序列移位的数目其中,NCS表示一个用户所占的循环移位的数目。
例如,当NZC=839、NCS=22、du=221时,可以对应图4所示的场景。
需要说明的是,图4中填充图案为原点图案的部分是为了同步表示一组所占的五块移位序列中的一块,以更易说明如何分配各组。
图5为本发明实施例场景三示意图,图中N=NZC,且满足(或),如图5所示,将10、1+1、1+2、1-1、1+2所占的序列移位作为第1组,将20、2+1、2+2、2-1、2+2所占的序列移
位作为第2组;一组内UE候选的序列移位的数目其中,NCS表示一个用户所占的循环移位的数目。
图5中可以为1,也即填充图案为字符A(可以对应0)、B(可以对应+du)、C(可以对应+2du)、D(可以对应-du)、E(可以对应-2du)对应的5个候选序列移位作为一个新候选序列移位分配给一UE。
例如,当NZC=839、NCS=18、du=220时,可以对应图5所示的场景。
需要说明的是,图5中填充图案为原点图案的部分是为了同步表示一组所占的五块移位序列中的一块,以更易说明如何分配各组。
图6为本发明实施例场景四示意图,图中N=NZC,且满足(或者,),如图6所示,将10、1+1、1+2、1-1、1+2所占的序列移位作为第1组,将20、2+1、2+2、2-1、2+2所占的序列移位作为第2组;一组内UE候选的序列移位的数目
表示的是最后一个不满一组的长度内UE候选的序列移位的数目。如图6中所示,最后一个不满一组的长度内UE候选的序列移位的数目可以为1,也即填充图案为字符A、B、C、D、E对应的5个候选序列移位作为一个新候选序列移位分配给一UE。
例如,当NZC=839、NCS=22、du=264时,可以对应图6所示的场景。
需要说明的是,图6中填充图案为原点图案的部分是为了同步表示一组所占的五块移位序列中的一块,填充图案为竖条图案的部分是为了同步表示填充图案为字符所占的序列移位,以更易说明如何分配各组。
图7为本发明实施例场景五示意图,图中N=NZC,且满足(或),如图7所示,将10、1+1、1+2、1-1、1+2所占的序列移位作为第1组,将20、2+1、2+2、2-1、2+2所占的序列移位作为第2组;一组内UE候选的序列移位的数目其中,NCS表示一个用户所占的循环移位的数目。
例如,当NZC=839、NCS=22、du=261时,可以对应图7所示的场景。
需要说明的是,图7中填充图案为原点图案的部分是为了同步表示一组所占的五块移位序列中的一块,以更易说明如何分配各组。
图8为本发明实施例场景六示意图,图中N=NZC,且满足(或者,),如图8所示,将10、1+1、1+2、1-1、1+2所占的序列移位作为第1组,将20、2+1、2+2、2-1、2+2所占的序列移位作为第2组;一组内UE候选的序列移位的数目
表示的是最后一个不满一组的长度内UE候选的序列移位的数目。如图8中所示,最后一个不满一组的长度内UE候选的序列移位的数目可以为1,也即填充图案为字符A、B、C、D、E对应的5个候选序列移位作为一个新候选序列移位分配给一UE。
例如,当NZC=839、NCS=22、du=300时,可以对应图8所示的场景。
图9为本发明实施例场景七示意图,图中N=NZC,且满足(或者,),如图9所示,将10、1+1、1+2、1-1、1+2所占的序列移位作为第1组,将20、2+1、2+2、2-1、2+2所占的序列移位作为第2组;一组内UE候选的序列移位的数目
表示的是最后一个不满一组的长度内UE候选的序列移位的数目。如图9中所示,最后一个不满一组的长度内UE候选的序列移位的数目可以为1,也即填充图案为字符A、B、C、D、E对应的5个候选序列移位作为一个新候选序列移位分配给一UE。
例如,当NZC=839、NCS=22、du=393时,可以对应图9所示的场景。
图10为本发明随机接入序列的产生方法实施例三的流程图;如图10所示,本实施例的方法可以包括:
步骤1001、UE接收来自基站的通知信令;所述通知信令包括指示信息,所述指示信息用于指示所述UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
步骤1002、所述UE根据所述通知信令选择移位序号;
步骤1003、所述UE根据所述移位序号获取循环移位值;
步骤1004、所述UE根据所述循环移位值产生随机接入序列。
本实施例中,通过UE根据所述通知信令在的范围内选择移位序号,使得在从组的角度考虑可以区分多少各UE之后,还考虑了分组之后剩余的其他离散的移位序列中进一步的还可以区分的UE的数目,增大了移位序号的选择范围。
随机接入序列的产生方法实施例四
可选的,在本发明随机接入序列的产生方法实施例三的基础上,步骤1003具体可以包括:
所述UE根据移位序号v,采用公式(1)、公式(2)或公式(3),获取循环移位值Cv
可选的,步骤1004具体可以包括:
其中,NZC为序列长度,根为u的ZC序列定义为:
图11为本发明随机接入序列的产生方法实施例五的流程图;如图11所示,本实施例的方法可以包括:
步骤1101、基站选择移位序号;
具体的,基站在的范围内选择移位序号v,其中,v为整数,为一组内用户设备UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
步骤1102、所述基站根据移位序号,获取循环移位值。
具体的,基站根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值;
本实施例中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、
满足公式(20)~(27);或者,所述dstart、
满足公式(28)~(35)。
图12为本发明随机接入序列的产生方法实施例六的流程图;如图12所示,本实施例的方法可以包括:
步骤1201、UE选择移位序号;
其中,v为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目。
步骤1202、所述UE根据移位序号,获取循环移位值;
具体的,所述UE根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:
其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值。
步骤1203、所述UE根据所述循环移位值,产生随机接入序列。
本实施例中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、
满足公式(20)~(27);或者,所述dstart、
满足公式(28)~(35)。
图13为本发明基站实施例一的结构示意图,如图13所示,本实施例的基站可以包括:生成模块1301和发送模块1302。其中,生成模块1301,用于生成通知信令;所述通知信令包括指示信息,所述指示信息用于指示用户设备UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,
为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;发送模块1302,用于向所述UE发送所述通知信令,以使所述UE根据所述指示信息产生随机接入序列。
本实施例的基站,可以用于执行图1所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图14为本发明基站实施例二的结构示意图,如图14所示,本实施例的基站在图13所示基站结构的基础上,进一步地,还可以包括:移位序号确定模块1303、循环移位值确定模块1304和随机接入序列检测模块1305。其中,移位序号确定模块1303,用于在的范围内选择移位序号;循环移位值确定模块1304,用于根据所述移位序号获取循环移位值;随机接入序列检测模块1305,用于根据所述循环移位值产生检测序列,使用所述检测序列对所述UE发送的随机接入序列进行检测,所述随机接入序列为所述UE根据所述指示信息产生。
可选的,循环移位值确定模块1304,具体用于:
根据移位序号v,采用公式(1)、公式(2)或公式(3),获取循环移位值Cv。
本实施例的基站,可以用于执行图2所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图15为本发明用户设备实施例一的结构示意图,如图15所示,本实施例的用户设备可以包括:接收模块1501、移位序号确定模块1502、循环移位值确定模块1503和随机接入序列产生模块1504。其中,接收模块1501,用于接收来自基站的通知信令,所述通知信令包括指示信息,所述指示信息用于指示所述UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;移位序号确定模块1502,用于根据所述通知信令在的范围内选择移位序号;循环移位值确定模块1503,用于根据所述移位序号获取循环移位值;随机接入序列产生模块1504,用于根据所述循环移位值产生随机接入序列。
本实施例的UE,可以用于执行图10所示方法实施例的技术方案,其实
现原理和技术效果类似,此处不再赘述。
用户设备实施例二
可选的,在本发明用户设备实施例一的基础上,循环移位值确定模块1503,具体用于:
根据移位序号v,采用公式(1)、公式(2)或公式(3),获取循环移位值Cv。
可选的,随机接入序列产生模块1504,具体用于:
本实施例的UE,可以用于执行随机接入序列的产生方法实施例四的技术方案,其实现原理和技术效果类似,此处不再赘述。
本发明还提供一种随机接入系列的产生系统,包括基站实施例一或实施例二所述的基站,及用户设备实施例一或实施例二所述的用户设备。
图16为本发明基站实施例三的结构示意图,如图16所示,本实施例的基站可以包括:移位序号确定模块1601、循环移位值确定模块1602。其中,移位序号确定模块1601,用于在的范围内选择移位序号v,其中,v为整数,为一组内用户设备UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
循环移位值确定模块1602,用于根据移位序号v,采用公式(1)、公式(2)或公式(3),获取循环移位值Cv;
其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、
满足公式(28)~(35)。
本实施例的基站,可以用于执行图11所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图17为本发明用户设备实施例三的结构示意图,如图17所示,本实施例的基站可以包括:移位序号确定模块1701、循环移位值确定模块1702和随机接入序列产生模块1703。其中,移位序号确定模块1701,用于在的范围内选择移位序号v,其中,v为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;循环移位值确定模块1702,用于根据移位序号v,采用公式(1)、公式(2)或公式(3),获取循环移位值Cv;随机接入序列产生模块1703,用于根据所述循环移位值Cv,采用公式(36)产生随机接入序列
其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、
满足公式(28)~(35)。
本实施例的用户设备,可以用于执行图12所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
本发明还提供一种随机接入系列的产生系统,包括基站实施例三所述的基站,及用户设备实施例三所述的用户设备。
图18为本发明基站实施例四的结构示意图,如图18所示,本实施例的基站可以包括:处理器1801和发送器1802。其中,处理器1801,用于生成通知信令;所述通知信令包括指示信息,所述指示信息用于指示用户设备UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;发送器1802,用于向所述UE发送所述通知信令,以使所述UE根据所述指示信息产生随机接入序列。
可选的,处理器1802还用于:
根据所述移位序号获取循环移位值;
根据所述循环移位值产生检测序列,使用所述检测序列对所述UE发送的随机接入序列进行检测,所述随机接入序列为所述UE根据所述指示信息产生。
可选的,处理器1802根据所述移位序号获取循环移位值,具体包括:
根据移位序号v,采用公式(1)、公式(2)或公式(3),获取循环移位值Cv。
本实施例的基站,可以用于执行图1或图2所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图19为本发明用户设备实施例四的结构示意图,如图19所示,本实施例的用户设备可以包括:接收器1901和处理器1902。其中,接收器1901用于接收来自基站的通知信令,所述通知信令包括指示信息,所述指示信息用于指示所述UE在的范围内选择移位序号;其中,所述移位序号为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;处理器1902,用于根据所述通知信令在的范围内选择移位序号;根据所述移位序号获取循环移位值;根据所述循环移位值产生随机接入序列。
可选的,处理器1902根据所述移位序号获取循环移位值,具体包括:
根据移位序号v,采用公式(1)、公式(2)或公式(3),获取循环移位值Cv。
可选的,处理器1902根据所述循环移位值产生随机接入序列,具体包括:
本实施例的UE,可以用于执行随机接入序列的产生方法实施例三或实施例四的技术方案,其实现原理和技术效果类似,此处不再赘述。
图20为本发明基站实施例五的结构示意图,如图20所示,本实施例的基站可以包括:处理器2001和存储器2002。该装置还可以包括发射器2003、接收器2004。发射器2003和接收器2004可以和处理器2001相连。其中,发射器2003用于发送数据或信息,接收器2004用于接收数据或信息,存储器2002存储执行指令,当装置运行时,处理器2001与存储器2002之间通信,处理器2001调用存储器2002中的执行指令,用于执行以下操作:
在的范围内选择移位序号v,其中,v为整数,为一组内用户设备UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
根据移位序号v,采用公式(1)、公式(2)或公式(3),获取循环移位值Cv;
其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、
满足公式(28)~(35)。
本实施例的基站,可以用于执行图11所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
用户设备实施例五的结构示意图,本实施例的用户设备与图20所示基站的结构相同,同样可以包括:处理器和存储器。该装置还可以包括发射器、接收器。发射器和接收器可以和处理器相连。其中,发射器用于发送数据或信息,接收器用于接收数据或信息,存储器存储执行指令,当装置运行时,处理器与存储器之间通信,处理器调用存储器中的执行指令,用于执行以下操作:
在的范围内选择移位序号v,其中,v为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;
根据移位序号v,采用公式(1)、公式(2)或公式(3),获取循环移位值Cv;
其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、
满足公式(28)~(35)。
本实施例的用户设备,可以用于执行图12所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
本领域普通技术人员可以理解:实现上述各方法实施例的全部或部分步
骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储介质包括:ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (50)
- 一种随机接入序列的产生方法,其特征在于,包括:基站在的范围内选择移位序号v,其中,v为整数,为一组内用户设备UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;所述基站根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值;其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、 满足公式(28)~(35);其中,NZC为序列长度,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
- 一种随机接入序列的产生方法,其特征在于,包括:用户设备UE在的范围内选择移位序号v,其中,v为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;所述UE根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值;其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、 满足公式(28)~(35);其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
- 一种基站,其特征在于,包括:移位序号确定模块,用于在的范围内选择移位序号v,其中,v为整数,为一组内用户设备UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移位中UE候选的序列移位的数目;循环移位值确定模块,用于根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值;其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、 满足公式(28)~(35);其中,NZC为序列长度,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
- 一种用户设备UE,其特征在于,包括:移位序号确定模块,用于在的范围内选择移位序号v,其中,v为整数,为一组内UE候选的序列移位的数目,为组的数目,为最后一个不满一个组的长度内UE候选的序列移位的数目,为第一剩余序列移位中UE候选的序列移位的数目,为第二剩余序列移 位中UE候选的序列移位的数目;循环移位值确定模块,用于根据移位序号v,采用如下公式(1)、公式(2)或公式(3),获取循环移位值Cv:其中,doffset为移位偏移;dstart为相邻组之间的循环移位距离,为一组内UE候选的序列移位的数目,NCS为一个用户所占的循环移位的数目,为第一剩余序列移位中第一个UE候选的序列移位的循环移位值,为第二个剩余序列移位中第一个UE候选的序列移位的循环移位值;其中,所述dstart、满足公式(4)~(11);或者,所述dstart、满足公式(12)~(19);或者,所述dstart、满足公式(20)~(27);或者,所述dstart、 满足公式(28)~(35);其中,du为多普勒频移为1倍的PRACH子载波间隔时随机接入序列对应的循环移位。
- 一种随机接入序列的产生系统,其特征在于,包括:权利要求25-33任一项所述的基站,及权利要求34-42任一项所述的用户设备UE。
- 一种随机接入序列的产生系统,其特征在于,包括:权利要求43-45任一项所述的基站,及权利要求46-48任一项所述的用户设备UE。
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