CN109600211A - The frequency hopping treating method and apparatus and terminal and storage medium of random access preamble - Google Patents

The frequency hopping treating method and apparatus and terminal and storage medium of random access preamble Download PDF

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Publication number
CN109600211A
CN109600211A CN201711377581.0A CN201711377581A CN109600211A CN 109600211 A CN109600211 A CN 109600211A CN 201711377581 A CN201711377581 A CN 201711377581A CN 109600211 A CN109600211 A CN 109600211A
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China
Prior art keywords
preamble
frequency domain
domain resource
index
frequency
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CN201711377581.0A
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CN109600211B (en
Inventor
杨玲
赵亚军
张峻峰
李新彩
徐汉青
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ZTE Corp
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ZTE Corp
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/0012Hopping in multicarrier systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0866Non-scheduled access, e.g. ALOHA using a dedicated channel for access

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The frequency hopping treating method and apparatus and terminal and storage medium of a kind of random access preamble provided in an embodiment of the present invention, in the case where enabled for Preamble frequency hopping, according to preset frequency pattern or rule, the transmission of Preamble is carried out in the resource that frequency pattern is specified;And receiving or detecting for Preamble is carried out in specified resource according to preset frequency pattern, using the above scheme, when sending Preamble, frequency hopping is carried out on frequency domain, improve uplink coverage area, obtain frequency diversity gain.

Description

The frequency hopping treating method and apparatus and terminal and storage medium of random access preamble
Technical field
The present invention relates to the frequency hopping processing method of the communications field more particularly to a kind of Preamble (random access preamble) and Device and terminal and computer readable storage medium.
Background technique
Compared to 2G, 3G, 4G system, the 5G third generation mobile communication system works in relatively high carrier wave frequency range, for example, 3GHz-6GHz, even greater than 6GHz;These frequency ranges have transmission loss larger, cover under equal-wattage for low-frequency range The features such as lid range is smaller;Currently, the solution increased for the coverage area of 5G system is by wave beam inborn nature technology Mode is realized, however the uplink coverage area of such scheme is still not big enough.
Summary of the invention
The embodiment of the present invention mainly solving the technical problems that, provide a kind of random access preamble frequency hopping processing method and Device and terminal and computer readable storage medium solve in the prior art, not big enough the problem of uplink coverage area.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of frequency hopping processing method of random access preamble, packet It includes:
In the case where frequency hopping is enabled, transmission device is enterprising in specified resource according to preset frequency pattern or rule The transmission of row random access preamble;And/or
Transmission device carries out receiving or detecting for random access preamble in the specified resource.
In one embodiment, the frequency pattern or rule are determined according at least one of following parameter:
The format of random access preamble;
The spatial structure of random access preamble;
The transmission of random access preamble repeats the number sent;
Frequency hopping time domain granularity Y;
The number of symbols that random access preamble occupies;
Frequency hopping bandwidth;
The frequency domain resource number K that can be used on the Physical Random Access Channel of transmitting random access preamble;
Subcarrier spacing SCS;
Available number of sub-bands T1;
Frequency domain position or index;
Subband position or subband index.
In one embodiment, the spatial structure of the random access preamble includes at least one of:
M1 cyclic prefix CP;
N number of random access leader sequence;
M2 protection interval GT;
Wherein, N is positive integer more than or equal to 1, M1, M2 be more than or equal to 1, and/or, just less than or equal to N Integer.
In one embodiment, N number of random access leader sequence meets following one condition:
N number of random access leader sequence is identical sequence;
N number of random access leader sequence is not exactly the same sequence.
In one embodiment, the frequency hopping time domain granularity Y is one of the following:
Subframe;Time slot;Small time slot;The unit being made of Q OFDM symbol;
Wherein, Q be more than or equal to 1, and, less than or equal to a positive integer between 6 or 7 or 12 or 14.
In one embodiment, including at least one of frequency domain resource configuration mode:
Determine that K are used for transmission on the Physical Random Access Channel of random access preamble in frequency hopping bandwidth according to ad hoc fashion Frequency domain resource;
By frequency hopping bandwidth partition at T1 available subbands, random access preamble is used for transmission comprising T2 in each subband Frequency domain resource on Physical Random Access Channel;Wherein, T1 is multiplied resulting value with T2 equal to frequency domain resource number K.
In one embodiment, the Physical Random Access Channel frequency domain resource for being used for transmission random access preamble is big It is small related with the subcarrier spacing;
Wherein, the size of the Physical Random Access Channel frequency domain resource under the subcarrier spacing, can be according to existing LTE The Physical Random Access Channel frequency domain resource size under middle corresponding subcarrier spacing carries out zooming in or out for corresponding proportion.
In one embodiment, the frequency hopping bandwidth is determined by following parameter: frequency offset amount offset;Continuous frequency domain money Source length.
It in one embodiment, is the specified Physical Random Access Channel frequency domain after frequency hopping for the specified resource Resource, alternatively, subband situation belonging to the Physical Random Access Channel frequency domain resource, it can be true by least one of mode When fixed described:
Referred to after determining frequency hopping by least one of relevant parameter according to the value that default rule or algorithm obtain Fixed Physical Random Access Channel frequency domain resource index, alternatively, subband belonging to the Physical Random Access Channel frequency domain resource Index;
Wherein, relevant parameter, comprising: the Physical Random Access Channel frequency domain resource rope that Preamble is sent before frequency hopping Draw, Preamble index, UE ID, constant offset amount offset, based on frequency domain resource number K obtained prime number a and prime number b, Total K, the mirror image of Physical Random Access Channel frequency domain resource are enabled, frequency hopping is enabled, frequency hopping direction/surround mode.
In one embodiment, the constant offset amount offset includes at least one of:
The granularity of the constant offset amount offset offset includes following one:
The frequency domain resource of the occupancy of Physical Random Access Channel;Subband;
The value of the constant offset amount offset includes at least one of:
Offset offset be more than or equal to 0, and, less than or equal to the positive integer of frequency domain resource number K;
Offset offset be more than or equal to 0, and, less than or equal to the positive integer of number of sub-bands T1.
In one embodiment, when the parameter is Preamble index, the default rule or algorithm Are as follows:
Specified Physical Random Access Channel frequency domain resource index after the frequency hopping, alternatively, belonging to the frequency domain resource Subband index is the specified Preamble index and Physical Random Access Channel frequency domain resource number K of the transmission, or Resulting value after number of sub-bands T1 modulus.
In one embodiment, for there are multiple UE to send the leading feelings of Preamble in same available frequency domain resource Condition, the Preamble lead code that each UE in same Physical Random Access Channel frequency domain resource is sent meet following one Condition:
The Preamble index that each UE is sent is from different Preamble index groups;
The Preamble index that each UE is sent comes from identical Preamble index group.
In one embodiment, the division mode of the Preamble index group, including at least one of:
Modulus operation is carried out according to Preamble index and Physical Random Access Channel frequency domain resource number K, it will be described Which identical Preamble index of operation resulting value is divided into the same Preamble index group, is divided into K altogether Preamble index group;
Using Physical Random Access Channel frequency domain resource number K as granularity of division, Preamble index is divided into several A Preamble index group, the Preamble index number that each Preamble index group includes are K.
In one embodiment, further include at least one of:
For being carried out according to the transmission Preamble index and Physical Random Access Channel frequency domain resource number K The case where modulus operation:
When mirror image is enabled, sent after frequency hopping the determination of the Physical Random Access Channel frequency domain resource index of Preamble according to The operation resulting value, and, Physical Random Access Channel frequency domain resource number K;Alternatively,
The Physical Random Access Channel frequency domain resource index that Preamble is sent after frequency hopping is Physical Random Access Channel frequency Domain number of resources K subtracts operation resulting value and subtracts again or plus 1;
The case where for carrying out modulus operation according to the transmission Preamble index and number of sub-bands T1, including At least one of:
When mirror image is enabled, sent after frequency hopping the subband index of Preamble determination can according to operation resulting value, and, Number of sub-bands T1;
The subband index of transmission Preamble subtracts operation resulting value for subband index T1 and subtracts again or plus 1 after frequency hopping; Wherein, relative position of the Preamble in subband is constant;
When the mirror image in subband is enabled, then the frequency domain resource position for sending Preamble after frequency hopping in the subband is phase For Physical Random Access Channel frequency domain resource number T2 in subband, with Preamble before frequency hopping in the subband position mirror image Or symmetrical position.
In one embodiment, when the parameter is UE ID, the default rule or algorithm are as follows:
Specified Physical Random Access Channel frequency domain resource index after the frequency hopping, alternatively, belonging to the frequency domain resource Subband index is the UE ID and frequency domain resource number K, alternatively, the resulting value after number of sub-bands T1 modulus.
In one embodiment, for there are multiple UE to send the random access preamble in same available frequency domain resource The case where, further includes:
In the case of the index of frequency domain resource after the frequency hopping determined based on different UE ID is identical, in conjunction with described random Parameter in access lead is adjusted the index of the frequency domain resource after the frequency hopping, so that difference UE ID is corresponding described The index of the frequency domain resource adjusted after random access preamble frequency hopping is not identical.
In one embodiment, when the parameter is constant offset amount offset, the default rule or operation method Then are as follows:
According to the frequency domain resource index for sending the random access preamble before the frequency hopping, alternatively, the frequency domain resource institute The subband index of category determines the frequency domain resource index specified after the frequency hopping with, constant offset amount offset, alternatively, the frequency domain Subband index belonging to resource.
It is in one embodiment, described to be indexed according to the frequency domain resource for sending the random access preamble before the frequency hopping, Alternatively, subband index belonging to the frequency domain resource, and constant offset amount offset determines the frequency domain resource specified after the frequency hopping Subband index belonging to index or the frequency domain resource, including at least one of:
The frequency domain resource index specified after the frequency hopping, alternatively, subband index belonging to the frequency domain resource are as follows: the frequency hopping The preceding frequency domain resource index for sending the random access preamble, alternatively, subband index belonging to the frequency domain resource and constant offset Measure the resulting value of the sum of offset, then with frequency domain resource number K, alternatively, the resulting value after number of sub-bands T1 modulus;
The frequency domain resource index specified after the frequency hopping, alternatively, subband index belonging to the frequency domain resource are as follows: the frequency hopping The preceding frequency domain resource index for sending the random access preamble, alternatively, subband index belonging to the frequency domain resource and constant offset Measure the resulting value of the sum of offset.
In one embodiment, the constant offset amount offset can be at least one of:
The numerical value generated based on random function;More than or equal to 1 and it is less than or equal to Physical Random Access Channel frequency domain money Source number K, alternatively, the value of number of sub-bands T1.
In one embodiment, in K frequency domain resource, or, being taken in T1 son, after determining frequency hopping in an orbiting manner Physical Random Access Channel on frequency domain resource index, or, determine frequency hopping after subband index;Wherein, around mode, including Following one: forward direction is surround;It is reversed to surround.
In one embodiment, further include at least one of:
For being indexed according to the frequency domain resource for sending the random access preamble before the frequency hopping, with constant offset amount Offset determines the case where frequency domain resource index specified after the frequency hopping:
When mirror image is enabled, sent after frequency hopping the determination of the Physical Random Access Channel frequency domain resource index of Preamble according to The operation resulting value, and, Physical Random Access Channel frequency domain resource number K;Alternatively,
The Physical Random Access Channel frequency domain resource index that Preamble is sent after frequency hopping is Physical Random Access Channel frequency Domain number of resources K subtracts operation resulting value and subtracts again or plus 1;
For sending subband index belonging to the frequency domain resource of the random access preamble before according to the frequency hopping, with, Constant offset amount offset determines the case where subband index belonging to the frequency domain resource for sending Preamble after the frequency hopping, including At least one of:
When mirror image is enabled, sent after frequency hopping the subband index of Preamble determination can according to operation resulting value, and, Number of sub-bands T1;
The subband index of transmission Preamble subtracts operation resulting value for subband index T1 and subtracts again or plus 1 after frequency hopping; Wherein, relative position of the Preamble in subband is constant;
When the mirror image in subband is enabled, then the frequency domain resource position for sending Preamble after frequency hopping in the subband is phase For Physical Random Access Channel frequency domain resource number T2 in subband, with Preamble before frequency hopping in the subband position mirror image Or symmetrical position.
In one embodiment, further include following one:
The frequency domain resource index specified after the frequency hopping, alternatively, subband index belonging to the frequency domain resource is the frequency hopping The frequency domain resource index of the random access preamble is sent before, alternatively, subband index belonging to the frequency domain resource, alternatively, Preamble index, and, the product resulting value of prime number a, then the resulting value with the sum of prime number b, and frequency domain resource number K, or Person, the resulting value after number of sub-bands T1 modulus;
The frequency domain resource index specified after the frequency hopping, alternatively, subband index belonging to the frequency domain resource is the frequency hopping The preceding frequency domain resource index for sending the random access preamble, alternatively, subband index belonging to the frequency domain resource, alternatively, The quadratic power of Preamble index, the product resulting value with prime number a, then the resulting value with the sum of prime number b, with frequency domain resource number Mesh K, alternatively, the resulting value after number of sub-bands T1 modulus.
In one embodiment, before referring to frequency hopping before the frequency hopping, and, it is the last, or, for the first time, or, previous It is secondary.
In one embodiment, the frequency domain initial position of the frequency domain resource on the Physical Random Access Channel, including with It is one of lower:
When resource situation continuous on frequency domain, the frequency domain initial position calculates in the following way:
Formula one:The formula one indicates resource successively from low frequency to the side of high frequency To identified frequency domain initial position;
Formula two:The formula two indicates resource Successively frequency domain initial position determined by the direction from high frequency to low frequency;
When resource distribution is at the both ends of system bandwidth or frequency hopping bandwidth and low high frequency position is interlocked the case where, the frequency Domain initial position calculates in the following way:
When resource distribution is in the both ends of system bandwidth or frequency hopping bandwidth and a part of low frequency position, another part high frequency position When the case where setting, the frequency domain initial position calculates in the following way:
Wherein, describedFor the frequency domain initial position, the s is subcarrier spacing;The noffsetFor frequency offset Amount, the noffsetValue be positive integer more than or equal to 0 and be less than or equal toValue;
It is describedIndicate the corresponding PRB number of frequency hopping bandwidth or the corresponding PRB number of system bandwidth;
It is describedIndicate the PRB number of the corresponding resource occupation of subcarrier spacing;
The Ki is the call number of frequency domain resource position, and value range is [0, K-1], and the K is frequency domain resource number;
The W is the number of one end distribution continuous resource of system bandwidth or frequency hopping bandwidth;The W is the half of the K.
In one embodiment, the determining frequency pattern or rule configuration parameter acquisition modes, including with down toward It is one of few: predefined, high-rise RRC signaling, RMSI, physical layer DCI signaling.
In one embodiment, the acquisition modes can be also used for obtaining at least one following configuration parameter:
System bandwidth;
Frequency domain constant offset amount;Wherein, the offset granularity is Physical Random Access Channel frequency domain resource granularity, or, Subband granularity;
Mirror image is enabled;
Frequency hopping is enabled;
Frequency hopping direction surround mode;
The frequency domain initial position of Physical Random Access Channel resource;
The initial position of subband;
Corresponding relationship between Preamble index and Physical Random Access Channel resource;
Prime number a, b, a, b are the prime number or a of frequency domain resource data K, and b is the prime number of number of sub-bands T1.
In order to solve the above technical problems, the embodiment of the invention also provides a kind of processing of the frequency hopping of random access preamble to fill It sets, comprising:
Judgment module, for being enabled, being judged next according to random access preamble frequency hopping during sending n times information Secondary random access preamble whether frequency hopping;
Position determination module, for when the judgment module judging result is frequency hopping, then according to preset frequency pattern Or the resource of the specified frequency hopping of rule;
Frequency hopper module, for carrying out frequency hopping processing in the resource that the position determination module determines.
In order to solve the above technical problems, the embodiment of the invention also provides a kind of terminals, comprising: processor, memory and Communication bus;
The communication bus is for realizing the connection communication between processor and memory;
The processor is for executing one or more program stored in memory, to realize that above-mentioned frequency hopping such as is handled Frequency hopping in method sends processing step.
In order to solve the above technical problems, the embodiment of the invention also provides a kind of computer readable storage medium, the meter Calculation machine readable storage medium storing program for executing is stored with one or more program, and one or more of programs can be by one or more It manages device to execute, to realize such as the step of above-mentioned frequency hopping processing method.
The beneficial effects of the present invention are:
The frequency hopping treating method and apparatus and terminal of a kind of random access preamble provided according to embodiments of the present invention and Computer readable storage medium, can be in frequency pattern in the case where frequency hopping is enabled by preset frequency pattern or rule Or the frequency domain resource handled for tone hopping information is specified in rule, frequency hopping processing includes that the frequency hopping of terminal side is sent and system side Frequency hopping receives or detects.The above-mentioned frequency hopping to random access preamble is handled, due on frequency domain to random access preamble information into Having gone frequency hopping transmission, frequency hopping receives or detects, and obtains frequency diversity gain, realizes effective promotion of uplink coverage area.
Other features of the invention and corresponding beneficial effect are described in the aft section of specification, and should be managed Solution, at least partly beneficial effect is apparent from from the record in description of the invention.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the frequency hopping processing method of Preamble provided by the invention;
Fig. 2 is the spatial structure schematic diagram of the RACH Preamble in the embodiment of the present invention one;
Fig. 3 be in the embodiment of the present invention one repeat or transmission times be 2 RACH Preamble spatial structure schematic diagram;
Fig. 4 be in the embodiment of the present invention one repeat or transmission times be 2 and using differentiation mode 1-A RACH Preamble spatial structure schematic diagram;
Fig. 5 be in the embodiment of the present invention one repeat or transmission times be 2 and using differentiation mode 1-B RACH Preamble spatial structure schematic diagram;
Fig. 6 be in the embodiment of the present invention one repeat or transmission times be 2 and omit Preamble sequence between GT or CP RACH Preamble spatial structure schematic diagram;
Fig. 7 be in the embodiment of the present invention one repeat or transmission times be 2 and omit Preamble sequence between GT or CP, using develop mode 2-A RACH Preamble spatial structure schematic diagram;
Fig. 8 be in the embodiment of the present invention one repeat or transmission times be 2 and omit Preamble sequence between GT or CP, using develop mode 2-B RACH Preamble spatial structure schematic diagram;
Fig. 9 be in the embodiment of the present invention one repeat or transmission times be 2 and omit Preamble sequence between GT and CP RACH Preamble spatial structure schematic diagram;
Figure 10 be in the embodiment of the present invention one repeat or transmission times be 2 and omit Preamble sequence between GT and CP, using develop mode 3-A RACH Preamble spatial structure schematic diagram;
Figure 11 be in the embodiment of the present invention one repeat or transmission times be 2 and omit Preamble sequence between GT and CP, using develop mode 3-B RACH Preamble spatial structure schematic diagram;Figure 12 is to be based in the embodiment of the present invention three The frequency pattern schematic diagram of Preamble index;
Figure 13 is one of the frequency pattern in the embodiment of the present invention four based on UE ID schematic diagram;
Figure 14 is two schematic diagrames of the frequency pattern based on UE ID in the embodiment of the present invention four;
Figure 15 is one of the frequency pattern in the embodiment of the present invention four based on constant offset amount offset schematic diagram;
Figure 16 is two schematic diagrames of the frequency pattern based on constant offset amount offset in the embodiment of the present invention five;
Based on the frequency pattern schematic diagram of prime number a, b in Figure 17 embodiment of the present invention five;
The frequency pattern schematic diagram that frequency domain resource selects in subband in Figure 18 embodiment of the present invention six;
Figure 19 is a kind of schematic diagram of the sending device for Preamble that the embodiment of the present invention 13 provides;
Figure 20 is a kind of schematic diagram for terminal that the embodiment of the present invention 14 provides.
Specific embodiment
In order to make present invention solves the technical problem that, technical solution and advantage be more clearly understood, below by specific reality Mode combination attached drawing is applied to be described in further detail the embodiment of the present invention.It should be appreciated that specific embodiment described herein It is only used to explain the present invention, be not intended to limit the present invention.
In order to solve the problems, such as that uplink coverage area is not big enough, the present embodiment provides the frequency hopping processing sides of Preamble a kind of Method, referring to Figure 1, Fig. 1 be a kind of flow chart of the frequency hopping processing method of Preamble provided by the invention, this method include with Lower step:
S101: in the case where enabled for Preamble frequency hopping, according to preset frequency pattern or rule, in frequency pattern Or the transmission of Preamble is carried out in regular specified resource;And/or
S102: sending identical frequency pattern or rule according to frequency hopping, in the specified resource of the frequency pattern or rule It is upper to carry out receiving or detecting for Preamble.
Preset frequency pattern is in the configuration parameter by following PRACH (Physical Random Access Channel) in the present invention At least one is determined:
The starting PRBn of PRACH frequency domain resourceoffset
Subcarrier spacing SCS;
Preamble format;
Preamble is repeated or transmission times N;
Preamble repeats or sends the spatial structure of n times;
The number of symbols that Preamble is occupied;
Frequency hopping time domain granularity Y;
PRACH frequency domain resource number K;
Frequency hopping bandwidth;
Frequency domain constant offset amount;The offset granularity is PRACH frequency domain resource granularity, or, group granularity.
Mirror image is enabled;
Frequency hopping is enabled;
Corresponding relationship between Preamble index and PRACH resource;
Prime number a, b, i.e. a, b are the prime number of K;
The number (as number of sub-bands) of PRACH resource group;
The PRACH number of resources (number for the PRACH resource for including in subband) for including in PRACH resource group;
The method of determination of at least one of above-mentioned parameter: predefined, high-rise RRC signaling, RMSI, physical layer DCI signaling.
Embodiment one: transmission/repetition n times Preamble spatial structure is specifically introduced.
The present embodiment provides a kind of random access channel (Random Access Channel, RACH) Preamble transmission N It is secondary, or, the method for repeating n times.Wherein, the n times of RACH Preamble are sent, or, n times repeat to can be in the time domain continuously , or, being also possible to discrete (alternatively referred to as discrete in time domain).N is the positive integer more than or equal to 1.
The leading structure in the time domain of random access Preamble are as follows: cyclic prefix (Cyclic Prefix, CP)+ Preamble sequence+ protection interval (Guard Time, GT).As shown in Fig. 2, Fig. 2 is RACH shown in the present invention The spatial structure of Preamble.Being introduced for preventing of CP and GT leads to center of housing estate since air interface transmission time delay is different, With the UE at, edge adjacent time-domain resource (for example, time-domain resource can be subframe, slot s lot, mini-slot, in symbol extremely It is one of few) on the mutual aliasing in the part Preamble.
According to different covering demands (here, it is not excluded that the demand of other scenes), propose that n times are sent, or, repeating n times The method of RACH Preamble is given below several RACH Preamble and repeats to send, or, multiple (for example, n times) transmission Spatial structure:
There is CP before mode 1:Preamble sequence, has GT after Preamble sequence, and, transmission times or number of repetition For N.
For example, Preamble number of RACH is repeated, or, sending Preamble number of RACH is 2, RACH Preamble spatial structure is illustrated in figure 3 repetition or transmission times as 2 RACH Preamble spatial structure schematic diagram.
Based on mode 1, n times are sent, or, the Preamble sequence used in repeating is similar and different, then may be led It causes to send, and/or, detection, or, the mode of reception is different.It can be with developing out following two distressed structure by above structure:
There is CP before mode 1-A:Preamble sequence, has GT after Preamble sequence, and, transmission times or repetition time Number is N, and, Preamble sequence is identical.
For example, Preamble number of RACH is repeated, or, sending Preamble number of RACH is 2, and, Preamble sequence Arrange identical (for example, Sequence sequence X).Its RACH Preamble spatial structure, is illustrated in figure 4 repetition or transmission times For the identical RACH Preamble spatial structure schematic diagram of 2 and Preamble sequence.
There is CP before mode 1-B:Preamble sequence, has GT after Preamble sequence, and, transmission times or repetition time Number is N, and, Preamble sequence is different.
For example, Preamble number of RACH is repeated, or, sending Preamble number of RACH is 2, and, Preamble sequence Arrange different (for example, Sequence sequence X, Sequence sequence Y).Its RACH Preamble spatial structure, is illustrated in figure 5 It repeats or transmission times is the different RACH Preamble spatial structure schematic diagram of 2 and Preamble sequence.
Mode 2: having CP, have GT after the Preamble sequence of end transmission before initial transmission Preamble sequence, in Between Preamble between only GT, or, CP, and, transmission times or number of repetition are N.
For example, Preamble number of RACH is repeated, or, sending Preamble number of RACH is 2, and, it omits GT or CP between Preamble sequence, RACH Preamble spatial structure, is illustrated in figure 6 repetition or transmission times is 2, and omit the RACH Preamble spatial structure schematic diagram of the GT or CP between Preamble sequence.
Based on mode 2, n times are sent, or, the Preamble sequence used in repeating is similar and different, then may be led It causes to send, and/or, detection, or, the mode of reception is different.Following two distressed structure can be developed out by above structure:
There is CP before mode 2-A: initial transmission Preamble sequence, have GT after the Preamble sequence of end transmission, Only GT between intermediate Preamble, or, CP, and, transmission times or number of repetition are N, and, Preamble sequence is identical.
For example, Preamble number of RACH is repeated, or, sending Preamble number of RACH is 2, and, Preamble sequence Arrange identical (for example, Sequence sequence X).Its RACH Preamble spatial structure, is illustrated in figure 7 repetition or transmission times Only have GT or the identical RACH Preamble spatial structure schematic diagram of CP and Preamble sequence between 2 and Preamble.
There is CP before mode 2-B: initial transmission Preamble sequence, have GT after the Preamble sequence of end transmission, Only GT between intermediate Preamble, or, CP, and, transmission times or number of repetition are N, and, Preamble sequence is different.
For example, Preamble number of RACH is repeated, or, sending Preamble number of RACH is 2, and, Preamble sequence Arrange different (for example, Sequence sequence X, Sequence sequence Y).Its RACH Preamble spatial structure, is illustrated in figure 8 It repeats or transmission times is for 2 and Preamble between when the only GT or different RACH Preamble of CP and Preamble sequence Domain structure schematic diagram.
Mode 3: having CP, have GT after the Preamble sequence of end transmission before initial transmission Preamble sequence, in Between Preamble between omit GT, and, CP, and, transmission times or number of repetition are N.
For example, Preamble number of RACH is repeated, or, sending Preamble number of RACH is 2, and, it omits GT and CP between Preamble sequence, RACH Preamble spatial structure, is illustrated in figure 9 repetition or transmission times is 2, and omit the RACH Preamble spatial structure schematic diagram of the GT and CP between Preamble sequence.This structure is similar to Preamble format 2 and format 3 (for example, Preamble is repeated 2 times) in existing LTE, the difference is that being occupied in time domain Resource it is different, for example, Preambleformat is using subframe as basic unit on LTE, and Preamble format can in NR With time slot, and or, M symbol (M is small fish or to be equal to 6/7 more than or equal to 1, or, 12/14, alternatively referred to as mini-slot hours Gap) it is basic unit.
Based on mode 3, n times are sent, or, the Preamble sequence used in repeating is similar and different, then may be led It causes to send, and/or, detection, or, the mode of reception is different.Following two distressed structure can be developed out by above structure:
There is CP before mode 3-A: initial transmission Preamble sequence, have GT after the Preamble sequence of end transmission, GT is omitted between intermediate Preamble, and, CP, and, transmission times or number of repetition are N, and, Preamble sequence is identical.
For example, Preamble number of RACH is repeated, or, sending Preamble number of RACH is 2, and, Preamble sequence Arrange identical (for example, Sequence sequence X).Its RACH Preamble spatial structure is as shown in Figure 10 repetition or transmission times GT and the identical RACH Preamble spatial structure schematic diagram of CP and Preamble sequence are omitted between 2 and Preamble.
There is CP before mode 3-B: initial transmission Preamble sequence, have GT after the Preamble sequence of end transmission, GT is omitted between intermediate Preamble, and, CP, and, transmission times or number of repetition are N, and, Preamble sequence is different.
For example, Preamble number of RACH is repeated, or, sending Preamble number of RACH is 2, and, Preamble sequence Arrange different (for example, Sequence sequence X, Sequence sequence Y).Its RACH Preamble spatial structure is as shown in figure 11 When repetition or transmission times omit the different RACH Preamble of GT and CP and Preamble sequence between 2 and Preamble Domain structure schematic diagram.
In the present embodiment, the Preamble spatial structure, and/or, Preamble sequence, and/or, Preamble is accounted for Number of symbols, and/or, Preamble repetition/transmission times can be obtained by least one of mode: pass through high level RRC signaling configuration by physical layer DCI signaling (for example, PDCCHorder) or, configured, or, passing through remaining system information The configuration of (Remaining System Information, RMSI) notice, predefines.
Embodiment two: illustrating the time-domain resource of Preamble, and, frequency domain resource divides.
It in the present embodiment, provides and is used for transmission time-domain resource used in information (for example, Preamble), in frequency domain resource extremely It is one of few.
The frequency domain resource for being used for transmission information (for example, Preamble), or, frequency domain resource set can be by following One of mode determine:
Mode one: according to frequency offset amount noffset, send information (for example, Preamble) occupied frequency domain resourceSubcarrier spacing SCS, frequency domain resourceNumber, at least one of bandwidth determines.
Mode two: it is determined according to scheduled division.By bandwidth (for example, frequency hopping bandwidth, system bandwidth) according to predetermined manner Being divided into K size isResource unit;Alternatively, according to frequency offset amount noffse tStart, length is frequency hopping bandwidth Resource be divided into K size and beResource unit.
Wherein, ready-portioned K available frequency domain resource, or, resource in frequency domain resource set, according to PRB call number from most It is small to be successively labeled as #0, #1, #2, #3 ..., #K-1 to maximum.Wherein, subcarrier spacing is different, and corresponding transmission information accounts for Frequency domain resourceIt is different.For example, for subcarrier spacing be 1.25KHz, send information (for example, Preamble) occupied frequency domain resource(the PRB number occupied) (corresponding can also be converted into occupancy for 6 RE number, or, number of sub-bands).And be 5KHz for subcarrier spacing, then it is occupied to send information (for example, Preamble) Frequency domain resource(the PRB number occupied) is 24.Note: the subcarrier spacing can for 1.25kHz, 2.5kHz, One of 5kHz, 7.5kHz, 10kHz, 15kHz, 20kHz, 30kHz, 60kHz, 120kHz, 240kHz.The subcarrier spacing, It can be summarized as 1.25*n, or, 15*n, wherein n is the integer more than or equal to 1.
Further, the frequency offset amount noffset, send information (for example, Preamble) occupied frequency domain resourceSubcarrier spacing SCS, frequency domain resourceNumber, at least one of bandwidth, can by it is following at least it One mode obtains: it is configured by high-rise RRC signaling and is configured or, passing through physical layer DCI signaling (for example, PDCCH order), or, It notifies to configure by remaining system information (Remaining SystemInformation, RMSI), predefine.
The position starting PRB on frequency domain, can determine in the following way:
Situation one: for PRACH resource in the case of continuous on frequency domain, the calculating of the starting position PRB on frequency domain is as follows:
Formula one:Or;
Formula two:
Wherein, formula one indicates PRACH resource successively frequency domain initial position determined by the direction from low frequency to high frequency. And formula is second is that PRACH resource successively frequency domain initial position determined by the direction from high frequency to low frequency.S is subcarrier spacing; noffsetFor offset on the frequency domain of configuration, noffsetFor more than or equal to 0, and, it is less than or equal to's Value.Here, noffsetIt can refer to the offset of PRB;The corresponding PRB number of frequency hopping bandwidth can be indicated, alternatively, system The corresponding PRB number of bandwidth;Indicate that subcarrier spacing is the PRB number of the corresponding PRACH resource occupation of 1.25kHz; Ki is the index of PRACH resource on frequency domain, and value range is [0, K-1], and K is the number of PRACH resource on frequency domain.
Situation two: the feelings for PRACH resource distribution at the both ends (" low high frequency position is interlocked ") of bandwidth or frequency hopping bandwidth The calculating of condition, the starting position PRB on frequency domain is as follows:
Situation three: for PRACH resource distribution bandwidth or frequency hopping bandwidth both ends (" a part of low, another part high frequency Position ") the case where, the calculating of the starting position PRB on frequency domain is as follows: M is that one end of bandwidth Hu frequency hopping bandwidth is distributed PRACH and connects The number of continuous resource.M is the half of K.
Can be equal for the length of Preamble sequence described in embodiment one, or, differing.The Preamble exists Can be formed with by least one of in time domain: Q subframe, Q time slot, Q symbol, Q mini-slot (small time slot, it is described Small time slot is made of P OFDM symbol, P be more than or equal to 1, and/or, the positive integer less than or equal to 6/7/12/14).Q For the positive integer more than or equal to 1.
Before introducing Frequency Hopping pattern, the concept of the time domain granularity of lower frequency hopping is first introduced.The time domain grain of the frequency hopping Degree refers to, when signal specific/channel (for example, Preamble) frequency hopping, the frequency domain resource position in Y time-domain resource is identical 's.For example, Y is 2, Preamble repetition, or, transmission times is 4, then when third Preamble starts transmission, on frequency domain Realize frequency hopping.That is the corresponding frequency domain position of the first, second Preamble is identical, and third, the corresponding frequency domain of the 4th Preamble Position is identical, but time domain granularity is the frequency domain of 2 corresponding first, second Preamble, with third, the 4th Preamble correspondence Frequency domain position it is different, i.e., frequency domain jumps.Similarly, Y can also be indicated in Y OFDM symbol, or, subframe, or, on time slot Frequency domain resource position be identical.
Following embodiment will provide transmission/repetition n times Preamble transmission method, that is, the design of frequency pattern.Its In, the n times of RACH Preamble are sent, or, n times repeat to be can be in the time domain continuously, or, being also possible to discrete (alternatively referred to as discrete in time domain).N is the positive integer more than or equal to 1.
Embodiment three: it is specific introduce by Preamble index determine Frequency Hopping position in the way of.
The present embodiment provides a kind of frequency pattern method, i.e., the frequency of frequency hopping is determined according to the Preamble index that UE is sent Domain position.Wherein, Preamble index can be the preceding primary or the last index for sending Preamble, or, preceding primary Or first Preamble index in the last time domain granularity Y for sending Preamble, or, preceding primary or the last The last one Preamble index in the time domain granularity Y of Preamble is sent, or, preceding primary or the last transmission The maximum Preamble index of Preamble index in the time domain granularity Y of Preamble, preceding primary or the last transmission The smallest Preamble index of Preamble index in the time domain granularity Y of Preamble, or, initial transmission Preamble index.Note: under the premise of method described in the present embodiment assumes that frequency hopping is enabled, the frequency hopping is based on continuously transmitting Between Preamble, alternatively, between the Preamble format continuously transmitted.
The frequency domain position of the frequency domain position of frequency hopping, the frequency hopping shown with resource index table calculates: utilizing Preambleindex With PRACH number of resources K modulus resulting value.It is denoted as: f=(Preamble index) mod K.Currently, for each cell, The number of Preamble sequence is 64.I.e. the value range of Preamble index is [0,63] or [1,64].It is not generality, It is assumed that the number of Preamble sequence is NUM, then the value range of Preamble index is [0, NIM-1] or [1, NUM].
Mode described in illustration mode one, for example it is assumed that UE is continuous in the time domain or repeats to send Preamble's Times N is 2, and the frequency domain resource for sending Preamble for the first time is that frequency domain resource indexes 0 corresponding resource location, is sent for the first time The index that Preamble is used is 6 for 34, PRACH number of resources K, and it (is single with Preamble number that time domain frequency hopping granularity Y, which is 1, Position, or, occupied with Preamble time-domain resource (for example, the number of symbols that successively Preamble is occupied, or, number of time slot, Or, number of subframes) be unit), Y is 1 one Preamble of expression here, it is based on this, in the way of described in mode one, and UE hair Send the frequency domain position f=34mod 6=4 of second of Preamble.That is to say, UE sends the frequency domain position of second of Preamble It is 4 corresponding resources for PRACH resource index.Wherein, second send Preamble index can with it is preceding once or before Preamble index it is identical, or, different.As shown in figure 12, Figure 12 is provided in the present invention based on previous Preamble Index determine next time Preamble send frequency domain position schematic diagram.Here, PRACH frequency domain resource is compiled according to PRB Number, or, PRACH available resources number is from most as low as highest sequence number consecutively.
Preamble situation is sent when same and/or in frequency domain resource simultaneously for multiple UE, in order to enable these The PRACH frequency domain resource that UE is used when sending Preamble next time is different, then needs to be limited in a period of time and/or frequency domain money The Preamble index that the UE of Preamble is used is sent on source simultaneously.Need to design Preamble and PRACH resource it Between corresponding system, concrete mode is one of following:
Method 1: Preamble sequence is divided into K group, division mode are as follows: (Preamble index) modK resulting value The corresponding Preamble index of respectively 0,1,2,3 ..., K-1 is divided into one group, successively labeled as group #0, organizes #1, organizes # 2 ..., group #K-1.Wherein, the value range of Preamble index is [0, NUM-1] or [1, NUM].
For example it is assumed that value range [0,63] or [1,64] that Preamble sequence number is 64, Preamble index, K is 6, then the Preamble index and PRACH frequency domain resource divided according to 6 resulting value of (Preamble index) mod is indexed Between corresponding relationship, as shown in table 1.Multiple UE are distinguished or detected in order to facilitate base station and send Preamble, then same The Preamble index that multiple UE in PRACH resource are sent should gather from different Preamble index or Group.
Table 1
Method 2: being that NUM Preamble index is divided by numberA group, wherein ability resulting value is upward It is rounded.The Preamble index number for including in each group is K.The value of Preamble index be [0, NIM-1] or [1,NUM].It is assumed here that according to the sequence of index from small to large successively according toA is one group, divides Preamble Index set or group.Wherein, multiple UE are distinguished or detected in order to facilitate base station and send Preamble, then in same PRACH resource On multiple UE send Preamble index should from the same Preamble index gather or group.
For example, Preamble number is 64, PRACH frequency domain resource number is 6, includes 6 according to every group Preamble sequence can be divided into 11 groups.According to Preamble index ascending order, and 2 mode of method successively divides institute Obtain group or set are as follows: Preamble index#0~Preamble index#5 corresponds to group/index of set 0, Preamble Index#6~Preamble index#11 corresponds to group/index of set 1, Preamble index#12~Preamble index# 17 corresponding group/index of set 2, Preamble index#18~Preamble index#23 correspond to group/index of set 3, successively Analogize, Preamble index#60~Preamble index#63 corresponds to group/index of set 10.As shown in table 2.
Table 2
It can be seen that, Preamble index can be divided into as K column in a manner mentioned aboveRow, or,Arrange the matrix of K row.Wherein, according to Preamble index ascending order sequence, the Preamble index successively according to It is written line by line, or, the mode being written column-wise as.For being arranged according to KThe mode that row is written line by line, enters table 2, for convenience Base station is distinguished or is detected multiple UE by frequency domain dimension and sends Preamble, then multiple UE in same PRACH resource are sent Preamble index should from the same Preamble index gather or group, i.e., in same a line Preamble index, and, each UE is using colleague or with group or the Preamble index different in set.Except this it Outside, there are also other modes, and said effect may be implemented, for example, Preamble index#0, can with Preamble index#1, Preamble index#7, Preamble index#13, Preamble index#19, Preamble index#25, Preamble index#31, Preamble index#37, Preamble index#43, Preamble index#49, It is one of any in Preamble index#55, Preamble index#61, and, Preamble index#2, Preamble Index#8, Preamble index#14, Preamble index#20, Preamble index#26, Preamble index# 32, Preamble index#38, Preamble index#44, Preamble index#50, Preamble index#56, It is one of any in Preamble index#62, and, Preamble index#3, Preamble index#9, Preamble Index#15, Preamble index#21, Preamble index#27, Preamble index#33, Preamble Index#39, Preamble index#45, Preamble index#51, Preamble index#57, Preamble It is one of any in index#63, and, Preamble index#4, Preamble index#10, Preamble index#16, Preamble index#22, Preamble index#28, Preamble index#34, Preamble index#40, It is one of any in Preamble index#46, Preamble index#52, Preamble index#58, and, Preamble Index#5, Preamble index#11, Preamble index#17, Preamble index#23, Preamble index# 29, Preamble index#35, Preamble index#41, Preamble index#47, Preamble index#53, It is one of any in Preamble index#59 to divide a group or set into, and so on, similarly, Preamble index#6, Preambleindex#12, Preamble index#18, Preamble index#24, Preamble index#30, Preambleindex#36, Preamble index#42, Preamble index#48, Preamble index#54, Preambleindex#60 can also be by the way of the building group or set of above-mentioned Preamble index#0.Here not another One enumerates.
It further expands, according to Preamble index, and, group number determines the group position of frequency hopping.Equally, in group Mirror-image fashion can also be introduced.Wherein, the division of group is i.e.: on frequency domain, it is assumed that and the number of PRACH frequency domain resource is K, according to PRB index is from being most denoted as resource #0, #1, #2 ..., #K-1 as low as highest sequence number consecutively.Each PRACH resource is in frequency The RB number occupied on domain is related with subcarrier spacing, for example, subcarrier spacing is 1.25kHz, a corresponding PRACH resource is accounted for With 6 PRB.When subcarrier spacing other values, corresponding PRACH resource occupation can be obtained according to certain scaling scale PRB number.It is assumed that time domain frequency hopping granularity Y is 1.K PRACH frequency domain resource is divided into M group, every group of PRACH resource for including Number is K/M.It is 0,1,2,3 ..., M-1 from minimum to maximum sequence number consecutively that M group is indexed according to PRACH frequency domain resource.
Example IV: for application on the basis of three the method for embodiment, detection fuzzy problem is mainly solved.
The present embodiment is an application of three the method for embodiment.Frequency hopping frequency domain is determined by Preamble index Position mode can solve to a certain extent or alleviate detection fuzzy problem.But the mode in the present embodiment is not limited to solve This problem.
It is assumed that the spatial structure that uses of UE transmission Preamble for RACH sequence before CP, the sequence of repetition/transmission n times is not Together, the end for repeating or sending n times sequence introduces GT.Wherein, N is the positive integer more than or equal to 1.N can by it is following it One mode determines: predefined, physical layer DCI signaling, high-rise RRC signaling, RMSI.Wherein, N can also pass through PDCCH order Triggering, and/or, instruction Preamble transmission/duplicate number.It is assumed that repetition/transmission Preamble times N is 2.For this Spatial structure, it will detection fuzzy problem occur.The reason is that, the detection under this structure is divided into two stages, each stage Detect a sequence.If multiple UE are sent simultaneously, for example, first sequence A that UE1 is sent, second sequence B, and UE2 is sent out First sequence sent is C, and second sequence is D, and when detecting in the first stage, base station can detecte sequence A, and, sequence C, in second stage detection, base station detects sequence B, and, sequence D.At this point, the sequence that base station can not determine that UE1 is sent is In AB, AD, CB, CD which.The above problem is equally existed for the detection of UE2.It is assumed here that time domain frequency hopping granularity Y=1.
In response to the above problems, corresponding solution is different under different situations, specific as follows:
Situation 1: it is assumed that the First ray of UE1 and UE2 is different, then by the first Preamble Index, according to certain Relationship determines the frequency domain position of the second sequence of different UE.Certain relationship can be Preamble Index mod K, K are the frequency domain resource number for sending Preamble.The selection for the Preamble index that the UE1 and UE2 of specific simultaneous interpretation are used Mode refers to method 1 in embodiment three, or, method 2, which is not described herein again.
For example, the First ray Preambleindex that the Preamble index of the First ray of UE1 is 12, UE2 is 40, K 6, in the way of (Preamble index) mod K, determine UE1, and, UE2 sends the frequency domain position of second sequence It sets.That is, the corresponding frequency domain resource of 6 resulting value of frequency domain position 12mod 0 that the second sequence of UE1 is sent, i.e. first frequency domain money UE1 sends second sequence on source;The corresponding frequency domain money of 6 resulting value 4 of frequency domain position 40mod that second sequence of UE2 is sent Source, i.e. UE2 sends the second sequence in the 5th frequency domain resource, as shown in figure 13.That is UE1 and UE2 passes through respective Preamble Index obtains the different frequency domain positions for sending the second sequence, so that base station passes through Preamble according to certain relationship Index and, at least one of the frequency domain position that the second sequence is sent, what can be confirmly detected is which UE is sent Preamble。
In order to guarantee the feasibility of the above method, needs to limit the Preamble index that UE1 and UE2 is used and come from difference Set, i.e. the Preamble index of UE1 and UE2 cannot take Preamble Index identical with resulting value after K modulus.Or Person says that these Preamble Index should be the Preamble Index from different set, in respective set, according to Preamble index, and, after particular kind of relationship processing, the corresponding frequency domain position of resulting value is different.
In addition it is also possible to determine the Frequency Hopping position of First ray according to the Preamble index of the second sequence.This Kind mode also can solve detection fuzzy problem.
Situation 2: it is assumed that the First ray of UE1 and UE2 is identical, then it is fuzzy that detection can be solved by way of UE ID Problem.Wherein, a kind of mode is: the frequency domain position of the second sequence is determined using UE ID.Eliminated by frequency domain position difference Detection is fuzzy.Another way utilizes UE ID and the opening relationships of Preamble sequence.
The specific method is as follows: right between UE ID and the frequency domain position of latter sequence (or previous sequence) transmission by establishing It should be related to solution.For example, determining the frequency domain position of the second sequence by UE ID mod K mode.It is assumed that the UE ID of UE1 is 79, The UE ID of UE2 is 369, K 6, then the frequency domain position 79mod 6 of the second sequence of transmission of UE1 is 1, and UE2 sends the second sequence The frequency domain position 369mod 6 of column is 3, as shown in figure 14.I.e. by the frequency domain position of the second sequence, so that base station can be with That distinguish detection is the Preamble that UE1 or UE2 is sent.Difference UE obtains value correspondence according to particular kind of relationship in order to prevent The identical situation of frequency domain position, it is proposed that there is identical Preamble index, and/or, identical time domain and/or frequency domain position are not Evade the identical ID of frequency domain position after handling according to particular kind of relationship with the ID between UE.That is the ID of these UE according to particular kind of relationship at Managing frequency domain position should be different.In other words, these UE should be the UE from different set, in respective set, according to UE ID, and, after particular kind of relationship processing, the corresponding frequency domain position of resulting value is different.
For situation two, another way: multiple UE to send simultaneously configure different frequency domain offsets (for example, Offset direction is consistent), alternatively, identical offset is configured, and different offset directions, to realize what the 2nd Preamble was sent Frequency domain position is different.And then solve detection fuzzy problem.For example, the frequency offset amount of UE1 and UE2 is identical, but the direction deviated Difference, e.g., offset 1, and it is to PRACH frequency domain that UE1, which is to incremental direction 1, the UE2 of offset of PRACH frequency domain resource index, Resource index passs low direction offset 1.Alternatively, UE1 and UE2 configure different offsets, if UE1 is to PRACH frequency domain resource rope Draw incremental direction offset 2, and UE2 indexes progressive offsets 3 to PRACH frequency domain resource.Preferably, offset can make annular offset.
No matter multiple UE of simultaneous interpretation use identical Preamble index, and still, different Preamble index are following One of mode can solve the fuzzy problem of detection to a certain extent.
Mode one: in such a way that Preamble index corresponds to r PRACH resource.Based on this, different UE are used Identical Preamble index simultaneous interpretation situation, can be by way of being respectively configured one of r PRACH resource.Similar, Use the mode of different Preamble index can also be by distributing r for different Preamble index for different UE The mode of one of a PRACH resource.This mode can reduce the fuzzy probability of detection to a certain degree.
For example, (Preamble index) mod (K/r) resulting value PRACH frequency domain resource index corresponding with Ki mod r It is corresponding.The value range of Ki is [0, K-1].For example, Preamble index is that the total number that 8, K is PRACH frequency domain resource is 4, r be the corresponding PRACH frequency domain resource number of Preamble be 2, i.e., according to above-mentioned relation, 8mod (4/2)=0 corresponds to Ki Mod r resulting value is 0 corresponding PRACH frequency domain resource, i.e. PRACH frequency domain resource index 0 and 2.If the UE number of simultaneous interpretation is 2, Different Preamble index situations are used for two UE, then can be maximum according to Preamble index, or, it is minimum, it is right Maximum should be indexed in candidate PRACH resource collection, or, the smallest position, alternatively, the corresponding frequency domain position of predetermined manner, or, Physical layer DCI signaling indicates corresponding frequency domain position, or, high-rise RRC signaling instruction, alternatively, RMSI indicates corresponding frequency domain position It sets.
The frequency domain position that frequency hopping is determined from frequency domain position dimension will be mainly provided in the following examples, or, frequency pattern Method.
Embodiment five:
The present embodiment provides a kind of mode of the frequency pattern of constant offset amount offset.
On frequency domain, it is assumed that the number of PRACH frequency domain resource be K, according to PRB index from most as low as highest sequence successively Number is denoted as resource #0, #1, #2 ..., #K-1.The RB number that each PRACH resource occupies on frequency domain has with subcarrier spacing It closes, for example, subcarrier spacing is 1.25kHz, corresponding 6 PRB of a PRACH resource occupation.When subcarrier spacing other values, The PRB number of corresponding PRACH resource occupation can be obtained according to certain scaling scale.It is assumed that time domain frequency hopping granularity Y is 1.
The frequency pattern mode of constant offset amount offset, calculation are as follows: (i+a × offset) modK.Wherein, a Value be 0, or, 1.A is 0 expression not frequency hopping, and a is 1 expression frequency hopping.I is preceding primary the last or initial transmission The frequency domain resource location index of Preamble, i value are [0, K-1].Offset is the offset as unit of PRACH frequency domain resource Value, offset value are the positive integer more than or equal to 0.
For example it is assumed that UE is continuous in the time domain or the times N that repeats to send Preamble is 2, send for the first time The frequency domain resource of Preamble is that frequency domain resource indexes 0 corresponding resource location, i.e. i is that 0, PRACH number of resources K is 6, time domain Frequency hopping granularity Y is 1, and it is+1 that Y, which is 1 expression one Preamble, offset 4, a, here, at this point, according to (i+a × offset) The frequency domain resource index of modK=(0+1 × 4) mod6=4, that is, frequency hopping is the corresponding frequency domain resource position of PRACH resource index 4. As shown in figure 15.In the example, for Y as unit of Preamble number, Y can also be with the time-domain resource (example of Preamble occupancy Such as, the number of symbols that successively Preamble is occupied, or, number of time slot, or, number of subframes is unit).
Alternatively, the frequency pattern mode of constant offset amount offset, calculation are as follows: i+a × offset, or, i-a × offset.It is actually the mode for showing " belt " circulation offset under this mode.Wherein, the value of a is 0, or, 1.a Not frequency hopping is indicated for 0, and a is 1 expression frequency hopping.In addition, a also illustrates that "+" positive value, alternatively, "-" negative value.A is that positive value is indicated according to frequency The direction of domain resource index maximum (forward direction), a are that negative value indicates to index minimum (reversed) direction according to frequency domain resource.I is previous The secondary or the last frequency domain resource location index for sending Preamble, i value are [0, K-1].Offset is with frequency domain resource For the deviant of unit, offset value is the positive integer more than or equal to 0.
For example it is assumed that UE is continuous in the time domain or the times N that repeats to send Preamble is 2, send for the first time The frequency domain resource of Preamble is that frequency domain resource indexes 0 corresponding resource location, i.e. i is that 0, PRACH number of resources K is 6, time domain Frequency hopping granularity Y is 1, and it is+1 that Y, which is 1 expression one Preamble, offset 4, a, here, at this point, according to i+a × offset=0 + 1 × 4=4 indexes maximum (forward direction) according to frequency domain resource that is, since the frequency domain resource position of PRACH frequency domain resource index 0 Direction offset 4, corresponding PRACH frequency domain resource be frequency hopping frequency domain resource position (such as PRACH resource index 4).However, such as Fruit a is -1, then hopping position is since the frequency domain resource position of PRACH frequency domain resource index 0, most according to frequency domain resource index Small (reversed) direction deviates 4 corresponding PRACH frequency domain resources (such as PRACH resource index 2), as shown in figure 16.In the example, Y as unit of Preamble number, Y can also with Preamble occupy time-domain resource (for example, successively Preamble occupy Number of symbols, or, number of time slot, or, number of subframes) be unit)
One special circumstances: sending Preamble, or, duplicate number is greater than 2, time domain frequency hopping granularity Y is less than Preamble is sent or number of repetition N, and the frequency domain resource position of frequency hopping is all based on the initial frequency domain resource for sending Preamble In the case that position determines, for UE when executing the h times frequency hopping, the frequency domain resource position (indexing) of frequency hopping is (i+a × (h- 1) × offset) modK, or, (i-a × (h-1) × offset) modK, or, i+a × (h-1) × offset, or, i-a × (h- 1)×offset.Here Parameters in Formula meaning is same as above, and which is not described herein again.Briefly, frequency hopping frequency domain resource position is really It is fixed, it depends primarily on based on the frequency domain position for sending Preamble before, and, offset offset value, the PRACH frequency of configuration Domain number of resources.Alternatively, a preceding hopping position can also be based on, current frequency hopping frequency is determined according to constant offset amount offset Domain position, for example, i+1=(i+a × offset) modK, or, i+1=i+a × offset, or, i+1=i-a × offset.
For example it is assumed that UE is continuous in the time domain or the times N that repeats to send Preamble is 4, send for the first time The frequency domain resource of Preamble is that frequency domain resource indexes 0 corresponding resource location, i.e. i is that 0, PRACH number of resources K is 6, time domain Frequency hopping granularity Y is 1, and Y indicates that a Preamble, offset 2, each hopping position are all based on initially for 1 here Preamble sends corresponding PRACH resource index, a 1, then according to i+a × (h-1) × offset formula, gained for the first time, Second, the frequency domain resource position of third time frequency hopping is followed successively by PRACH frequency domain resource index 2,4,0.
If frequency hopping frequency domain resource position is based on preceding primary, or, successively sending the corresponding frequency domain money of Preamble recently Source index, then can calculate acquisition according to the method or formula mentioned in the present embodiment.
Constant offset amount, or, the whether enabled a of frequency hopping, can be determined by least one of mode: it is predefined, it is high-rise RRC signaling, RMSI, physical layer DCI signaling.
Further, in this embodiment can not also introduce frequency hopping in the formula enables switch a.
The present embodiment the method further expands, it can constant offset amount offset is substituted for random function. For example, random function rand, Binomial Distributing Function etc..
Embodiment six:
The present embodiment provides a kind of frequency pattern mode.
On frequency domain, it is assumed that the number of PRACH frequency domain resource be K, according to PRB index from most as low as highest sequence successively Number is denoted as resource #0, #1, #2 ..., #K-1.The PRB number and subcarrier spacing that each PRACH resource occupies on frequency domain It is related, for example, subcarrier spacing is 1.25kHz, corresponding 6 PRB of a PRACH resource occupation.When subcarrier spacing other values When, the PRB number of corresponding PRACH resource occupation can be obtained according to certain scaling scale.It is assumed that time domain frequency hopping granularity Y is 1.K PRACH frequency domain resource is divided into M group, every group of PRACH number of resources for including is K/M.M group is provided according to PRACH frequency domain Source index is 0,1,2,3 ..., M-1 from minimum to maximum sequence number consecutively.Frequency Hopping granularity is preferably+j/Mi, or,- The value range of j/Mi, Mi are [1, M], and j is the integer less than or equal to Mi, wherein "+" positive value indicates to become larger to group # (forward direction) direction is jumped, and "-" negative value indicates (reversed) the direction jump that becomes smaller to group #.
Based on group, offset between group organizes bias internal amount, if at least one of mirror image determines the frequency domain resource position of frequency hopping It sets.Wherein, bias internal amount is organized, and, the direction of mirror image can also have forward direction, or, reversed point.
Described group, offset between group organizes bias internal amount, if mirror image, if frequency hopping, subcarrier spacing, PRACH frequency domain money Source number, corresponding relationship between PRACH resource and group, the position time domain frequency hopping granularity Y, PRACH resource initial p RB determine PRACH At least one of offset of resource can be determined by least one of mode: predefined, high-rise RRC signaling, RMSI, object Manage layer DCI signaling.
For example, UE is continuous in the time domain or the times N that repeats to send Preamble is 2, time domain frequency hopping granularity Y is 1, here Y is that the frequency domain resource number of 1 expression one Preamble, PRACH is 10,10 PRACH resources is divided into 5 groups, each It include 2 PRACH frequency domain resources in group, it is assumed that the PRACH resource that Preamble is sent is located in second group (number is since 0) First PRACH resource, frequency hopping are enabled, the frequency domain granularity of frequency hopping be 1/5 (1/5 indicates that frequency hopping dynamics is one in 5 groups, I.e. 1) granularity is, wherein positive value indicates (forward direction) the direction jump that becomes larger to group #, and negative value indicates (reversed) side that becomes smaller to group # To jump, and mirror image, group bias internal amount are 0, and as shown in figure 17, the frequency domain resource position of frequency hopping is second in third group PRACH resource, i.e., corresponding PRACH resource index are 7.If not mirror image, the frequency domain resource position of frequency hopping is third group In first PRACH resource, i.e., corresponding PRACH resource index be 6.Here mirror image can refer to mirror image in group.
It is to be understood that the division of group may be not necessarily limited to number sequence from small to large according to PRACH resource index, The PRACH number of resources for including according to every group is divided, other index PRACH frequency domain resource according to regularly arranged stroke certain The group divided is applied equally to this.It is not limited to the mode of division group described in the present embodiment.
Further, times N that is continuous in the time domain for UE or repeating to send Preamble is greater than 2 situations, frequency hopping frequency Domain position can be indexed according to the PRACH frequency domain resource where preceding primary the last or initial transmission Preamble, or, Group index where Preamble is reference.
Here it is possible to PRACH frequency domain resource index be sent by initial p reamble, or, what initial p reamble was sent Initial position is deviated, and, at least one of PRB number that PRACH frequency domain resource occupies determines which group be currently located at, in group At least one of which PRACH resource.
Embodiment seven:
The present embodiment provides a kind of mode of frequency hopping.
UE sends the frequency domain resource of Preamble, can be relative to the last or preceding primary frequency for sending Preamble Domain position.That is the calculation formula of hopping position are as follows: f (i+1)=(a × f (i)+b) modK, or, (a × f (i)2+b)modK.Its In, f (i) is the frequency domain position of the last frequency hopping, or, the preceding primary frequency domain position for sending Preamble, a, b are prime number, and K is The number of available frequency domain resource.In addition, f (i) also illustrates that the initial frequency domain position for sending Preamble.
For example it is assumed that Preamble transmission times, or, iterative transfer times N is 6, time domain frequency hopping granularity Y is 1, K 8, f It (i) be frequency domain position index is 3 corresponding frequency domain resources, a, b can be 2,3,5,7.It is assumed that a=3, b=7, hopping position (a × f (i)+b) modK=(3 × 3+7) mod8=0, i.e., the corresponding frequency domain resource location index of current frequency hopping is 0.Next time, it jumps The determination of frequency position is based on a preceding hopping position 0, it is assumed that the constant situation of the value of a and b (determines hopping position each At least one of a, b of use can change, or, constant), then (a × f (i)+b) modK=(3 × 0+7) mod8=7, that is, work as The corresponding frequency domain position index of preceding frequency hopping is 7.Next time, the determination of hopping position, it is assumed that the constant situation of the value of a and b ( At least one of a, the b for determining that hopping position uses every time can change, or, constant), then (a × f (i)+b) modK=(3 × 7 + 7) mod8=4.And so on, the 4th, and, the corresponding resource location index of the frequency domain position of the 5th frequency hopping is followed successively by 3, With 0.As described in Figure 18.In addition, the value of a and b can change when calculating hopping position every time.
It further expands, it can be according to the group # where PRACH frequency domain resource, according to f (i+1)=(a × f (i)+b) ModK, or, (a × f (i)2+ b) modK, wherein f (i) or preceding primary/the last PRACH for sending Preamble Group # where frequency domain resource, K expression group sum.Further, mirror-image fashion can be introduced in group.It is assumed that PRACH frequency domain provides The number in source is K, according to PRB index from being most denoted as resource #0, #1, #2 ..., #K-1 as low as highest sequence number consecutively.Often The PRB number that a PRACH resource occupies on frequency domain is related with subcarrier spacing, for example, subcarrier spacing is 1.25kHz, it is right Answer 6 PRB of a PRACH resource occupation., can be according to certain scaling scale when subcarrier spacing other values, acquisition pair Answer the PRB number of PRACH resource occupation.K PRACH frequency domain resource is divided into M group, every group of PRACH number of resources for including For K/M.It is 0,1,2,3 ..., M-1 from minimum to maximum sequence number consecutively that M group is indexed according to PRACH frequency domain resource.
Another way, f (i) can also indicate that Preamble Index, the Preamble Index can be previous The secondary or the last Index for sending Preamble, or, the Preambleindex of one of Preamble has been sent, or, just Originate the Index for sending Preamble to use.Pass through (a × f (i)2+ b) modK or (a × f (i)+b) modK determine current frequency hopping Frequency domain position.
It further expands, f (i) indicates Preamble Index, passes through above-mentioned formula (a × f (i)2+ b) modK or (a × f (i)+b) modK determines the group # of frequency hopping.K expression group sum.Further, mirror-image fashion can be introduced in group.It is assumed that The number of PRACH frequency domain resource is K, according to PRB index from being most denoted as resource #0, #1, # as low as highest sequence number consecutively 2 ..., #K-1.The RB number that each PRACH resource occupies on frequency domain is related with subcarrier spacing, for example, subcarrier spacing For 1.25kHz, corresponding 6 PRB of a PRACH resource occupation.It, can be according to certain scaling when subcarrier spacing other values Scale obtains the PRB number of corresponding PRACH resource occupation.K PRACH frequency domain resource is divided into M group, every group includes PRACH number of resources is K/M.It is 0,1,2 from minimum to maximum sequence number consecutively that M group is indexed according to PRACH frequency domain resource, 3 ..., M-1.
Another way, f (i) can also indicate the number of the transmission Preamble before this transmission Preamble, or, The number of frequency hopping.It, can be according to formula (a × f (i) based on this2+ b) modK or (a × f (i)+b) modK determine current frequency hopping Frequency domain position.
Embodiment eight:
The present embodiment provides UE grouping, and, the corresponding relationship between the UE grouping and Preamble.
Mode one: UE is corresponding in turn to Preamble according to UE ID and PRACH frequency domain resource number K modulus resulting value in organizing Deck label.Wherein, UE group divide according to every group of K UE, be in turn divided into a group of [UE ID/K], successively be labeled as 0,1 ..., [UE ID/K]-1。
For example, as shown in table 3, it is assumed that there is 12 UE, UE ID to be followed successively by #0, #1, #2, #3 ..., #11, PRACH frequency Domain number of resources K is 6,12 UE is successively divided into 2 groups according to the rounding of UE ID/K resulting value, wherein group UE is corresponding for the first time UE collection be combined into { #0, #1, #2, #3, #4, #5 }, the corresponding UE collection of second group of UE is combined into { #6, #7, #8, #9, #10, #11 }.Its In, the corresponding number of UE group is followed successively by 0,1 ..., [UE ID/K] -1.Further, it is used according to difference UE in UE group Preamble index comes from the Preamble index of different Preamble groups.UE ID mod K is corresponding in organizing Preamble index group index.Wherein, Preamble index group and Preamble index relationship are referring in embodiment three Table 1.This have the advantage that detection fuzzy problem can be prevented or be reduced.
Table 3
Two: UE group # of mode is corresponding with Preamble group #.Wherein, UE group is divided according to every group of K UE, is successively drawn It is divided into a group of [UE ID/K], is successively labeled as 0,1 ..., [UE ID/K] -1.
As shown in table 4, it is assumed that there is 12 UE, UE ID to be followed successively by #0, #1, #2, #3 ..., #11, PRACH frequency domain resource Number K is 6,12 UE is successively divided into 2 groups according to the rounding of UE ID/K resulting value, wherein the corresponding UE collection of group UE for the first time It is combined into { #0, #1, #2, #3, #4, #5 }, the corresponding UE collection of second group of UE is combined into { #6, #7, #8, #9, #10, #11 }.Its UE group is compiled Number correspond to Preamble group #.Further, UE in organizing, selects Preamble in corresponding Preamble group Index, and do not select it is primary, organize in Preamble index set just reject the Preamble index selected, it is non-selected The UE of Preamble index will be selected in remaining Preamble index in the Preamble group.Further, Preamble index group and Preamble index relationship are referring to table 2 in embodiment three.
Table 4
Embodiment nine:
It is the case where for carrying out PRACH random access procedure on SUL (Supplement Uplink) carrier wave, described The configuration information of RACH can be the configuration information of the RACH on independence and NR conventional carrier (for example, 3.5GHz carrier wave), can also Be for NR conventional carrier, and, SUL carrier wave configures a set of RACH configuration information.Specific RACH configuration information can be by remaining Remaining system information RMSI, minimum system information MinimumSI, PDCCH DCI information, RRC signaling, in Predefined information at least it One obtains.
Wherein, configuration information includes at least one of: the starting PRB of PRACH frequency domain resource, subcarrier spacing SCS, The spatial structure of Preamble format, Preamble repetition or the repetition of transmission times N, Preamble or transmission n times, Number of symbols, frequency hopping time domain granularity Y, the PRACH frequency domain resource number K, frequency hopping bandwidth, frequency domain constant offset of Preamble occupancy Amount, the offset granularity are PRACH frequency domain resource granularity, or, group granularity, mirror image are enabled, frequency hopping is enabled, Preamble Corresponding relationship, prime number a, b, i.e. a between index and PRACH resource, b are the prime number of K, the number of PRACH resource group, PRACH PRACH number of resources, PRACH time-domain resource, the PRACH frequency domain resource, the instruction letter for triggering PRACH transmission for including in resource group Breath, offset, send power, power adjustment or adjustment duration set, threshold value, metric parameter (RSRP or RSRQ or RSSI), for the offset of metric parameter, carrier wave instruction, the starting point of RAR time window, the duration of RAR time window, NR- PUSCH configuration information, Msg3HARQ transmission maximum times, contention resolved timer length, Preamble index, Preamble group #.
The offset can be the offset of at least one of time-domain resource, frequency domain resource, threshold value.Threshold value can also So as to share a threshold value on different carrier waves, it can be different carrier waves and configure different threshold values.
Further, enterprising in the normal carrier wave of NR in order to prevent while carrying out the access operation of PRACH on SUL Other uplinks of row, or, downstream operation, then suggest that SUL and NR conventional carrier shares a set of PRACH configuration information, alternatively, The resource of PRACH configures identical on different carrier waves.
Further, when multiple carrier waves are configured, for example, one is NR 3.5GHz carrier wave, another is SUL carrier wave, this When, different UE send Preamble in the identical time domain and frequency domain position on different carrier waves, when Preamble index phase Meanwhile according to RA-RNTI mode is calculated in existing LTE, the corresponding RNTI of Preamble that the difference UE is sent is identical, this When, in order to solve this problem, it is proposed that UE ID, at least one of carrier wave ID information are introduced in calculating RA-RNTI.
Embodiment ten:
The present embodiment provides the processing mode of Msg4 message.
It can be routine UL carrier wave by RMSI for conventional UL carrier wave and supplement up-link carrier SUL, and, SUL is carried Wave is respectively provided for PRACH configuration message needed for carrying out random access procedure.
Access if random access procedure accesses on SUL carrier wave, for base station in Msg4 message in addition to notifying UE routine Success etc. is except message, can also notify UE at least one of information: Physical Uplink Shared Channel PUSCH resource, physically Row control channel PUCCH configuration information, detection reference signal SRS configuration information.In addition, also can indicate that NR in Msg4 message At least one of PUSCH configuration information, PUCCH configuration information, SRS configuration information on regular upstream carrier wave.The NR is routinely carried Configuration information on wave can be optional configuration, or, forcing configuration.
If random access procedure accesses on SUL carrier wave, Msg4 is upper other than notifying to the UE access message such as successfully, also The Physical Uplink Shared Channel PUSCH resource on NR regular upstream carrier wave, Physical Uplink Control Channel PUCCH can be notified to match At least one of confidence breath, detection reference signal SRS configuration information.
If initial random access procedure accesses on NR routine UL carrier wave, in Msg4 message, in addition to notice UE is conventional Be successfully accessed etc. except message, can also notify UE at least one of information: Physical Uplink Shared Channel PUSCH resource, Physical Uplink Control Channel PUCCH configuration information, detection reference signal SRS configuration information.In addition, base station can also pass through Msg4 At least one of PUSCH configuration information, PUCCH configuration information, SRS configuration information on message arrangement SUL carrier wave.The SUL is carried Configuration information on wave can be optional configuration, or, forcing configuration.
If random access procedure accesses on the up-link carrier of NR routine, Msg4 is upper successfully etc. to disappear in addition to notice to UE access Except breath, Physical Uplink Shared Channel PUSCH resource on SUL carrier wave, Physical Uplink Control Channel PUCCH can also be notified At least one of configuration information, detection reference signal SRS configuration information.
Wherein, PUCCH configuration information includes at least one of: PUCCH format information, PUCCH resource position, PUCCH It is enabled to occupy symbol, frequency hopping.SRS configuration information includes at least one of: occupying number of symbols, period, character position, period Bias internal amount, comb teeth, bandwidth, frequency hopping are enabled.
Above-mentioned configuration information can be configured by remaining minimum system message RMSI.
Embodiment 11:
The processing mode of random access failure in the present embodiment.
Situation one: for the up-link carrier and SUL carrier wave of NR routine, UE according to certain rule select it is one of as The access carrier of random access procedure.If UE random access procedure on the up-link carrier of selection fails, then another is selected Up-link carrier re-starts random access procedure.
Situation two: for main carrier and secondary carrier, random access procedure executes on main carrier.If on main carrier with Machine access failure, then UE selects secondary carrier as the carrier wave for re-starting random access procedure.For example, main carrier is NR conventional Up-link carrier, secondary carrier are SUL carrier wave.
Wherein, for multiple SUL carrier waves the case where.
Case1:UE is that random access procedure is executed on the up-link carrier of NR routine by certain rule selection, still Random access procedure is executed on SUL carrier wave.If selecting carrier wave of the SUL as random access procedure, multiple SUL are carried Wave, in initial random access procedure, UE can only execute random access procedure on a specific SUL carrier wave.Wherein, described Specific SUL carrier wave is available to be allocated to UE by base station or RSMI.And for connected state, it can be increased with by the carrier wave under CA framework Add, or, deleting so that UE there are multiple SUL carrier waves available., whereas if selection NR regular upstream carrier wave, then UE is in NR routine Random access procedure is carried out on up-link carrier.
Case2:UE is that random access procedure is executed on the up-link carrier of NR routine by certain rule selection, still Random access procedure is executed on SUL carrier wave.If selecting carrier wave of the SUL as random access procedure, multiple SUL are carried Wave, in initial random access procedure, UE can see multiple SUL carrier waves, but need by way of multiple thresholdings, and determination is more In a SUL carrier wave which SUL the carrier wave as random access procedure.For example, setting thresholding T1, and, thresholding T2, only carrier wave SUL carrier wave of the RSRP value of upper measurement between T1 and T2 could be as the carrier wave of random access procedure.And for connected state, it can With the addition of carrier wave, or, deleting so that UE has multiple SUL carrier waves available., whereas if selection NR regular upstream carrier wave, then UE Random access procedure is carried out on the up-link carrier of NR routine.
For selecting NR regular upstream carrier wave, still, the rule of SUL carrier wave, the rule is according to thresholding judgement choosing The up-link carrier of NR routine is selected, still, carrier wave of the SUL carrier wave as random access.For example, the RSRP detected on carrier wave substantially Value determines which carrier wave selected compared with threshold value.Threshold value can be configured by RMSI.For example, RSRP is greater than threshold value, then Select NR conventional carrier.Less than threshold value, then SUL carrier wave is selected.Vice versa.The RSRP can refer to that NR regular upstream carries The RSRP measured on wave can also refer to the RSRP of the measurement on SUL carrier wave.Determine which SUL carrier wave selected except through thresholding Mode except, can also by way of random selection, alternatively, base station or RMSI instruction mode.
If UE carries out random access failure on the SUL carrier wave of selection, can be executed according to following one mode:
Mode one: the case where for by multiple SUL carrier waves, then UE selects the carrier wave of high priority on SUL carrier wave, alternatively, The carrier wave of high priority, NR regular upstream carrier wave, or, main carrier carries out random access procedure again.
Mode two: UE selects the up-link carrier of NR routine, or, main carrier carries out random access procedure again.
Mode three: UE carries out random access procedure again according to the up-link carrier that base station is specified.
Wherein, the priority between NR regular upstream carrier wave, SUL carrier wave is successively successively decreased or is incremented by.For the feelings of multiple SUL Condition, there is also certain priority before by multiple SUL.For major-minor carrier wave, the priority of main carrier is higher than secondary carrier.
Embodiment 12:
The present embodiment provides random access procedure under a kind of handoff scenario.
When a switchover occurs, UE executes the carrier wave of random access procedure, can be at least one of:
The carrier wave of the default random access of mode one: UE is the NR regular upstream carrier wave or SUL carrier wave after switching in cell.
Mode two: the carrier wave of random access is and carries out random access procedure carrier wave same type in former cell after switching Carrier wave.For example, random access procedure is NR regular upstream carrier wave in former cell, then random access just selects in new cell after switching NR regular upstream carrier wave., whereas if random access procedure is SUL in former cell, then random access just selects newly after switching SUL in cell.
Mode three: the random access carrier wave after switching is the main carrier after switching in cell, alternatively, secondary carrier.
Mode four: by former base station notice UE after handover which carrier wave in cell (for example, NR regular upstream carrier wave, Or, SUL carrier wave, or, one in multiple SUL carrier waves) carry out random access procedure.
After switching, the case where there are multiple SUL in cell, then can finally be held by the selection of multiple thresholdings determination The carrier wave of row random access procedure, alternatively, can be specified by former cell, alternatively, having, this cell is specified, alternatively, random selection one It is a.
One special case has the case where certain priority for multiple carrier waves, can according to the priority of carrier wave height, Which carrier wave UE can choose as random access carrier wave.For example, NR regular upstream carrier wave, SUL carrier wave priority are successively successively decreased Or it is incremented by.The case where for multiple SUL, there is also certain priority before multiple SUL, similarly, UE select SUL as with In the case where machine access carrier, the carrier wave that random access procedure executes can also be determined according to the priority between SUL.It is this Mode is also applied for the case where switching.Fail when UE executes random access procedure on selected carrier wave, then re-starts random The carrier wave of access procedure selects NR regular upstream carrier wave, alternatively, the carrier wave that priority is high.Another situation, when UE is not received The instruction message of the random access carrier wave sent to base station, then default choice NR regular upstream carrier wave, alternatively, the load that priority is high Wave.Wherein, if executing random access failure on SUL, a kind of mode is to select the NR regular upstream higher than SUL priority Carrier wave, alternatively, the SUL carrier wave higher than current SUL carrier wave priority.
The priority configuration, alternatively, PRACH resource allocation information, or, PUSCH resource allocation information, or, PUCCH matches Confidence breath, alternatively, SRS configuration information, can be indicated by RMSI, alternatively, it is predefined, alternatively, by DCI signaling, alternatively, logical MAC signaling is crossed, or, passing through RRC signaling.
Wherein, PUCCH configuration information includes at least one of: PUCCH format information, PUCCH resource position, PUCCH It is enabled to occupy symbol, frequency hopping.SRS configuration information includes at least one of: occupying number of symbols, period, character position, period Bias internal amount, comb teeth, bandwidth, frequency hopping are enabled.
Preamble provided in this embodiment carries out frequency hopping processing method, be applicable not only to the transmission of up channel/signal/ It receives, equally, is also applied for down channel/signal and transmits/receives.Wherein, up channel/signal, including it is following at least it One: Physical Random Access Channel (Physical random access channel, PRACH), Preamble, Msg3 or Msg3 In include at least one of signal, detection reference signal (Sounding reference signal, SRS), physical uplink control Channel (Physical uplink control channel, PUCCH) processed, Physical Uplink Shared Channel (Physical Uplink shared channel, PUSCH), uplink demodulation reference signal (De Modulation Reference Signal, DMRS)。
Down channel/channel, including at least one of: synchronization signal (Synchronization signal, SS), same Walk block (SS Block, SSB), Physical Broadcast Channel (Physical broadcast channel, PBCH), paging (Paging), under Physical Downlink Control Channel (Physical downlink control channel, PDCCH), enhancing physics The shared letter of row control channel (Enhanced Physical Downlink Control Channel, EPDCCH), physical down Road (Physical downlink shared channel, PDSCH), random access response (Random access Response, RAR), downlink demodulation reference signal (De Modulation Reference Signal, DMRS), channel status Information reference signal (Channel State Information Reference Signal, CSI-RS), wherein CSI-RS is again It is divided into: the channel of the channel state information reference signals (Zero Power CSI-RS, ZP CSI-RS) of zero energy, non-zero power State information reference signals (Non-Zero Power CSI-RS, NZP CSI-RS), phase tracking reference signal (Phase Trace Reference Signal, PTRS) mode, newly-designed reference signal etc..
The present invention is not limited to for multiple or duplicate Preamble frequency-hopped scenario, other physical layer channel/signal jumps Frequency scene is equally applicable.In addition, high frequency, low frequency scene are also applied for, alternatively, unlicensed spectrum, authorization frequency spectrum, shared frequency spectrum etc. Spectrum application scene that may be present.
By the implementation of the present embodiment, frequency hopping is carried out on frequency domain, obtains frequency diversity gain, improves uplink covering model It encloses.
Embodiment 13
In order to solve the problems, such as that uplink coverage area is not big enough, the present embodiment provides a kind of processing of the frequency hopping of Preamble to fill It sets, 9, Figure 19 is a kind of schematic diagram of the frequency hopping processing unit of Preamble provided in this embodiment, the device packet referring to Figure 1 It includes:
Judgment module, for being enabled, being judged next according to random access preamble frequency hopping during sending n times information Secondary random access preamble whether frequency hopping;
Position determination module, for when the judgment module judging result is frequency hopping, then according to preset frequency pattern The frequency domain resource of specified frequency hopping;
Frequency hopper module, for carrying out frequency hopping processing in the frequency domain resource that the position determination module determines.
A kind of function of all steps of the frequency hopping processing method of Preamble of the offer of embodiment one may be implemented in the device Energy.
By the implementation of the present embodiment, when the transmission of Preamble, receiving or detecting, frequency hopping is carried out on frequency domain, is mentioned Uplink coverage area has been risen, frequency diversity gain is obtained.
Embodiment 14
In order to solve the problems, such as that uplink coverage area is not big enough, the present embodiment provides a kind of terminals, refer to Figure 20, Figure 20 For a kind of schematic diagram of terminal provided in this embodiment, which includes: processor 1001, memory 1002 and communication bus 1003;
Communication bus 1003 is for realizing the connection communication between processor 1001 and memory 1002;
Processor 1001 is for executing one or more program stored in memory 1002, to realize in embodiment one Preamble frequency hopping processing method in frequency hopping send processing step.
By the implementation of the present embodiment, when sending Preamble, frequency hopping is carried out on frequency domain, improves uplink covering model It encloses, obtains frequency diversity gain.
Embodiment 15
In order to solve the problems, such as that uplink coverage area is not big enough, the present embodiment provides a kind of computer readable storage medium, Computer-readable recording medium storage has one or more program, one or more program can be handled by one or more The step of device executes, frequency hopping processing method to realize the Preamble in embodiment one.
By the implementation of the present embodiment, when sending Preamble, frequency hopping is carried out on frequency domain, improves uplink covering model It encloses, obtains frequency diversity gain.
Obviously, those skilled in the art should be understood that each module of the embodiments of the present invention or each step can be used General computing device realizes that they can be concentrated on a single computing device, or be distributed in multiple computing device institutes On the network of composition, optionally, they can be realized with the program code that computing device can perform, it is thus possible to by them It is stored in storage medium (ROM/RAM, magnetic disk, CD) and is performed by computing device, and in some cases, it can be with not The sequence being same as herein executes shown or described step, or they are fabricated to each integrated circuit modules, or Person makes multiple modules or steps in them to single integrated circuit module to realize.So the present invention is not limited to appoint What specific hardware and software combines.
The above content is combining specific embodiment to be further described to made by the embodiment of the present invention, cannot recognize Fixed specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, Without departing from the inventive concept of the premise, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention Protection scope.

Claims (29)

1. a kind of frequency hopping processing method of random access preamble, comprising:
In the case where frequency hopping is enabled, transmission device according to preset frequency pattern or rule, carried out in specified resource with The transmission of machine access lead;And/or
Transmission device carries out receiving or detecting for random access preamble in the specified resource.
2. frequency hopping processing method as described in claim 1, which is characterized in that determine institute according at least one of following parameter State frequency pattern or rule:
The format of random access preamble;
The spatial structure of random access preamble;
The transmission of random access preamble repeats the number sent;
Frequency hopping time domain granularity Y;
The number of symbols that random access preamble occupies;
Frequency hopping bandwidth;
The frequency domain resource number K that can be used on the Physical Random Access Channel of transmitting random access preamble;
Subcarrier spacing SCS;
Available number of sub-bands T1;
Frequency domain position or index;
Subband position or subband index.
3. frequency hopping processing method as claimed in claim 2, which is characterized in that the spatial structure of the random access preamble includes At least one of:
M1 cyclic prefix CP;
N number of random access leader sequence;
M2 protection interval GT;
Wherein, N is positive integer more than or equal to 1, M1, M2 be more than or equal to 1, and/or, the positive integer less than or equal to N.
4. frequency hopping processing method as claimed in claim 3, which is characterized in that the N number of random access leader sequence meet with One of lower condition:
N number of random access leader sequence is identical sequence;
N number of random access leader sequence is not exactly the same sequence.
5. frequency hopping processing method as claimed in claim 2, which is characterized in that the frequency hopping time domain granularity Y is one of the following:
Subframe;Time slot;Small time slot;The unit being made of Q OFDM symbol;
Wherein, Q be more than or equal to 1, and, less than or equal to a positive integer between 6 or 7 or 12 or 14.
6. frequency hopping processing method as claimed in claim 2, which is characterized in that including at least one of frequency domain resource configuration side Formula:
The K frequencies being used for transmission on the Physical Random Access Channel of random access preamble in frequency hopping bandwidth are determined according to ad hoc fashion Domain resource;
By frequency hopping bandwidth partition at T1 available subbands, the physics of random access preamble are used for transmission in each subband comprising T2 Frequency domain resource in random access channel;Wherein, T1 is multiplied resulting value with T2 equal to frequency domain resource number K.
7. the frequency hopping processing method as described in claim 2 or 6, which is characterized in that the random access preamble that is used for transmission The size of Physical Random Access Channel frequency domain resource is related with the subcarrier spacing;
Wherein, the size of the Physical Random Access Channel frequency domain resource under the subcarrier spacing, can be according to right in existing LTE The Physical Random Access Channel frequency domain resource size under subcarrier spacing is answered to carry out zooming in or out for corresponding proportion.
8. frequency hopping processing method as claimed in claim 2, which is characterized in that the frequency hopping bandwidth is determined by following parameter: frequency Domain offset offset;Continuous frequency domain resource length.
9. the frequency hopping processing method as described at least one of claim 1 to 8, which is characterized in that for the specified money Source is the specified Physical Random Access Channel frequency domain resource after frequency hopping, alternatively, the Physical Random Access Channel frequency domain resource Affiliated subband situation, when can determine described by least one of mode:
By at least one of relevant parameter, according to the value that default rule or algorithm obtain, determines and specify after frequency hopping Physical Random Access Channel frequency domain resource index, alternatively, subband index belonging to the Physical Random Access Channel frequency domain resource;
Wherein, relevant parameter, comprising: the Physical Random Access Channel frequency domain resource index of Preamble transmission before frequency hopping, Preamble index, UE ID, constant offset amount offset, based on the obtained prime number a of frequency domain resource number K and prime number b, object Manage the total K of frequency domain of random access channel resource, mirror image enables, frequency hopping is enabled, frequency hopping direction/surround mode.
10. frequency hopping processing method as claimed in claim 9, which is characterized in that the constant offset amount offset includes following At least one:
The granularity of the constant offset amount offset offset includes following one:
The frequency domain resource of the occupancy of Physical Random Access Channel;Subband;
The value of the constant offset amount offset includes at least one of:
Offset offset be more than or equal to 0, and, less than or equal to the positive integer of frequency domain resource number K;
Offset offset be more than or equal to 0, and, less than or equal to the positive integer of number of sub-bands T1.
11. the frequency hopping processing method as described in claim 9 or 10, which is characterized in that when the parameter is Preamble When index, the default rule or algorithm are as follows:
Specified Physical Random Access Channel frequency domain resource index after the frequency hopping, alternatively, subband belonging to the frequency domain resource Index is the specified Preamble index and Physical Random Access Channel frequency domain resource number K or subband of the transmission Resulting value after number T1 modulus.
12. frequency hopping processing method as claimed in claim 11, which is characterized in that for existing in same available frequency domain resource Multiple UE send the leading situation of Preamble, what each UE in same Physical Random Access Channel frequency domain resource was sent Preamble lead code meets following one condition:
The Preamble index that each UE is sent is from different Preamble index groups;
The Preamble index that each UE is sent comes from identical Preamble index group.
13. frequency hopping processing method as claimed in claim 12, which is characterized in that the division side of the Preamble index group Formula, including at least one of:
Modulus operation is carried out according to Preamble index and Physical Random Access Channel frequency domain resource number K, by the operation Which identical Preamble index of resulting value is divided into the same Preamble index group, is divided into K altogether Preamble index group;
Using Physical Random Access Channel frequency domain resource number K as granularity of division, Preamble index is divided into several Preamble index group, the Preamble index number that each Preamble index group includes are K.
14. the frequency hopping processing method as described at least one of claim 11 to 13, further includes at least one of:
For carrying out modulus according to the transmission Preamble index and Physical Random Access Channel frequency domain resource number K The case where operation:
When mirror image is enabled, the Physical Random Access Channel frequency domain resource index of transmission Preamble is determined according to after frequency hopping Operation resulting value, and, Physical Random Access Channel frequency domain resource number K;Alternatively,
The Physical Random Access Channel frequency domain resource index that Preamble is sent after frequency hopping is that Physical Random Access Channel frequency domain provides Source number K subtracts operation resulting value and subtracts again or plus 1;
The case where for carrying out modulus operation according to the transmission Preamble index and number of sub-bands T1, including it is following At least one:
When mirror image is enabled, sent after frequency hopping the subband index of Preamble determination can according to operation resulting value, and, subband Number T1;
The subband index of transmission Preamble subtracts operation resulting value for subband index T1 and subtracts again or plus 1 after frequency hopping;Wherein, Relative position of the Preamble in subband is constant;
When the mirror image in subband is enabled, then sent in the subband after frequency hopping Preamble frequency domain resource position be relative to Physical Random Access Channel frequency domain resource number T2 in subband, with Preamble before frequency hopping in the subband position mirror image or right The position of title.
15. the frequency hopping processing method as described in claim 9 or 10, which is characterized in that described when the parameter is UE ID Default rule or algorithm are as follows:
Specified Physical Random Access Channel frequency domain resource index after the frequency hopping, alternatively, subband belonging to the frequency domain resource Index is the UE ID and frequency domain resource number K, alternatively, the resulting value after number of sub-bands T1 modulus.
16. frequency hopping processing method as described in claim 15, which is characterized in that for being deposited in same available frequency domain resource The case where multiple UE send the random access preamble, further includes:
In the case of the index of frequency domain resource after the frequency hopping determined based on different UE ID is identical, in conjunction with the random access Parameter in leading is adjusted the index of the frequency domain resource after the frequency hopping, so that difference UE ID is corresponding described random The index of the frequency domain resource adjusted after access lead frequency hopping is not identical.
17. the frequency hopping processing method as described in claim 9 or 10, which is characterized in that when the parameter is constant offset amount When offset, the default rule or algorithm are as follows:
According to the frequency domain resource index for sending the random access preamble before the frequency hopping, alternatively, belonging to the frequency domain resource Subband index determines the frequency domain resource index specified after the frequency hopping with, constant offset amount offset, alternatively, the frequency domain resource Affiliated subband index.
18. frequency hopping processing method as claimed in claim 17, which is characterized in that it is described according to sent before the frequency hopping it is described with The frequency domain resource of machine access lead indexes, alternatively, subband index belonging to the frequency domain resource, and constant offset amount offset is true Subband index belonging to the frequency domain resource index specified after the fixed frequency hopping or the frequency domain resource, including at least one of:
The frequency domain resource index specified after the frequency hopping, alternatively, subband index belonging to the frequency domain resource are as follows: sent out before the frequency hopping The frequency domain resource of the random access preamble is sent to index, alternatively, subband index belonging to the frequency domain resource and constant offset amount The resulting value of the sum of offset, then with frequency domain resource number K, alternatively, the resulting value after number of sub-bands T1 modulus;
The frequency domain resource index specified after the frequency hopping, alternatively, subband index belonging to the frequency domain resource are as follows: sent out before the frequency hopping The frequency domain resource of the random access preamble is sent to index, alternatively, subband index belonging to the frequency domain resource and constant offset amount The resulting value of the sum of offset.
19. frequency hopping processing method as claimed in claim 18, which is characterized in that the constant offset amount offset can for It is at least one lower:
The numerical value generated based on random function;More than or equal to 1 and it is less than or equal to Physical Random Access Channel frequency domain resource number Mesh K, alternatively, the value of number of sub-bands T1.
20. the frequency hopping processing method as described at least one of claim 17 to 19, which is characterized in that
In K frequency domain resource, or, taking in T1 son, the Physical Random Access Channel after frequency hopping is determined in an orbiting manner On frequency domain resource index, or, determine frequency hopping after subband index;
Wherein, around mode, including following one: forward direction is surround;It is reversed to surround.
21. the frequency hopping processing method as described at least one of claim 17 to 20, which is characterized in that further include it is following at least One of:
For being indexed according to the frequency domain resource for sending the random access preamble before the frequency hopping, with constant offset amount Offset determines the case where frequency domain resource index specified after the frequency hopping:
When mirror image is enabled, the Physical Random Access Channel frequency domain resource index of transmission Preamble is determined according to after frequency hopping Operation resulting value, and, Physical Random Access Channel frequency domain resource number K;Alternatively,
The Physical Random Access Channel frequency domain resource index that Preamble is sent after frequency hopping is that Physical Random Access Channel frequency domain provides Source number K subtracts operation resulting value and subtracts again or plus 1;
For sending subband index belonging to the frequency domain resource of the random access preamble before according to the frequency hopping, with fixation Offset offset determines the case where subband index belonging to the frequency domain resource for sending Preamble after the frequency hopping, including following At least one:
When mirror image is enabled, sent after frequency hopping the subband index of Preamble determination can according to operation resulting value, and, subband Number T1;
The subband index of transmission Preamble subtracts operation resulting value for subband index T1 and subtracts again or plus 1 after frequency hopping;Wherein, Relative position of the Preamble in subband is constant;
When the mirror image in subband is enabled, then sent in the subband after frequency hopping Preamble frequency domain resource position be relative to Physical Random Access Channel frequency domain resource number T2 in subband, with Preamble before frequency hopping in the subband position mirror image or right The position of title.
22. the frequency hopping processing method as described in claim 9 or 10, which is characterized in that this method further includes following one:
The frequency domain resource index specified after the frequency hopping, alternatively, before subband index belonging to the frequency domain resource is the frequency hopping The frequency domain resource index of the random access preamble is sent, alternatively, subband index belonging to the frequency domain resource, alternatively, Preamble index, and, the product resulting value of prime number a, then the resulting value with the sum of prime number b, and frequency domain resource number K, or Person, the resulting value after number of sub-bands T1 modulus;
After the frequency hopping specify frequency domain resource index, alternatively, subband index belonging to the frequency domain resource be the frequency hopping before send out The frequency domain resource of the random access preamble is sent to index, alternatively, subband index belonging to the frequency domain resource, alternatively, Preamble The quadratic power of index, the product resulting value with prime number a, then the resulting value with the sum of prime number b, and frequency domain resource number K, alternatively, Resulting value after number of sub-bands T1 modulus.
23. the frequency hopping processing method as described in claim 9,17,21 or 22, which is characterized in that refer to jump before the frequency hopping Before frequency, and, it is the last, or, for the first time, or, preceding primary.
24. the frequency hopping processing method as described in any one of claim 1 to 23, which is characterized in that the physical accidental access The frequency domain initial position of frequency domain resource on channel, including following one:
When resource situation continuous on frequency domain, the frequency domain initial position calculates in the following way:
Formula one:The formula one indicates resource successively from low frequency to the direction of high frequency institute Determining frequency domain initial position;
Formula two:The formula two indicate resource successively from Frequency domain initial position determined by direction of the high frequency to low frequency;
When resource distribution is at the both ends of system bandwidth or frequency hopping bandwidth and low high frequency position is interlocked the case where, the frequency domain is risen Beginning position calculates in the following way:
When resource distribution is in the both ends of system bandwidth or frequency hopping bandwidth and a part of low frequency position, another part high frequency position When situation, the frequency domain initial position calculates in the following way:
Wherein, describedFor the frequency domain initial position, the s is subcarrier spacing;The noffsetFor frequency offset amount, institute State noffsetValue be positive integer more than or equal to 0 and be less than or equal toValue;
It is describedIndicate the corresponding PRB number of frequency hopping bandwidth or the corresponding PRB number of system bandwidth;
It is describedIndicate the PRB number of the corresponding resource occupation of subcarrier spacing;
The Ki is the call number of frequency domain resource position, and value range is [0, K-1], and the K is frequency domain resource number;
The W is the number of one end distribution continuous resource of system bandwidth or frequency hopping bandwidth;The W is the half of the K.
25. frequency hopping processing method as claimed in claim 2, which is characterized in that the configuration of the determining frequency pattern or rule The acquisition modes of parameter, including at least one of:
It is predefined, high-rise RRC signaling, RMSI, physical layer DCI signaling.
26. frequency hopping processing method as claimed in claim 25, which is characterized in that the acquisition modes can be also used for obtaining At least one following configuration parameter:
System bandwidth;
Frequency domain constant offset amount;Wherein, the offset granularity is Physical Random Access Channel frequency domain resource granularity, or, subband Granularity;
Mirror image is enabled;
Frequency hopping is enabled;
Frequency hopping direction surround mode;
The frequency domain initial position of Physical Random Access Channel resource;
The initial position of subband;
Corresponding relationship between Preamble index and Physical Random Access Channel resource;
Prime number a, b, a, b are the prime number or a of frequency domain resource data K, and b is the prime number of number of sub-bands T1.
27. a kind of frequency hopping processing unit of random access preamble, comprising:
Judgment module, it is enabled according to random access preamble frequency hopping for during sending n times information, judge next time with Machine access lead whether frequency hopping;
Position determination module, for when the judgment module judging result is frequency hopping, then according to preset frequency pattern or rule Then specify the resource of frequency hopping;
Frequency hopper module, for carrying out frequency hopping processing in the resource that the position determination module determines.
28. a kind of terminal, comprising: processor, memory and communication bus;
The communication bus is for realizing the connection communication between processor and memory;
The processor is for executing one or more program stored in memory, to realize as in claim 1 to 26 Transmission processing step in described in any item frequency hopping processing methods.
29. a kind of computer readable storage medium, the computer-readable recording medium storage has one or more program, institute Stating one or more program can be executed by one or more processor, to realize such as any one of claim 1 to 26 institute The step of frequency hopping processing method stated.
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