CN104184548B - Random access sequence transmission method and device - Google Patents

Random access sequence transmission method and device Download PDF

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Publication number
CN104184548B
CN104184548B CN201410156220.3A CN201410156220A CN104184548B CN 104184548 B CN104184548 B CN 104184548B CN 201410156220 A CN201410156220 A CN 201410156220A CN 104184548 B CN104184548 B CN 104184548B
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China
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node
random access
prach
repetition
resource
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CN201410156220.3A
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Chinese (zh)
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CN104184548A (en
Inventor
刘锟
戴博
鲁照华
夏树强
方惠英
石靖
李新彩
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/002Transmission of channel access control information
    • H04W74/006Transmission of channel access control information in the downlink, i.e. towards the terminal

Abstract

The present invention provides a kind of random access sequence transmission method and devices.It is related to the communications field;Solve the problems, such as that the random access signaling for guaranteeing that MTC UE is sent under rugged environment can correctly be detected by eNB.This method comprises: first node, which sends random access channel, configures message, wherein the random access channel configuration message includes at least the random access channel resource configuration information of third node.M2M business of the technical solution provided by the invention suitable for LTE system realizes higher MTC UE random access performance.

Description

Random access sequence transmission method and device

Technical field

The present invention relates to the communications field more particularly to a kind of random access sequence transmission methods and device.

Background technique

Machine type communication (Machine Type Communication, MTC) user terminal (MTC User Equipment, MTC UE), also known as machine to machine (Machine to Machine, M2M) user communication device is at this stage The main application form of Internet of Things.Low power consumption and low cost be its can large-scale application important leverage.It disposes currently on the market M2M equipment is based primarily upon global mobile communication (Global System of Mobile communication, GSM) system.Closely Nian Lai, since the spectrum efficiency of long term evolution (Long Term Evolution, LTE)/LTE-A (the subsequent evolution of LTE) mentions Height, more and more mobile operator select evolution tendency of the LTE/LTE-A as future broadband wireless communication system.It is based on The M2M multiple types data service of LTE/LTE-A also will be more attractive.Only when LTE-M2M equipment accomplish at instinct compare GSM When the MTC terminal of system is low, M2M business could really be gone in LTE system from GSM.

At present for reduce MTC user terminal cost leading candidate method include: reduce terminal receiving antenna number, Reduce terminal baseband processing bandwidth, the peak rate for reducing terminal support, using semiduplex mode etc..However the reduction of cost The decline for meaning performance, the demand for the covering of the system cell LTE/LTE-A is irreducible, therefore is matched using low cost The MTC terminal needs set take some measures the covering performance demand that can be only achieved existing LTE terminal.In addition, MTC terminal may Positions, the locating scenes such as room located underground, corner are more severe than common LTE UE, under making up and covering caused by penetration loss Drop, guarantees the performance indicator of these MTC UE, and the uplink of MTC UE and the covering of downlink are carried out for this scene Enhancing is necessary.How to guarantee that the cut-in quality of MTC UE is then firstly the need of considering the problems of.

The transmission format that 5 kinds of random access signalings can be configured in existing LTE/LTE-A system altogether (is called Preamble Format), i.e. format0~4 Preamble, base station (Evolved Node B, evolved Node B, abbreviation eNB) is from 5 kinds One kind is selected in Preamble format, and the configuration information of the Preamble format of selection is passed through into system information (System Information Block, SIB) is sent to UE.UE is in the PRACH Preamble for knowing that current system is supported It is according to the random access sequence of current-configuration and raw according to the specific format of the Preamble format of selection after format It (is called at random access signaling and is message 1, Message1, abbreviation Msg1).UE sends above-mentioned random access letter on prach It enables.

ENB detects the random access signaling of UE transmission on prach in LTE/LTE-A system, once detect that UE is sent Random access signaling, will sending accidental access response message, (Random Access Response, referred to as RAR are called It is message 2, Message2 or abbreviation Msg2) to UE.

The occupied Physical Resource Block of accidental access response message (Physical Resource in LTE/LTE-A system Block, PRB) location information be included in Downlink Control Information (Downlink Control Information, DCI) And sent by Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH).On in addition, State further include in DCI information 16 bits cyclic redundancy check code (Cyclic Redundancy Check, CRC), and it is above-mentioned CRC further uses random access radio network temporary identifier (the Random Access Radio Network of 16 bits Temporary Identity, RA-RNTI) it is scrambled, scramble mode are as follows:

ck=(bk+ak) mod2 k=0,1 ..., 15

Wherein, bkFor+1 bit of kth in CRC;akFor+1 bit of kth in RA-RNTI;ckTo be generated after scrambling + 1 bit of kth.

UE receives RAR message, obtains the time synchronization of uplink and ascending resource but not can determine that RAR message at this time UE oneself is destined to without being destined to other UE because there is different UE at the same time-frequency resource A possibility that upper transmission identical random access sequence, in this way, they will be received similarly by identical RA-RNTI RAR.Whether there are other UE carrying out random access using identical resource moreover, UE is also unable to find out.UE needs logical thus Cross subsequent message 3 (Message3, abbreviation Msg3) and message 4 (Message4, abbreviation Msg4) message, come solve it is such with Machine access interference.

Msg3 is first based on uplink scheduling and uses HARQ (Hybrid Automatic Repeat request) The message that mechanism is transmitted on PUSCH.In initial random access procedure, what is transmitted in Msg3 is rrc layer connection request message (RRC Connection Request), if different UE receives identical RAR message, they will obtain identical Ascending resource, while sending Msg3 message, in order to distinguish different UE, the specific ID of UE can be carried in MSG3, use In distinguishing different UE. in the case of initial access, this ID can be UE S-TMSI (if present) or with One 40 values that machine generates.

UE will start at once after distributing MSg3 message competition eliminate timer (and then each time retransmit Msg3 will Restart this timer), UE needs to monitor the contention resolution message that eNodeB returns to oneself within this time (Contention Resolution, Msg4 message).

In order to guarantee that MTC UE also has access to network under rugged environment, need for LTE/LTE-A system with Machine access channel (Physical Random Access Channel, referred to as PRACH) carries out enhancing design, guarantees MTC UE It can normal access system.One step of most important one is how to guarantee that MTC UE is sent under rugged environment Random access signaling can correctly be detected by eNB.

Summary of the invention

The present invention provides a kind of random access sequence transmission method and device, solves and guarantee MTC UE in severe ring The problem of random access signaling sent under border can correctly be detected by eNB.

A kind of random access sequence transmission method, comprising:

First node sends random access channel and configures message, wherein the random access channel configuration message is at least wrapped Include the random access channel resource configuration information of third node.

Preferably, include at least one of in the random access channel resource configuration information:

For the configuration period of the random access channel resource of third node distribution;

For the enabled instruction information of the random access channel resource frequency hopping of third node distribution;

Frequency pattern for the random access channel resource of third node distribution indicates information.

For the enabled instruction information of the random access sequence jump of third node distribution;

For the random access sequence jump rule instruction information of third node distribution.

Preferably, the third node is the set of second node in one or more P (j, q), this method further include:

The second node is divided into J set according to the first predefined rule, each set is defined as P (j), In, 0≤j≤J-1, J are the positive integer more than or equal to 1;

The second node in the P (j) is divided into a subset of Q (j), each subset according to the second predefined rule It closes and defines P (j, q), Q (j) is the quantity for the subset that set P (j) needs to divide, Q (j) >=1,0≤q≤Q (j) -1.

Preferably, first predefined rule is following one:

The repetition transmission times that Physical Broadcast Channel (PBCH) needs are successfully decoded in the second node is divided into J to take It is worth section, second node segment according to locating for the number of repetition of PBCH when PBCH is successfully decoded determines that it should return The set P (j) of category;

The repetition transmission times that main information block (MIB) needs are successfully decoded in the second node is divided into J value Section, second node segment according to locating for the number of repetition of MIB when MIB is successfully decoded determine what it should belong to Set P (j);

The repetition transmission times that system information block (SIB) needs are successfully decoded in the second node is divided into J value Section, second node segment according to locating for the number of repetition of SIB when SIB is successfully decoded, it is determined that the collection of ownership It closes P (j);

The repetition transmission times that primary synchronization signal (PSS) needs are successfully decoded in the second node is divided into J value Section, second node segment according to locating for the number of repetition of PSS when PSS is successfully decoded, it is determined that the collection of ownership It closes P (j);

The repetition transmission times that secondary synchronization signal (SSS) needs are successfully decoded in the second node is divided into J value Section, second node segment according to locating for the number of repetition of SSS when SSS is successfully decoded, it is determined that the collection of ownership It closes P (j).

Preferably, second predefined rule are as follows:

The signal quality of predefined reference signal is divided into a value interval of Q (j), second section in set P (j) The signal quality of point measuring reference signals, and the segment according to locating for the signal quality of the reference signal of measurement, determine it The subset P (j, q) that should belong to.

Preferably, the predefined reference signal is at least one of:

The reference signal of sector-specific where the second node;

The dedicated reference signal of second node;

PSS;

SSS;

Channel status indicates reference signal (CSI-RS).

Preferably, the signal quality is at least one of:

Reference Signal Received Power (RSRP);

Reference Signal Received Quality (RSRQ);

Received signal strength indicator (RSSI);

Path loss values between the second node and the first node;

The downlink signal-to-noise ratio of the second node;

The uplink signal-to-noise ratio of the second node.

Preferably, when second section meets at least one of, subset quantity Q (j)=1 of the set P (j): son The number of repetition of the PBCH used when the decoding PBCH of second node function described in collection P (j) is greater than predefined threshold value;

When second node function described in subset P (j) decodes MIB, the number of repetition of MIB is greater than predefined threshold value;

When second node function described in subset P (j) decodes SIB, the number of repetition of SIB is greater than predefined threshold value;

When second node function described in subset P (j) decodes PSS, the number of repetition of PSS is greater than predefined threshold value;

When second node function described in subset P (j) decodes SSS, the number of repetition of SSS is greater than predefined threshold value;

When second node function described in subset P (j) decodes CSI-RS, the number of repetition of CSI-RS is greater than predefined thresholding Value.

Preferably, further include at least one of in the random access channel resource configuration information:

The threshold value of the number of repetition of the PBCH;

The threshold value of the number of repetition of the MIB;

The threshold value of the number of repetition of the SIB;

The threshold value of the number of repetition of the PSS;

The threshold value of the number of repetition of the SSS;

The threshold value of the number of repetition of the CSI-RS.

Preferably, the mapping relations between the signal quality segment of the reference signal and the subset P (j, q) of ownership by The first node configures or by system configuration.

Preferably, this method further include:

Second node in the subset P (j, q) adjusts transmission power when sending random access signaling.

Preferably, the transmission power when second node in the subset P (j, q) sends random access signaling is adjusted Including at least one of:

After the second node in subset P (j, q) sends random access signaling, and it is not received by the first segment When the accidental access response message that point is sent, the second node improves transmission power when sending random access signaling.

The transmission power when second node in the subset P (j, q) sends random access signaling is not in accordance with most Big transmission power configuration;

Preferably, the subset quantity Q (j) in set P (j) locating for the subset P (j, q) is greater than 1.

Preferably, the third node is one or more subsets of second node.

Preferably, the second node is divided into S1 subset according to predefined rule, and S1 is just whole more than or equal to 1 Number, the predefined rule is at least one of:

Coverage enhancement target value is divided into S1 value interval, the coverage enhancement that the second node is supported as needed Segment locating for target value is it is determined that the subset belonged to;

The coverage enhancement target value of random access channel is divided into S1 value interval, the second node is as needed Segment locating for the coverage enhancement target value of the random access channel of support is it is determined that the subset belonged to;

The coverage enhancement target value of Msg1 message is divided into S1 value interval, the second node is supported as needed Random access channel coverage enhancement target value locating for segment it is determined that ownership subset;

The number for repeating to send is needed to be divided into S1 value interval Msg1 message, the second node props up as needed Segment locating for the number that the Msg1 message held needs to repeat to send is it is determined that the subset belonged to;

The number for repeating to send is needed to be divided into S1 value interval random access sequence, the second node is according to need Segment locating for the number that the random access sequence to be supported needs to repeat to send is it is determined that the subset belonged to;

The number of repetition needed when Physical Broadcast Channel (PBCH) is successfully decoded in the second node is divided into S1 and takes It is worth section, second node segment according to locating for the number of repetition of PBCH when PBCH is successfully decoded determines that it should return The subset of category;

The number of repetition needed when MIB is successfully decoded in the second node is divided into S1 value interval, and described second Node segment according to locating for the number of repetition of MIB when MIB is successfully decoded determines its subset that should belong to;

The number of repetition needed when system information block SIB is successfully decoded in the second node is divided into S1 value area Between, second node segment according to locating for the number of repetition of SIB when SIB is successfully decoded determines its son that should belong to Collection;

The number of repetition needed when primary synchronization signal PSS is successfully decoded in the second node is divided into S1 value area Between, second node segment according to locating for the number of repetition of PSS when PSS is successfully decoded determines its son that should belong to Collection;

The number of repetition needed when secondary synchronization signal SSS is successfully decoded in the second node is divided into S1 value area Between, second node segment according to locating for the number of repetition of SSS when SSS is successfully decoded determines its son that should belong to Collection.

Preferably, it within the configuration period of the random access channel resource, is configured in same first subframe multiple When the frequency domain resource of the PRACH resource occupation configured in PRACH resource and the first different subframes is identical, the third node hair PRACH used in random access sequence is sent to occupy identical frequency domain resource in the first different subframes.

Preferably, it within the configuration period of the random access channel resource, is configured in same first subframe multiple When the frequency domain resource of the PRACH resource occupation configured in PRACH resource and the first different subframes is not exactly the same, the third Node sends PRACH used in random access sequence and occupies identical frequency domain resource in the first different subframes.

Preferably, it within the configuration period of the random access channel resource, is configured in same first subframe multiple PRACH resource, and the PRACH resource occupation configured in the first different subframes frequency domain resource it is not exactly the same when, and it is different The first subframe in the PRACH quantity that configures it is not exactly the same when, the third node is sent used in random access sequence PRACH occupies identical frequency domain resource in the first different subframes.

Preferably, first subframe is that the subframe of PRACH resource is assigned with for the third node.

Preferably, when the instruction Meaning of Information that the random access channel resource frequency hopping distributed for third node enables is frequency hopping When enabling, or defaulting enabled frequency hopping for the random access channel of third node distribution, in the first subframe in time predefined window The PRB resource occupied for the random access channel of third node distribution is identical, and the between continuous two time predefined windows The PRB resource difference occupied in one subframe for the random access channel of third node distribution.

Preferably, in the time predefined window, for the starting PRB of the random access channel occupancy of third node distribution Resource,It calculates and obtains according to following formula:

Wherein,To originate PRB resource index,

For PRB amount of bias,

The PRB occupied for uplink is total,

For a PRACH occupy PRB quantity,

fRAFor the index of PRACH resource, or it is Frame call number, or the configuration period number for being PRACH, or is PRACH Subframe numbers where the starting PRB of resource,

K is positive integer.

Preferably, between continuous two time predefined windows, the random access channel for the distribution of third node PRB resource the PRB of predefined quantity is spaced on frequency domain.

Preferably, in the time predefined window, for the starting PRB of the random access channel occupancy of third node distribution Resource,It calculates and obtains according to following formula:

Or

Wherein,

For PRB amount of bias,

fRAFor the index of PRACH resource, or it is Frame call number, or the configuration period number for being PRACH, or is PRACH Subframe numbers where the starting PRB of resource,

K is positive integer,

P is positive integer,

For stepped-frequency interval.

Preferably, in the time predefined window, when distributing multiple PRACH in first subframe for third node, A PRACH is selected from the multiple PRACH according to predefined rule, and is sent on selected PRACH and connect at random Enter sequence.

Preferably, in the time predefined window, the frequency domain resource of the PRACH occupancy selected in the first different subframes It is different.

Preferably, in the time predefined window, the frequency domain resource of the PRACH occupancy selected in the first different subframes It is partly or entirely different.

Preferably, in the time predefined window, N number of first subframe selects the identical PRACH of PRB resource, adjacent Two groups of N number of first subframes select PRACH resource according to predefined rule, wherein N is the positive integer more than or equal to 1.

Preferably, the predefined rule includes at least one of:

The index of the PRACH of the N number of first subframe selection of adjacent two groups is adjacent;

Difference of the corresponding PRB resource of PRACH of the N number of first subframe selection of adjacent two groups on frequency domain is maximum;

Difference of the corresponding PRB resource of PRACH of the N number of first subframe selection of adjacent two groups on frequency domain is minimum;

Difference of the corresponding PRB resource of PRACH of the N number of first subframe selection of adjacent two groups on frequency domain is by described first Node configures or by system configuration.

Preferably, it in the time predefined window, obtains in the first subframe as the random access channel of third node distribution PRB resource position there are many frequency pattern when, pass through the jump of the random access channel resource for the distribution of third node Frequency pattern indicates information, determines the frequency pattern used.

Preferably, when being meant that enabled for the random access sequence jump enable instruction of third node distribution, in advance It is partly or entirely different to define the transmission random access sequence of third node described in first subframe in time window.

Preferably, in the time predefined window, random access that the third node is sent in first subframe The index of sequence is determined by least one of:

The index of first subframe;

The index of frame where first subframe;

The index in the configuration period of the random access channel resource where first subframe;

The PRACH resource index that third node described in first subframe uses;

The index of the random access sequence of the third node selection.

Preferably, in the time predefined window, random access that the third node is sent in first subframe The determination of the index of sequence jumps rule by the random access sequence for the distribution of third node there are many when predefined rule Then indicate that information determines the predefined rule used.

Preferably, when being meant that enabled for the random access sequence jump enable instruction of third node distribution, in advance Defining in time window is that the random access sequence that third node distributes is identical, is third between continuous two time predefined windows The random access sequence of node distribution is different.

Preferably, in the time predefined window, the index for the random access sequence that the third node is sent is by following At least one determine:

The index of first subframe;

The index of frame where first subframe;

The index in the configuration period of the random access channel resource where first subframe;

The PRACH resource index that third node described in first subframe uses;

The index of the random access sequence of the third node selection.

Preferably, the time predefined window refers at least one of:

The configuration period of K1 subframe, K2 frame, the K3 random access channel resources,

Wherein, K1, K2, K3 are the positive integer more than or equal to 1, and value is configured by the first node or by system configuration.

Preferably, the second node is at least one of:

More than one terminal or set of terminal;

More than one MTC terminal or MTC terminal group;

More than one M2M terminal or M2M set of terminal;

More than one device-to-device (D2D) terminal or D2D set of terminal.

Preferably, the system configuration refers to by standard configuration or configures by network configuration or by network high level.

Preferably, the first node is at least one of:

Macro base station (Macro cell), micro-base station (Micro cell), femto base station (Pico cell), femto base station (Femto cell), Home eNodeB, low power nodes (LPN), relay station (Relay).

The present invention also provides a kind of random access sequence transmitting devices, comprising:

Configuration distributing module, for sending random access channel configuration message, wherein the random access channel configuration disappears Breath includes at least the random access channel resource configuration information of third node.

Preferably, the third node is the set of second node in one or more P (j, q), the device further include:

Resource management module, for the second node to be divided into J set, Mei Geji according to the first predefined rule Conjunction is defined as P (j), wherein 0≤j≤J-1, J are the positive integer more than or equal to 1, and the second node in the P (j) is pressed It is divided into a subset of Q (j) according to the second predefined rule, each subclass defines P (j, q), and Q (j) is that set P (j) needs to divide Subset quantity, Q (j) >=1,0≤q≤Q (j) -1.

The present invention provides a kind of random access sequence transmission method and device, first node sends random access channel and matches Set message, wherein the random access channel resource that the random access channel configuration message includes at least third node matches confidence Breath, realize higher MTC UE random access performance, solve guarantee MTC UE sent under rugged environment at random connect Enter the problem of signaling can correctly be detected by eNB.

Detailed description of the invention

Fig. 1 is in the embodiment of the present invention one be in 1 Frame MTC UEs distribution PRACH schematic diagram;

Fig. 2 is in the embodiment of the present invention three be in 1 Frame MTC UEs distribution PRACH schematic diagram;

It is that the PRACH of MTC UEs distribution shows within the configuration period of 1 PRACH that Fig. 3, which is in the embodiment of the present invention three, It is intended to;

It is that the PRACH of MTC UEs distribution shows within the configuration period of 1 PRACH that Fig. 4, which is in the embodiment of the present invention three, It is intended to;

It is that the PRACH of MTC UEs distribution shows within the configuration period of 2 PRACH that Fig. 5, which is in the embodiment of the present invention three, It is intended to;

Fig. 6 is in the embodiment of the present invention three when further including the enabled instruction of frequency hopping in random access channel resource configuration information When information, within the configuration period of 1 PRACH, for the schematic diagram of the PRACH of MTC UEs distribution;

Fig. 7 is in the embodiment of the present invention four in 2 Frame, for the schematic diagram of the PRACH of MTC UEs distribution;

Fig. 8 is the schematic diagram of the starting PRB resource location of PRACH send opportunity in the embodiment of the present invention four;

Fig. 9 is in the embodiment of the present invention five be in 1 Frame MTC UEs distribution PRACH schematic diagram;

Figure 10 is in the embodiment of the present invention six be in Frame0 MTC UEs distribution PRACH schematic diagram;

Figure 11 is the schematic diagram that another in the embodiment of the present invention six is the PRACH that MTC UEs is distributed in Frame0;

Figure 12 is a kind of structural schematic diagram for random access sequence transmitting device that the embodiment of the present invention eight provides.

Specific embodiment

The embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can mutual any combination.

The embodiment of the present invention one

There is MTC UEs and non-MTC UEs in radio systems, and is divided into MTC UEs according to predefined rule S1 set.

The predefined rule is: the coverage enhancement target value of random access channel is divided into S1 value interval, MTC Segment locating for the coverage enhancement target value for the random access channel that UEs is supported as needed is it is determined that the set belonged to.

The maximal cover of PRACH enhances target value (Max Coverage Enhanced Target, Max CET) 15dB, and MTC UEs is divided into 4 (S1=4) a set, it is called and is 4 coverage enhancement grade (Coverage Enhanced Level, CEL), for example, the CET=0dB of the PRACH of the MTC UEs of CEL0;The PRACH of the MTC UEs of CEL1 0dB < CET≤5dB;5dB < CET≤10dB of the PRACH of the MTC UEs of CEL2;The PRACH's of the MTC UEs of CEL3 10dB < CET≤15dB.

Random access channel configuration message includes random access channel resource configuration information, and MTC UEs decodes random access At least one following information can be obtained after channel resource configuration information:

The configuration period of the PRACH resource of MTC UEs;

Within the configuration period, the configuration information for the Physical Resource Block (PRB) that PRACH is occupied;

Within the configuration period, the configuration information for the subframe that PRACH is occupied;

For the configuration information of the random access sequence of MTC UEs distribution.

In the present embodiment, be MTC UEs distribution random access sequence sending mode be Preamble format0, time domain Length is 1 subframe, occupies 6 PRB on frequency domain;The PRACH configuration period of MTC UEs is 1 Frame.At 1 It is the PRACH of MTC UEs distribution as shown in Figure 1, the PRB occupied is PRB7~PRB12, PRB37~PRB42, one in Frame The chance of 5 PRACH transmission is shared, starting resource is respectively PRACH0, PRACH1, PRACH2, PRACH3, PRACH4.

In the present embodiment, the repetition transmission times for the PRACH that the MTC UE (UE1) of a CEL1 needs is 8 times, UE1 choosing It selects the PRACH with identical PRB and sends Preamble format0.UE1 can be sent out in the PRACH resource of PRB7~PRB12 Preamble format0 is sent, i.e., is sent on PRACH0, PRACH1, PRACH2, PRACH3 of 2 Frame.Equally, UE1 Preamble format0 can be sent in the PRACH resource of PRB37~PRB42, i.e., send out on the PRACH4 of 8 Frame Send Preamble format0.

In addition to the present embodiment the example above, the repetition transmission times for the PRACH that the MTC UE (UE1) of a CEL1 needs is 8 times, UE1 selection sends Preamble format0 with the PRACH of identical PRB.Then UE1 is provided in the PRACH of PRB7~PRB12 Preamble format0 is sent on source, i.e., sends on PRACH0, PRACH1, PRACH2, PRACH3 of 2 Frame.And The PRACH resource (PRACH4) of PRB37~PRB42 keeps for the MTC UE or non-MTC UEs of CEL0.

In addition to the present embodiment the example above, the predefined rule can also be at least one of:

Coverage enhancement target value is divided into S1 value interval, the coverage enhancement that the second node is supported as needed Segment locating for target value is it is determined that the subset belonged to;

The coverage enhancement target value of random access channel is divided into S1 value interval, the second node is as needed Segment locating for the coverage enhancement target value of the random access channel of support is it is determined that the subset belonged to;

The coverage enhancement target value of Msg1 message is divided into S1 value interval, the second node is supported as needed Random access channel coverage enhancement target value locating for segment it is determined that ownership subset;

The number for repeating to send is needed to be divided into S1 value interval Msg1 message, the second node props up as needed Segment locating for the number that the Msg1 message held needs to repeat to send is it is determined that the subset belonged to;

The number for repeating to send is needed to be divided into S1 value interval random access sequence, the second node is according to need Segment locating for the number that the random access sequence to be supported needs to repeat to send is it is determined that the subset belonged to;

The number that Physical Broadcast Channel (Physical Broadcast Channel, PBCH) is needed to repeat to send divides For S1 value interval, when the second node is according to PBCH is successfully decoded, section locating for the number of repetition of the PBCH used Section is it is determined that the subset belonged to;

The number for repeating to send is needed to be divided into S1 by main information block (Master Information Block, MIB) A value interval, when the second node is according to MIB is successfully decoded, segment locating for the number of repetition of MIB is it is determined that return The subset of category;

The number for repeating to send is needed to be divided into S1 by system information block (System Information Block, SIB) A value interval, when the second node is according to SIB is successfully decoded, segment locating for the number of repetition of SIB is it is determined that return The subset of category;

The number for repeating to send is needed to be divided by primary synchronization signal (Primary Synchronous Signal, PSS) S1 value interval, when the second node is according to PSS is successfully decoded, segment locating for the number of repetition of PSS it is determined that The subset of ownership;

The number that secondary synchronization signal (Secondary Synchronous Signal, SSS) is needed to repeat to send divides For S1 value interval, when the second node is according to SSS is successfully decoded, the determination of segment locating for the number of repetition of SSS is answered The subset of the ownership.

The embodiment of the present invention two

There is MTC UEs and non-MTC UEs in radio systems.

MTC UEs is divided into J set according to the first predefined rule first, each set is defined as P (j), wherein 0≤j≤J-1, J are the positive integer more than or equal to 1.

First predefined rule are as follows:

The number that secondary synchronization signal (Secondary Synchronous Signal, SSS) is needed to repeat to send divides For J value interval, when MTC UE is according to SSS is successfully decoded, segment locating for the number of repetition of SSS it is determined that ownership Set P (j).

Then, when SSS is successfully decoded in selection MTC UEs, the number of repetition of SSS is less than the subset P of predefined threshold value (j), it and by the MTC UEs in above-mentioned P (j) according to the second predefined rule is divided into a subset of Q (j), each subclass is fixed Adopted P (j, q);Q (j) is the quantity for the subset that set P (j) needs to divide, Q (j) >=1,0≤q≤Q (j) -1;The wherein SSS The threshold value of number of repetition is sent in random access channel resource configuration information.

Second predefined rule are as follows:

The signal quality of predefined reference signal is divided into a value interval of Q (j), the institute MTC UEs in subset P (j) The signal quality of measuring reference signals, and the segment according to locating for the signal quality of the reference signal of measurement is it is determined that return The subset P (j, q) of category.

Wherein, the predefined reference signal is: reference signal (the Cell specific Reference of sector-specific Signal, CRS);

Wherein, the signal quality is: Reference Signal Received Power (Reference Signal Received Power, Referred to as RSRP);

Wherein, the mapping relations between the RSRP segment of CRS and the subset P (j, Q (j)) of MTC UEs ownership are matched by eNB It sets.

In the present embodiment, the threshold value of the SSS number of repetition of MTC UE is sent out in random access channel resource configuration information It send, and is configured to A, when MTC UE is according to SSS is successfully decoded, whether the number of repetition of SSS is greater than A, and MTC UEs is divided into two A set P (0), P (1), i.e. J=2.Wherein, when SSS is successfully decoded in the MTC UEs in set P (0), the number of repetition of SSS is small In A;When SSS is successfully decoded in MTC UEs in set P (1), the number of repetition of SSS is more than or equal to A.

In the present embodiment, the RSRP value that is obtained according to the MTC UEs in set P (0) based on CRS measurement and according to from big To small sequence, MTC UEs in set P (0) is divided into Q (0)=3 subset, each subclass defines P (0, q), 0≤q≤ 2.Wherein, each subset is defined as P (0, q), and corresponding RSRP value interval is configured by standard default or configured by eNB.

Therefore, MTC UEs is divided into 4 subsets altogether in the present embodiment, is P (0,0), P (0,1), P (0,2) and P respectively (1), and the MTC UEs of 4 coverage enhancement grades (Coverage Enhanced Level, CEL) can be called.For example, P (0, 0) the coverage enhancement grade of MTC UEs is CEL0, and the coverage enhancement grade of the MTC UEs of P (0,1) is CEL1, P's (0,2) The coverage enhancement grade of MTC UEs is CEL2, and the coverage enhancement grade of the MTC UEs of P (1) is CEL3.

Random access channel configuration message includes random access channel resource configuration information, and MTC UEs decodes random access At least one following information can be obtained after channel resource configuration information:

For the configuration period of the PRACH of MTC UEs distribution;

Within the configuration period, for the configuration information of the Physical Resource Block (PRB) of the PRACH occupancy of MTC UEs distribution;

Within the configuration period, the configuration information of subframe occupied by the PRACH for MTC UEs distribution;

For the configuration information of the random access sequence of MTC UEs distribution.

In the present embodiment, be MTC UEs distribution random access sequence sending mode be Preamble format0, length For 1 subframe, and occupy 6 PRB;The configuration period for the PRACH of MTC UEs distribution is 1 Frame.At 1 It is the PRACH of MTC UEs distribution as shown in Figure 1, the PRB occupied is PRB7~PRB12, PRB37~PRB42, one in Frame The chance of 5 PRACH transmission is shared, starting resource is respectively PRACH0, PRACH1, PRACH2, PRACH3, PRACH4.

The repetition transmission times of the MTC UE (UE1) of one CEL1, the PRACH needed are 8 times, then UE1 can be in PRB7 In the PRACH resource of~PRB12 send Preamble format0, i.e., PRACH0, PRACH1 of 2 Frame, PRACH2, It is sent on PRACH3.The PRACH resource (PRACH4) of PRB37~PRB42 keeps for the MTC UE or non-MTC UEs of CEL0.

P (0,0), P (0,1), transmission power is adjustable when MTC UEs sends random access signaling in P (0,2), and If above-mentioned MTC UE after sending random access signaling, is not received by the accidental access response message of eNB transmission, above-mentioned MTC UE improves transmission power when sending random access signaling.

In addition to the example above of the present embodiment, first predefined rule can also be at least one of:

The number that Physical Broadcast Channel (Physical Broadcast Channel, PBCH) is needed to repeat to send divides For J value interval, when the second node is according to PBCH is successfully decoded, segment locating for the number of repetition of the PBCH used It is determined that the set P (j) of ownership;

The number for repeating to send is needed to be divided into J by main information block (Master Information Block, MIB) Value interval, when the second node is according to MIB is successfully decoded, segment locating for the number of repetition of MIB is it is determined that ownership Set P (j);

The number for repeating to send is needed to be divided into J by system information block (System Information Block, SIB) Value interval, when the second node is according to SIB is successfully decoded, segment locating for the number of repetition of SIB is it is determined that ownership Set P (j);

The number for repeating to send is needed to be divided into J by primary synchronization signal (Primary Synchronous Signal, PSS) A value interval, when the second node is according to PSS is successfully decoded, segment locating for the number of repetition of PSS is it is determined that return The set P (j) of category.

In addition to the present embodiment the example above, the predefined reference signal can also be at least one of:

Channel status indicates reference signal (Channel State Indication Reference Signal, CSI- RS),

The demodulated reference signal (DeModulation Reference Signal, DMRS) of MTC UE,

Primary synchronization signal (Primary Synchronization Signal, referred to as PSS),

Secondary synchronization signal (Secondary Synchronization Signal, referred to as SSS).

In addition to the present embodiment the example above, the signal quality can be at least one of:

Reference Signal Received Quality (Reference Signal Received Quality, referred to as RSRQ);

Received signal strength indicator (Received Signal Strength Indicator, referred to as RSSI);

Path loss values between MTC UE and eNB;

The downlink signal-to-noise ratio of MTC UE;

The uplink signal-to-noise ratio of MTC UE.

The embodiment of the present invention three

There is MTC UEs and non-MTC UEs in radio systems, and is divided into MTC UEs according to predefined rule S1 set.

The predefined rule is: the coverage enhancement target value of random access channel is divided into S1 value interval, MTC Segment locating for the coverage enhancement target value for the random access channel that UEs is supported as needed is it is determined that the set belonged to.

The maximal cover of PRACH enhances target value (Max Coverage Enhanced Target, Max CET) 15dB, and MTC UEs is divided into 4 (S1=4) a set, it is called and is 4 coverage enhancement grade (Coverage Enhanced Level, CEL).

In the present embodiment, following information can be obtained at least after MTC UEs decoding random access channel resource configuration information One of:

The configuration period of PRACH resource;

Within the configuration period, the configuration information for the Physical Resource Block (PRB) that PRACH is occupied;

Within the configuration period, the configuration information for the subframe that PRACH is occupied;

The configuration information of the random access sequence of distribution.

In the present embodiment, be MTC UEs distribution random access sequence sending mode be Preamble format0, length For 1 subframe, and occupy 6 PRB;The configuration period for the PRACH of MTC UEs distribution is 1 Frame.At 1 It is the PRACH of MTC UEs distribution as shown in Fig. 2, the PRB occupied is PRB7~PRB12, one shares 4 PRACH hairs in Frame The chance sent, starting resource are respectively PRACH0, PRACH1, PRACH2, PRACH3.

When in random access channel resource configuration information further including frequency hopping enable instruction, in the configuration of 1 PRACH In period, for MTC UEs distribution PRACH as shown in figure 3, each PRACH send opportunity starting PRB resource location, It calculates according to the following formula:

Wherein,To originate PRB resource index;

For PRB amount of bias, in the present embodiment

The PRB occupied for uplink is total, in the present embodiment

For the PRB quantity that a PRACH is occupied, in the present embodiment

fRAFor the number of the PRACH chance sent, f in the present embodimentRA=0~3;

For the random access channel of MTC UE distribution PRB resource position there are many frequency pattern when, by for MTCUE The frequency pattern of the random access channel resource of distribution indicates information, determines the frequency pattern used.

In addition to the present embodiment the example above, letter is indicated when further including that frequency hopping is enabled in random access channel resource configuration information It is the PRACH of MTC UEs distribution as shown in figure 4, each PRACH send opportunity within the configuration period of 1 PRACH when breath PRB resource location is originated,It calculates according to the following formula:

Wherein,To originate PRB resource index;

For PRB amount of bias, in the present embodiment

The PRB occupied for uplink is total, in the present embodiment

For the PRB quantity that a PRACH is occupied, in the present embodiment

TRAFor the subframe numbers where the starting PRB of the PRACH chance sent, T in the present embodimentRA=2,3,7,8.

In addition to the present embodiment the example above, letter is indicated when further including that frequency hopping is enabled in random access channel resource configuration information It is the PRACH of MTC UEs distribution as shown in figure 5, each PRACH send opportunity within the configuration period of 2 PRACH when breath PRB resource location is originated,It calculates according to the following formula:

Wherein,To originate PRB resource index;

For PRB amount of bias, in the present embodiment

The PRB occupied for uplink is total, in the present embodiment

For the PRB quantity that a random access channel occupies, in the present embodiment

K is Frame call number or the configuration period number of PRACH.

In addition to the present embodiment the example above, letter is indicated when further including that frequency hopping is enabled in random access channel resource configuration information It is the PRACH of MTC UEs distribution as shown in fig. 6, each PRACH send opportunity within the configuration period of 1 PRACH when breath PRB resource location is originated,It calculates according to the following formula:

Wherein,To originate PRB resource index;

For PRB amount of bias, in the present embodiment

The PRB occupied for uplink is total, in the present embodiment

For the PRB quantity that a PRACH is occupied, in the present embodiment

fRAFor the index of PRACH send opportunity;

K is the time domain interval of PRACH frequency hopping, K=2 in the present embodiment;

In addition to the present embodiment the example above, letter is indicated when further including that frequency hopping is enabled in random access channel resource configuration information When breath, within the configuration period of 1 PRACH, for the starting PRB resource-niche of each PRACH send opportunity of MTC UEs distribution It sets,It calculates according to the following formula:

Wherein,To originate PRB resource index;

For PRB amount of bias;

The PRB sum occupied for uplink;

The PRB quantity occupied for a PRACH;

fRAFor the index of PRACH send opportunity, or it is Frame call number, or the configuration period number for being PRACH, or is Subframe numbers where the starting PRB for the chance that PRACH is sent;

K is stepped-frequency interval.

The embodiment of the present invention four

There is MTC UEs and non-MTC UEs in radio systems, and is divided into MTC UEs according to predefined rule S1 set.

The predefined rule is: the coverage enhancement target value of random access channel is divided into S1 value interval, MTC Segment locating for the coverage enhancement target value for the random access channel that UEs is supported as needed is it is determined that the set belonged to.

The maximal cover of PRACH enhances target value (Max Coverage Enhanced Target, Max CET) 15dB, and MTC UEs is divided into 4 (S1=4) a set, it is called and is 4 coverage enhancement grade (Coverage Enhanced Level, CEL), for example, the CET=0dB of the PRACH of the MTC UEs of CEL0;The PRACH of the MTC UEs of CEL1 0dB < CET≤5dB;5dB < CET≤10dB of the PRACH of the MTC UEs of CEL2;The PRACH's of the MTC UEs of CEL3 10dB < CET≤15dB.

In the present embodiment, be MTC UEs distribution random access sequence sending mode be Preamble format0, length For 1 subframe, and occupy 6 PRB;The configuration period for the PRACH of MTC UEs distribution is 2 Frame.At 2 It is the PRACH of MTC UEs distribution as shown in fig. 7, the PRB occupied is PRB7~PRB12, one shares 8 PRACH hairs in Frame The chance sent, starting resource be respectively PRACH0, PRACH1, PRACH2, PRACH3, PRACH4, PRACH5, PRACH6, PRACH7。

When in random access channel resource configuration information further including frequency hopping enable instruction, in the configuration of 1 PRACH In period, the starting PRB resource location of each PRACH send opportunity,It calculates according to the following formula:

Wherein,

For PRB amount of bias;

The PRB sum occupied for uplink;

The PRB quantity occupied for a PRACH;

fRAFor the index of PRACH send opportunity, or it is Frame call number, or the configuration period number for being PRACH, or is Subframe numbers where the starting PRB for the chance that PRACH is sent;

K is positive integer;

P is positive integer

For stepped-frequency interval;

For reserved PRB resource,Wherein, it is configured by high level.

In the present embodiment, work as fRAFor the index of PRACH send opportunity, K=1, When p=3, within the configuration period of 1 PRACH, each PRACH send opportunity It is as shown in Figure 8 to originate PRB resource location.

In addition to the present embodiment the example above, letter is indicated when further including that frequency hopping is enabled in random access channel resource configuration information When breath, within the configuration period of 1 PRACH, the starting PRB resource location of each PRACH send opportunity,It counts according to the following formula It calculates:

Wherein,

For PRB amount of bias;

The PRB sum occupied for uplink;

The PRB quantity occupied for a PRACH;

fRAFor the index of PRACH send opportunity, or it is Frame call number, or the configuration period number for being PRACH, or is Subframe numbers where the starting PRB for the chance that PRACH is sent;

K is positive integer;

P is positive integer

For stepped-frequency interval;

For reserved PRB resource,Wherein, it is configured by high level.

In addition to the present embodiment the example above, letter is indicated when further including that frequency hopping is enabled in random access channel resource configuration information When breath, within the configuration period of 1 PRACH, the starting PRB resource location of each PRACH send opportunity,It counts according to the following formula It calculates:

Wherein,For PRB amount of bias;

The PRB sum occupied for uplink;

The PRB quantity occupied for a PRACH;

fRAFor the index of PRACH send opportunity, or it is Frame call number, or the configuration period number for being PRACH, or is Subframe numbers where the starting PRB for the chance that PRACH is sent;

K is positive integer;

P is positive integer;

For stepped-frequency interval;

For reserved PRB resource.

In addition to the present embodiment the example above, when further including frequency hopping enable instruction in random access channel resource configuration information When, within the configuration period of 1 PRACH, the starting PRB resource location of each PRACH send opportunity,It calculates according to the following formula:

Wherein,For PRB amount of bias;

The PRB sum occupied for uplink;

The PRB quantity occupied for a PRACH;

fRAFor the index of PRACH send opportunity, or it is Frame call number, or the configuration period number for being PRACH, or is Subframe numbers where the starting PRB for the chance that PRACH is sent;

K is positive integer;

P is positive integer;

For stepped-frequency interval;

For reserved PRB resource.

The embodiment of the present invention five

There is MTC UEs and non-MTC UEs in radio systems, and is divided into MTC UEs according to predefined rule S1 set.

The predefined rule is: the coverage enhancement target value of random access channel is divided into S1 value interval, MTC Segment locating for the coverage enhancement target value for the random access channel that UEs is supported as needed is it is determined that the set belonged to.

The maximal cover of PRACH enhances target value (Max Coverage Enhanced Target, Max CET) 15dB, and MTC UEs is divided into 4 (S1=4) a set, it is called and is 4 coverage enhancement grade (Coverage Enhanced Level, CEL), for example, the CET=0dB of the PRACH of the MTC UEs of CEL0;The PRACH of the MTC UEs of CEL1 0dB < CET≤5dB;5dB < CET≤10dB of the PRACH of the MTC UEs of CEL2;The PRACH's of the MTC UEs of CEL3 10dB < CET≤15dB.

Being sent in the random access channel configuration message of MTC UEs includes multiple random access channel resources with confidence It ceases, includes the MTC UEs of one or more CEL in each random access channel resource configuration information.In the present embodiment, connect at random Enter includes 4 random access channel resource configuration informations, each random access channel resource configuration information in channel configuration messages In include a CEL MTC UEs.

At least one following information can be obtained after MTC UEs decoding random access channel resource configuration information:

For the configuration period of the PRACH of MTC UEs distribution;

Within the configuration period, for the configuration information of the Physical Resource Block (PRB) of the PRACH occupancy of MTC UEs distribution;

Within the configuration period, the configuration information of subframe occupied by the PRACH for MTC UEs distribution;

For the configuration information of the random access sequence of MTC UEs distribution.

In the present embodiment, the random access sequence sending mode of the MTC UEs for being CEL1 distribution is Preamble Format0, length are 1 subframe, and occupy 6 PRB, and the configuration period of the PRACH of distribution is 1 Frame.At 1 Be the PRACH of MTC UEs distribution in Frame as shown in figure 9, the PRB of occupancy is PRB7~PRB12, PRB3~PRB42, altogether The chance for having 6 PRACH to send, starting resource is respectively PRACH0, PRACH1, PRACH2, PRACH3, PRACH4, PRACH5.

When in random access channel resource configuration information further including frequency hopping enable instruction, UE1 is the MTC of CEL1 UE, UE1 send the resource location of the occupied PRACH of Preamble as shown in figure 9, i.e. within the configuration period of 1 PRACH PRACH0、PRACH3、PRACH4。

The embodiment of the present invention six

There is MTC UEs and non-MTC UEs in radio systems, and is divided into MTC UEs according to predefined rule S1 set.

The predefined rule is: the coverage enhancement target value of random access channel is divided into S1 value interval, MTC Segment locating for the coverage enhancement target value for the random access channel that UEs is supported as needed is it is determined that the set belonged to;

The maximal cover of PRACH enhances target value (Max Coverage Enhanced Target, Max CET) 15dB, and MTC UEs is divided into 4 (S1=4) a set, it is called and is 4 coverage enhancement grade (Coverage Enhanced Level, CEL), for example, the CET=0dB of the PRACH of the MTC UEs of CEL0;The PRACH of the MTC UEs of CEL1 0dB < CET≤5dB;5dB < CET≤10dB of the PRACH of the MTC UEs of CEL2;The PRACH's of the MTC UEs of CEL3 10dB < CET≤15dB.

Being sent in the random access channel configuration message of MTC UEs includes multiple random access channel resources with confidence It ceases, includes the MTC UEs of one or more CEL in each random access channel resource configuration information.In the present embodiment, connect at random Enter includes 4 random access channel resource configuration informations, each random access channel resource configuration information in channel configuration messages In include a CEL MTC UEs.

At least one following information can be obtained after MTC UEs decoding random access channel resource configuration information:

For the configuration period of the PRACH of MTC UEs distribution;

Within the configuration period, for the configuration information of the Physical Resource Block (PRB) of the PRACH occupancy of MTC UEs distribution;

Within the configuration period, the configuration information of subframe occupied by the PRACH for MTC UEs distribution;

For the configuration information of the random access sequence of MTC UEs distribution.

In the present embodiment, the random access sequence sending mode of the MTC UEs for being CEL1 distribution is Preamble Format0, length are 1 subframe, and occupy 6 PRB, and the configuration period of the PRACH of distribution is 1 Frame.Frame0 The interior PRACH for MTC UEs distribution is as shown in Figure 10, and the PRB of occupancy is that PRB7~PRB12, PRB3~PRB42, one share 6 The chance that PRACH is sent, starting resource are respectively PRACH0, PRACH1, PRACH2, PRACH3, PRACH4, PRACH5, other It is identical as Frame0 for the position PRACH of MTC UEs distribution in Frame.

When in random access channel resource configuration information further including frequency hopping enable instruction, and the MTC UE hair of CEL1 When the starting resource of Preamble being sent to be Frame0 Subframe2 PRACH0, the MTC UEs of CEL1 can be in following groups In PRACH resource, any one group of resource of selection sends Preamble:

1、Frame0 Subframe2 PRACH0、Frame0 Subframe3 PRACH5、Frame1Subframe2 PRACH2,Frame1 Subframe3 PRACH1,Frame2 Subframe2PRACH4;Frame2 Subframe3 PRACH3,Frame3 Subframe2 PRACH0,Frame3Subframe3 PRACH5,……;

2、Frame0 Subframe2 PRACH0、Frame0 Subframe3 PRACH5、Frame1Subframe2 PRACH2,Frame1 Subframe3 PRACH5,Frame2 Subframe2PRACH0;Frame2 Subframe3 PRACH5,Frame3 Subframe2 PRACH2,Frame3Subframe3 PRACH5,……;

3、Frame0 Subframe2 PRACH0、Frame0 Subframe3 PRACH5、Frame1Subframe2 PRACH2,Frame1 Subframe3 PRACH5,Frame2 Subframe2PRACH0;Frame2 Subframe3 PRACH5,Frame3 Subframe2 PRACH2,Frame3Subframe3 PRACH5,……;

4、Frame0 Subframe2 PRACH0、Frame0 Subframe3 PRACH1、Frame1Subframe2 PRACH2,Frame1 Subframe3 PRACH3,Frame2 Subframe2PRACH4;Frame2 Subframe3 PRACH5、Frame3 Subframe2 PRACH0、Frame3Subframe3 PRACH1、……。

In addition to the present embodiment the example above, the random access sequence sending mode of the MTC UEs for being CEL1 distribution is Preamble format0, length are 1 subframe, and occupy 6 PRB, and the configuration period of the PRACH of distribution is 1 Frame.As shown in figure 11 for the PRACH of MTC UEs distribution in Frame0, the PRB of occupancy is PRB7~PRB12, PRB3~ PRB42, one share 6 PRACH transmission chance, starting resource be respectively PRACH0, PRACH1, PRACH2, PRACH3, PRACH4, PRACH5 are identical as Frame0 for the position PRACH of MTC UEs distribution in other Frame.

When in random access channel resource configuration information further including frequency hopping enable instruction, and the MTC UE hair of CEL1 When the starting resource of Preamble being sent to be Frame0 Subframe2 PRACH0, the MTC UEs of CEL1 can be in following groups In PRACH resource, any one group of resource of selection sends Preamble:

1、Frame0 Subframe2 PRACH0、Frame0 Subframe3 PRACH3、Frame1Subframe2 PRACH4,Frame1 Subframe3 PRACH1,Frame2 Subframe2PRACH2;Frame2 Subframe3 PRACH5,Frame3 Subframe2 PRACH0,Frame3Subframe3 PRACH3,……;

2、Frame0 Subframe2 PRACH0、Frame0 Subframe3 PRACH3、Frame1Subframe2 PRACH4,Frame1 Subframe3 PRACH3,Frame2 Subframe2PRACH0;Frame2 Subframe3 PRACH3,Frame3 Subframe2 PRACH4,Frame3Subframe3 PRACH3,……;

3、Frame0 Subframe2 PRACH0、Frame0 Subframe3 PRACH1、Frame1Subframe2 PRACH2,Frame1 Subframe3 PRACH3,Frame2 Subframe2PRACH4;Frame2 Subframe3 PRACH5,Frame3 Subframe2 PRACH0,Frame3Subframe3 PRACH1,……;

4、Frame0 Subframe2 PRACH0、Frame0 Subframe3 PRACH1、Frame1Subframe2 PRACH2,Frame1 Subframe3 PRACH3,Frame2 Subframe2PRACH4;Frame2 Subframe3 PRACH5、Frame3 Subframe2 PRACH2、Frame3Subframe3 PRACH3、……。

The embodiment of the present invention seven

There is MTC UEs and non-MTC UEs in radio systems, and is divided into MTC UEs according to predefined rule S1 set.

The predefined rule is: the coverage enhancement target value of random access channel is divided into S1 value interval, MTC Segment locating for the coverage enhancement target value for the random access channel that UEs is supported as needed is it is determined that the set belonged to.

The maximal cover of PRACH enhances target value (Max Coverage Enhanced Target, Max CET) 15dB, and MTC UEs is divided into 4 (S1=4) a set, it is called and is 4 coverage enhancement grade (Coverage Enhanced Level, CEL), for example, the CET=0dB of the PRACH of the MTC UEs of CEL0;The PRACH of the MTC UEs of CEL1 0dB < CET≤5dB;5dB < CET≤10dB of the PRACH of the MTC UEs of CEL2;The PRACH's of the MTC UEs of CEL3 10dB < CET≤15dB.

Random access channel configuration message includes random access channel resource configuration information, and MTC UEs decodes random access At least one following information can be obtained after channel resource configuration information:

The configuration period of the PRACH resource of MTC UEs;

Within the configuration period, the configuration information for the Physical Resource Block (PRB) that PRACH is occupied;

Within the configuration period, PRACH occupy subframe configuration information;

For the configuration information of the random access sequence of MTC UEs distribution.

In the present embodiment, be MTC UEs distribution random access sequence sending mode be Preamble format0, length For 1 subframe, and occupy 6 PRB;The configuration period for the PRACH of MTC UEs distribution is 1 Frame.At 1 It is the PRACH of MTC UEs distribution as shown in Fig. 2, the PRB occupied is PRB7~PRB12, one shares 4 PRACH hairs in Frame The chance sent, starting resource are respectively PRACH0, PRACH1, PRACH2, PRACH3.

When in random access channel resource configuration information further including frequency hopping enable instruction, in the configuration of 1 PRACH In period, for MTC UEs distribution PRACH as shown in figure 3, each PRACH send opportunity starting PRB resource location, It calculates according to the following formula:

Wherein,To originate PRB resource index;

For PRB amount of bias, in the present embodiment

The PRB occupied for uplink is total, in the present embodiment

For the PRB quantity that a PRACH is occupied, in the present embodiment

fRAFor the number of the PRACH chance sent, f in the present embodimentRA=0~3.

When further include in random access channel resource configuration information random access sequence jump enable instruction, and indicate When information is meant that enabled, within the configuration period of 1 PRACH, MTC UE sends random access sequence in the first subframe It is not identical.Wherein, the first subframe is that the subframe of PRACH resource, this reality are assigned with for MTC UE within the configuration period of PRACH It applies in example, i.e. PRACH0, PRACH1, PRACH2, PRACH3 in Fig. 2.

The index of the random access sequence sent in the first subframe is determined by least one of:

The index of first subframe;

The index of frame where first subframe;

The index in the configuration period of the PRACH where the first subframe;

The PRACH resource index that third node described in first subframe uses;

The index of the random access sequence of MTC UE selection.

When the determination of the index for the random access sequence that MTC UE is sent in the first subframe is there are many predefined rule, The predefined rule used is determined by the random access sequence jump rule instruction information distributed for MTC UE.

In addition to the present embodiment the example above, when further include in random access channel resource configuration information random access sequence jump Become enable instruction, and indicate information when being meant that enabled, in the configuration period of the same PRACH MTC UE use with It is different that machine accesses the random access sequence that sequence is identical, and MTC UE is used between the configuration period of adjacent PRACH.

The embodiment of the present invention eight

The embodiment of the invention provides a kind of random access sequence transmitting devices, and the structure of the device is as shown in figure 12, packet It includes:

Configuration distributing module 1201, for sending random access channel configuration message, wherein the random access channel is matched Set the random access channel resource configuration information that message includes at least third node.

Preferably, the third node is the set of second node in one or more P (j, q), the device further include:

Resource management module 1202, for the second node to be divided into J set according to the first predefined rule, often A set is defined as P (j), wherein 0≤j≤J-1, J are the positive integer more than or equal to 1, by second section in the P (j) O'clock it is divided into a subset of Q (j) according to the second predefined rule, each subclass defines P (j, q), and Q (j) is that set P (j) needs The quantity of the subset of division, Q (j) >=1,0≤q≤Q (j) -1.

It should be noted that be illustrated by taking the random access channel design to MTC as an example in the embodiment of the present invention, For the discovery channel of the UE of D2D, the technical solution that the embodiment of the present invention provides is equally applicable, and details are not described herein.

The embodiment of the present invention nine

The embodiment of the invention provides a kind of random access sequence transmission methods, complete random access sequence using this method The process of transmission is as follows:

1, second node is divided into J set according to the first predefined rule, each set is defined as P (j), wherein 0 ≤ j≤J-1, J are the positive integer more than or equal to 1.

2, the second node in the P (j) is divided into a subset of Q (j), every height according to the second predefined rule Set defines P (j, q), and Q (j) is the quantity for the subset that set P (j) needs to divide, Q (j) >=1,0≤q≤Q (j) -1.

The third node is the set of second node in one or more P (j, q).

Preferably, first predefined rule is following one:

The repetition transmission times that Physical Broadcast Channel (PBCH) needs are successfully decoded in the second node is divided into J to take It is worth section, second node segment according to locating for the number of repetition of PBCH when PBCH is successfully decoded determines that it should return The set P (j) of category;

The repetition transmission times that main information block (MIB) needs are successfully decoded in the second node is divided into J value Section, second node segment according to locating for the number of repetition of MIB when MIB is successfully decoded determine what it should belong to Set P (j);

The repetition transmission times that system information block (SIB) needs are successfully decoded in the second node is divided into J value Section, second node segment according to locating for the number of repetition of SIB when SIB is successfully decoded, it is determined that the collection of ownership It closes P (j);

The repetition transmission times that primary synchronization signal (PSS) needs are successfully decoded in the second node is divided into J value Section, second node segment according to locating for the number of repetition of PSS when PSS is successfully decoded, it is determined that the collection of ownership It closes P (j);

The repetition transmission times that secondary synchronization signal (SSS) needs are successfully decoded in the second node is divided into J value Section, second node segment according to locating for the number of repetition of SSS when SSS is successfully decoded, it is determined that the collection of ownership It closes P (j).

Preferably, second predefined rule are as follows:

The signal quality of predefined reference signal is divided into a value interval of Q (j), second section in set P (j) The signal quality of point measuring reference signals, and the segment according to locating for the signal quality of the reference signal of measurement, determine it The subset P (j, q) that should belong to.

Preferably, the predefined reference signal is at least one of:

The reference signal of sector-specific where the second node;

The dedicated reference signal of second node;

PSS;

SSS;

Channel status indicates reference signal (CSI-RS).

Preferably, the signal quality is at least one of:

Reference Signal Received Power (RSRP);

Reference Signal Received Quality (RSRQ);

Received signal strength indicator (RSSI);

Path loss values between the second node and the first node;

The downlink signal-to-noise ratio of the second node;

The uplink signal-to-noise ratio of the second node.

Preferably, when second section meets at least one of, subset quantity Q (j)=1 of the set P (j): son The number of repetition of the PBCH used when the decoding PBCH of second node function described in collection P (j) is greater than predefined threshold value;

When second node function described in subset P (j) decodes MIB, the number of repetition of MIB is greater than predefined threshold value;

When second node function described in subset P (j) decodes SIB, the number of repetition of SIB is greater than predefined threshold value;

When second node function described in subset P (j) decodes PSS, the number of repetition of PSS is greater than predefined threshold value;

When second node function described in subset P (j) decodes SSS, the number of repetition of SSS is greater than predefined threshold value;

When second node function described in subset P (j) decodes CSI-RS, the number of repetition of CSI-RS is greater than predefined thresholding Value.

Preferably, further include at least one of in the random access channel resource configuration information:

The threshold value of the number of repetition of the PBCH;

The threshold value of the number of repetition of the MIB;

The threshold value of the number of repetition of the SIB;

The threshold value of the number of repetition of the PSS;

The threshold value of the number of repetition of the SSS;

The threshold value of the number of repetition of the CSI-RS.

Preferably, the mapping relations between the signal quality segment of the reference signal and the subset P (j, q) of ownership by The first node configures or by system configuration.

Preferably, this method further include:

Second node in the subset P (j, q) adjusts transmission power when sending random access signaling.

Preferably, the transmission power when second node in the subset P (j, q) sends random access signaling is adjusted Including at least one of:

After the second node in subset P (j, q) sends random access signaling, and it is not received by the first segment When the accidental access response message that point is sent, the second node improves transmission power when sending random access signaling.

The transmission power when second node in the subset P (j, q) sends random access signaling is not in accordance with most Big transmission power configuration;

Preferably, the subset quantity Q (j) in set P (j) locating for the subset P (j, q) is greater than 1.

3, first node sends random access channel and configures message, wherein the random access channel configuration message is at least Random access channel resource configuration information including third node.

Preferably, include at least one of in the random access channel resource configuration information:

For the configuration period of the random access channel resource of third node distribution;

For the enabled instruction information of the random access channel resource frequency hopping of third node distribution;

Frequency pattern for the random access channel resource of third node distribution indicates information.

For the enabled instruction information of the random access sequence jump of third node distribution;

For the random access sequence jump rule instruction information of third node distribution.

Preferably, the third node is one or more subsets of second node.

Preferably, the second node is divided into S1 subset according to predefined rule, and S1 is just whole more than or equal to 1 Number, the predefined rule is at least one of:

Coverage enhancement target value is divided into S1 value interval, the coverage enhancement that the second node is supported as needed Segment locating for target value is it is determined that the subset belonged to;

The coverage enhancement target value of random access channel is divided into S1 value interval, the second node is as needed Segment locating for the coverage enhancement target value of the random access channel of support is it is determined that the subset belonged to;

The coverage enhancement target value of Msg1 message is divided into S1 value interval, the second node is supported as needed Random access channel coverage enhancement target value locating for segment it is determined that ownership subset;

The number for repeating to send is needed to be divided into S1 value interval Msg1 message, the second node props up as needed Segment locating for the number that the Msg1 message held needs to repeat to send is it is determined that the subset belonged to;

The number for repeating to send is needed to be divided into S1 value interval random access sequence, the second node is according to need Segment locating for the number that the random access sequence to be supported needs to repeat to send is it is determined that the subset belonged to;

The number of repetition needed when Physical Broadcast Channel (PBCH) is successfully decoded in the second node is divided into S1 and takes It is worth section, second node segment according to locating for the number of repetition of PBCH when PBCH is successfully decoded determines that it should return The subset of category;

The number of repetition needed when MIB is successfully decoded in the second node is divided into S1 value interval, and described second Node segment according to locating for the number of repetition of MIB when MIB is successfully decoded determines its subset that should belong to;

The number of repetition needed when system information block SIB is successfully decoded in the second node is divided into S1 value area Between, second node segment according to locating for the number of repetition of SIB when SIB is successfully decoded determines its son that should belong to Collection;

The number of repetition needed when primary synchronization signal PSS is successfully decoded in the second node is divided into S1 value area Between, second node segment according to locating for the number of repetition of PSS when PSS is successfully decoded determines its son that should belong to Collection;

The number of repetition needed when secondary synchronization signal SSS is successfully decoded in the second node is divided into S1 value area Between, second node segment according to locating for the number of repetition of SSS when SSS is successfully decoded determines its son that should belong to Collection.

Preferably, it within the configuration period of the random access channel resource, is configured in same first subframe multiple When the frequency domain resource of the PRACH resource occupation configured in PRACH resource and the first different subframes is identical, the third node hair PRACH used in random access sequence is sent to occupy identical frequency domain resource in the first different subframes.

Preferably, it within the configuration period of the random access channel resource, is configured in same first subframe multiple When the frequency domain resource of the PRACH resource occupation configured in PRACH resource and the first different subframes is not exactly the same, the third Node sends PRACH used in random access sequence and occupies identical frequency domain resource in the first different subframes.

Preferably, it within the configuration period of the random access channel resource, is configured in same first subframe multiple PRACH resource, and the PRACH resource occupation configured in the first different subframes frequency domain resource it is not exactly the same when, and it is different The first subframe in the PRACH quantity that configures it is not exactly the same when, the third node is sent used in random access sequence PRACH occupies identical frequency domain resource in the first different subframes.

Preferably, first subframe is that the subframe of PRACH resource is assigned with for the third node.

Preferably, when the instruction Meaning of Information that the random access channel resource frequency hopping distributed for third node enables is frequency hopping When enabling, or defaulting enabled frequency hopping for the random access channel of third node distribution, in the first subframe in time predefined window The PRB resource occupied for the random access channel of third node distribution is identical, and the between continuous two time predefined windows The PRB resource difference occupied in one subframe for the random access channel of third node distribution.

Preferably, in the time predefined window, for the starting PRB of the random access channel occupancy of third node distribution Resource,It calculates and obtains according to following formula:

Wherein,To originate PRB resource index,

For PRB amount of bias,

The PRB occupied for uplink is total,

For a PRACH occupy PRB quantity,

fRAFor the index of PRACH resource, or it is Frame call number, or the configuration period number for being PRACH, or is PRACH Subframe numbers where the starting PRB of resource,

K is positive integer.

Preferably, between continuous two time predefined windows, the random access channel for the distribution of third node PRB resource the PRB of predefined quantity is spaced on frequency domain.

Preferably, in the time predefined window, for the starting PRB of the random access channel occupancy of third node distribution Resource,It calculates and obtains according to following formula:

Or

Wherein,

For PRB amount of bias,

fRAFor the index of PRACH resource, or it is Frame call number, or the configuration period number for being PRACH, or is PRACH Subframe numbers where the starting PRB of resource,

K is positive integer,

P is positive integer,

For stepped-frequency interval.

Preferably, in the time predefined window, when distributing multiple PRACH in first subframe for third node, A PRACH is selected from the multiple PRACH according to predefined rule, and is sent on selected PRACH and connect at random Enter sequence.

Preferably, in the time predefined window, the frequency domain resource of the PRACH occupancy selected in the first different subframes It is different.

Preferably, in the time predefined window, the frequency domain resource of the PRACH occupancy selected in the first different subframes It is partly or entirely different.

Preferably, in the time predefined window, N number of first subframe selects the identical PRACH of PRB resource, adjacent Two groups of N number of first subframes select PRACH resource according to predefined rule, wherein N is the positive integer more than or equal to 1.

Preferably, the predefined rule includes at least one of:

The index of the PRACH of the N number of first subframe selection of adjacent two groups is adjacent;

Difference of the corresponding PRB resource of PRACH of the N number of first subframe selection of adjacent two groups on frequency domain is maximum;

Difference of the corresponding PRB resource of PRACH of the N number of first subframe selection of adjacent two groups on frequency domain is minimum;

Difference of the corresponding PRB resource of PRACH of the N number of first subframe selection of adjacent two groups on frequency domain is by described first Node configures or by system configuration.

Preferably, it in the time predefined window, obtains in the first subframe as the random access channel of third node distribution PRB resource position there are many frequency pattern when, pass through the jump of the random access channel resource for the distribution of third node Frequency pattern indicates information, determines the frequency pattern used.

Preferably, when being meant that enabled for the random access sequence jump enable instruction of third node distribution, in advance It is partly or entirely different to define the transmission random access sequence of third node described in first subframe in time window.

Preferably, in the time predefined window, random access that the third node is sent in first subframe The index of sequence is determined by least one of:

The index of first subframe;

The index of frame where first subframe;

The index in the configuration period of the random access channel resource where first subframe;

The PRACH resource index that third node described in first subframe uses;

The index of the random access sequence of the third node selection.

Preferably, in the time predefined window, random access that the third node is sent in first subframe The determination of the index of sequence jumps rule by the random access sequence for the distribution of third node there are many when predefined rule Then indicate that information determines the predefined rule used.

Preferably, when being meant that enabled for the random access sequence jump enable instruction of third node distribution, in advance Defining in time window is that the random access sequence that third node distributes is identical, is third between continuous two time predefined windows The random access sequence of node distribution is different.

Preferably, in the time predefined window, the index for the random access sequence that the third node is sent is by following At least one determine:

The index of first subframe;

The index of frame where first subframe;

The index in the configuration period of the random access channel resource where first subframe;

The PRACH resource index that third node described in first subframe uses;

The index of the random access sequence of the third node selection.

Preferably, the time predefined window refers at least one of:

The configuration period of K1 subframe, K2 frame, the K3 random access channel resources,

Wherein, K1, K2, K3 are the positive integer more than or equal to 1, and value is configured by the first node or by system configuration.

Preferably, the second node is at least one of:

More than one terminal or set of terminal;

More than one MTC terminal or MTC terminal group;

More than one M2M terminal or M2M set of terminal;

More than one device-to-device (D2D) terminal or D2D set of terminal.

Preferably, the system configuration refers to by standard configuration or configures by network configuration or by network high level.

Preferably, the first node is at least one of:

Macro base station (Macro cell), micro-base station (Micro cell), femto base station (Pico cell), femto base station (Femto cell), Home eNodeB, low power nodes (LPN), relay station (Relay).

The present invention provides a kind of random access sequence transmission method and device, first node sends random access channel and matches Set message, wherein the random access channel resource that the random access channel configuration message includes at least third node matches confidence Breath, realize higher MTC UE random access performance, solve guarantee MTC UE sent under rugged environment at random connect Enter the problem of signaling can correctly be detected by eNB.

Those of ordinary skill in the art will appreciate that computer journey can be used in all or part of the steps of above-described embodiment Sequence process realizes that the computer program can be stored in a computer readable storage medium, the computer program exists (such as system, unit, device) executes on corresponding hardware platform, when being executed, include the steps that embodiment of the method it One or combinations thereof.

Optionally, integrated circuit can be used also to realize in all or part of the steps of above-described embodiment, these steps can To be fabricated to integrated circuit modules one by one respectively, or make multiple modules or steps in them to single integrated electricity Road module is realized.In this way, the present invention is not limited to any specific hardware and softwares to combine.

Each device/functional module/functional unit in above-described embodiment, which can be adopted, is realized with general computing device realization, it Can be concentrated on a single computing device, can also be distributed over a network of multiple computing devices.

Each device/functional module/functional unit in above-described embodiment realized in the form of software function module and as Independent product when selling or using, can store in a computer readable storage medium.Computer mentioned above Read/write memory medium can be read-only memory, disk or CD etc..

Anyone skilled in the art in the technical scope disclosed by the present invention, can readily occur in variation or Replacement, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the guarantor described in claim It protects subject to range.

Claims (37)

1. a kind of random access sequence transmission method characterized by comprising
First node sends random access channel and configures message, wherein random access channel configuration message includes at least the The random access channel resource configuration information of three nodes;
The third node is the set of second node in one or more P (j, q), this method further include:
The second node is divided into J set according to the first predefined rule, each set is defined as P (j), wherein 0≤ J≤J-1, J are the positive integer more than or equal to 1;
The second node in the P (j) is divided into a subset of Q (j) according to the second predefined rule, each subclass is fixed Adopted P (j, q), Q (j) are the quantity for the subset that set P (j) needs to divide, Q (j) >=1,0≤q≤Q (j) -1;
First predefined rule is following one:
The repetition transmission times that Physical Broadcast Channel (PBCH) needs are successfully decoded in the second node is divided into J value area Between, second node segment according to locating for the number of repetition of PBCH when PBCH is successfully decoded determines what it should belong to Set P (j);
The repetition transmission times that main information block (MIB) needs are successfully decoded in the second node is divided into J value interval, Second node segment according to locating for the number of repetition of MIB when MIB is successfully decoded determines its set P that should belong to (j);
The repetition transmission times that system information block (SIB) needs are successfully decoded in the second node is divided into J value interval, Second node segment according to locating for the number of repetition of SIB when SIB is successfully decoded, it is determined that the set P of ownership (j);
The repetition transmission times that primary synchronization signal (PSS) needs are successfully decoded in the second node is divided into J value interval, Second node segment according to locating for the number of repetition of PSS when PSS is successfully decoded, it is determined that the set P of ownership (j);
The repetition transmission times that secondary synchronization signal (SSS) needs are successfully decoded in the second node is divided into J value interval, Second node segment according to locating for the number of repetition of SSS when SSS is successfully decoded, it is determined that the set P of ownership (j)。
2. random access sequence transmission method according to claim 1, which is characterized in that the random access channel resource Include at least one of in configuration information:
For the configuration period of the random access channel resource of third node distribution;
For the enabled instruction information of the random access channel resource frequency hopping of third node distribution;
Frequency pattern for the random access channel resource of third node distribution indicates information;
For the enabled instruction information of the random access sequence jump of third node distribution;
For the random access sequence jump rule instruction information of third node distribution.
3. random access sequence transmission method according to claim 1, which is characterized in that second predefined rule Are as follows:
The signal quality of predefined reference signal is divided into a value interval of Q (j), the second node in set P (j) is surveyed The signal quality of reference signal, and the segment according to locating for the signal quality of the reference signal of measurement are measured, determines that it should The subset P (j, q) of ownership.
4. random access sequence transmission method according to claim 3, which is characterized in that the predefined reference signal is At least one of:
The reference signal of sector-specific where the second node;
The dedicated reference signal of second node;
PSS;
SSS;
Channel status indicates reference signal (CSI-RS).
5. random access sequence transmission method according to claim 3, which is characterized in that the signal quality be with down toward It is one of few:
Reference Signal Received Power (RSRP);
Reference Signal Received Quality (RSRQ);
Received signal strength indicator (RSSI);
Path loss values between the second node and the first node;
The downlink signal-to-noise ratio of the second node;
The uplink signal-to-noise ratio of the second node.
6. random access sequence transmission method according to claim 1, which is characterized in that second section meet with down toward Few a period of time, subset quantity Q (j)=1 of the set P (j), second node described in subset P (j) make when PBCH is successfully decoded The number of repetition of PBCH is greater than predefined threshold value;
When MIB is successfully decoded in second node described in subset P (j), the number of repetition of MIB is greater than predefined threshold value;
When SIB is successfully decoded in second node described in subset P (j), the number of repetition of SIB is greater than predefined threshold value;
When PSS is successfully decoded in second node described in subset P (j), the number of repetition of PSS is greater than predefined threshold value;
When SSS is successfully decoded in second node described in subset P (j), the number of repetition of SSS is greater than predefined threshold value;
When CSI-RS is successfully decoded in second node described in subset P (j), the number of repetition of CSI-RS is greater than predefined threshold value.
7. random access sequence transmission method according to claim 6, which is characterized in that the random access channel resource Further include at least one of in configuration information:
The threshold value of the number of repetition of the PBCH;
The threshold value of the number of repetition of the MIB;
The threshold value of the number of repetition of the SIB;
The threshold value of the number of repetition of the PSS;
The threshold value of the number of repetition of the SSS;
The threshold value of the number of repetition of the CSI-RS.
8. random access sequence transmission method according to claim 3, which is characterized in that the signal matter of the reference signal Mapping relations between amount segment and the subset P (j, q) of ownership are configured by the first node or by system configuration.
9. random access sequence transmission method according to claim 3, which is characterized in that this method further include:
Second node in the subset P (j, q) adjusts transmission power when sending random access signaling.
10. random access sequence transmission method according to claim 9, which is characterized in that adjust the subset P (j, q) In the second node send random access signaling when transmission power include at least one of:
After the second node in subset P (j, q) sends random access signaling, and it is not received by the first node hair When the accidental access response message sent, the second node improves transmission power when sending random access signaling;
The transmission power when second node in the subset P (j, q) sends random access signaling is sent out not in accordance with maximum Penetrate power configuration.
11. random access sequence transmission method according to claim 10, which is characterized in that the subset P (j, q) is locating Set P (j) in subset quantity Q (j) be greater than 1.
12. random access sequence transmission method according to claim 2, which is characterized in that the third node is second One or more subsets of node.
13. random access sequence transmission method according to claim 12, which is characterized in that the second node is according to pre- Definition rule is divided into S1 subset, and S1 is the positive integer more than or equal to 1, and the predefined rule is at least one of:
Coverage enhancement target value is divided into S1 value interval, the coverage enhancement target that the second node is supported as needed The locating segment of value is it is determined that the subset belonged to;
The coverage enhancement target value of random access channel is divided into S1 value interval, the second node is supported as needed Random access channel coverage enhancement target value locating for segment it is determined that ownership subset;
The coverage enhancement target value of Msg1 message is divided into S1 value interval, the second node support as needed with Machine accesses segment locating for the coverage enhancement target value of channel it is determined that the subset belonged to;
The number for repeating to send is needed to be divided into S1 value interval Msg1 message, what the second node was supported as needed Segment locating for the number that Msg1 message needs to repeat to send is it is determined that the subset belonged to;
The number for repeating to send is needed to be divided into S1 value interval random access sequence, the second node props up as needed Segment locating for the number that the random access sequence held needs to repeat to send is it is determined that the subset belonged to;
The number of repetition needed when Physical Broadcast Channel (PBCH) is successfully decoded in the second node is divided into S1 value area Between, second node segment according to locating for the number of repetition of PBCH when PBCH is successfully decoded determines what it should belong to Subset;
The number of repetition needed when MIB is successfully decoded in the second node is divided into S1 value interval, the second node According to segment locating for the number of repetition of MIB when MIB is successfully decoded, its subset that should belong to is determined;
The number of repetition needed when system information block SIB is successfully decoded in the second node is divided into S1 value interval, institute Second node segment according to locating for the number of repetition of SIB when SIB is successfully decoded is stated, determines its subset that should belong to;
The number of repetition needed when primary synchronization signal PSS is successfully decoded in the second node is divided into S1 value interval, institute Second node segment according to locating for the number of repetition of PSS when PSS is successfully decoded is stated, determines its subset that should belong to;
The number of repetition needed when secondary synchronization signal SSS is successfully decoded in the second node is divided into S1 value interval, institute Second node segment according to locating for the number of repetition of SSS when SSS is successfully decoded is stated, determines its subset that should belong to.
14. random access sequence transmission method according to claim 2, which is characterized in that
Within the configuration period of the random access channel resource, multiple PRACH resources and not are configured in same first subframe With the first subframe in the frequency domain resource of PRACH resource occupation that configures it is identical when, the third node sends random access sequence PRACH used in arranging occupies identical frequency domain resource in the first different subframes.
15. random access sequence transmission method according to claim 2, which is characterized in that
Within the configuration period of the random access channel resource, multiple PRACH resources and not are configured in same first subframe When the frequency domain resource of the PRACH resource occupation configured in the first same subframe is not exactly the same, the third node sends random PRACH used in access sequence occupies identical frequency domain resource in the first different subframes.
16. random access sequence transmission method according to claim 2, which is characterized in that
Within the configuration period of the random access channel resource, multiple PRACH resources are configured in same first subframe, and not When the frequency domain resource of the PRACH resource occupation configured in the first same subframe is not exactly the same, and match in the first different subframes When the PRACH quantity set is not exactly the same, the third node sends PRACH used in random access sequence different the Identical frequency domain resource is occupied in one subframe.
17. random access sequence transmission method described in 4 or 15 or 16 according to claim 1, which is characterized in that described One subframe is that the subframe of PRACH resource is assigned with for the third node.
18. random access sequence transmission method according to claim 2, which is characterized in that
It when the instruction Meaning of Information that the random access channel resource frequency hopping distributed for third node enables is that frequency hopping is enabled, or is the It is third node point in the first subframe in time predefined window when the random access channel of three nodes distribution defaults enabled frequency hopping The PRB resource that the random access channel matched occupies is identical, is the in the first subframe between continuous two time predefined windows The PRB resource that the random access channel of three nodes distribution occupies is different.
19. random access sequence transmission method according to claim 18, which is characterized in that
It is the starting PRB resource that the random access channel of third node distribution occupies in the time predefined window,It presses It calculates and obtains according to following formula:
Wherein,To originate PRB resource index,
For PRB amount of bias,
The PRB occupied for uplink is total,
For a PRACH occupy PRB quantity,
fRAFor the index of PRACH resource, or it is Frame call number, or the configuration period number for being PRACH, or is PRACH resource Starting PRB where subframe numbers,
K is positive integer.
20. random access sequence transmission method according to claim 18, which is characterized in that
Between continuous two time predefined windows, the PRB resource of the random access channel for the distribution of third node exists The PRB of predefined quantity is spaced on frequency domain.
21. random access sequence transmission method according to claim 18, which is characterized in that in the time predefined window It is interior, it is the starting PRB resource that the random access channel of third node distribution occupies,It calculates and obtains according to following formula:
Or
Wherein,
For PRB amount of bias,
fRAFor the index of PRACH resource, or it is Frame call number, or the configuration period number for being PRACH, or is PRACH resource Starting PRB where subframe numbers,
K is positive integer,
P is positive integer,
For stepped-frequency interval.
22. random access sequence transmission method according to claim 18, which is characterized in that
In the time predefined window, when distributing multiple PRACH in first subframe for third node, according to predefined rule A PRACH is then selected from the multiple PRACH, and sends random access sequence on selected PRACH.
23. random access sequence transmission method according to claim 22, which is characterized in that
In the time predefined window, the frequency domain resource that the PRACH selected in the first different subframes is occupied is different.
24. random access sequence transmission method according to claim 22, which is characterized in that in the time predefined window Interior, the frequency domain resource that the PRACH selected in the first different subframes is occupied is partly or entirely different.
25. random access sequence transmission method according to claim 22, which is characterized in that in the time predefined window Interior, N number of first subframe selects the identical PRACH of PRB resource, and N number of first subframe of adjacent two groups is selected according to predefined rule PRACH resource, wherein N is the positive integer more than or equal to 1.
26. random access sequence transmission method according to claim 25, which is characterized in that the predefined rule includes At least one of:
The index of the PRACH of the N number of first subframe selection of adjacent two groups is adjacent;
Difference of the corresponding PRB resource of PRACH of the N number of first subframe selection of adjacent two groups on frequency domain is maximum;
Difference of the corresponding PRB resource of PRACH of the N number of first subframe selection of adjacent two groups on frequency domain is minimum;
Difference of the corresponding PRB resource of PRACH of the N number of first subframe selection of adjacent two groups on frequency domain is by the first node It configures or by system configuration.
27. random access sequence transmission method according to claim 18, which is characterized in that
In the time predefined window, the PRB resource of the random access channel in the first subframe for the distribution of third node is obtained Position indicates letter by the frequency pattern of the random access channel resource for the distribution of third node there are many when frequency pattern Breath determines the frequency pattern used.
28. random access sequence transmission method according to claim 2, which is characterized in that
When being meant that enabled for the random access sequence jump enable instruction of third node distribution, in time predefined window The first subframe described in third node send random access sequence it is partly or entirely different.
29. random access sequence transmission method according to claim 28, which is characterized in that the time predefined window Interior, the index for the random access sequence that the third node is sent in first subframe is determined by least one of:
The index of first subframe;
The index of frame where first subframe;
The index in the configuration period of the random access channel resource where first subframe;
The PRACH resource index that third node described in first subframe uses;
The index of the random access sequence of the third node selection.
30. random access sequence transmission method according to claim 29, which is characterized in that
In the time predefined window, the index for the random access sequence that the third node is sent in first subframe It determines there are many when predefined rule, it is true that rule instruction information is jumped by the random access sequence for the distribution of third node Surely the predefined rule used.
31. random access sequence transmission method according to claim 2, which is characterized in that
When being meant that enabled for the random access sequence jump enable instruction of third node distribution, in time predefined window For third node distribution random access sequence it is identical, between continuous two time predefined windows for third node distribution with It is different that machine accesses sequence.
32. random access sequence transmission method according to claim 31, which is characterized in that the time predefined window Interior, the index for the random access sequence that the third node is sent is determined by least one of:
The index of first subframe;
The index of frame where first subframe;
The index in the configuration period of the random access channel resource where the first subframe;
The PRACH resource index that third node described in first subframe uses;
The index of the random access sequence of third node selection.
33. 8 to 32 any random access sequence transmission method according to claim 1, which is characterized in that described predefined Time window refers at least one of:
The configuration period of K1 subframe, K2 frame, the K3 random access channel resources,
Wherein, K1, K2, K3 are the positive integer more than or equal to 1, and value is configured by the first node or by system configuration.
34. random access sequence transmission method according to claim 1, which is characterized in that the second node is following At least one:
More than one terminal or set of terminal;
More than one MTC terminal or MTC terminal group;
More than one M2M terminal or M2M set of terminal;
More than one device-to-device (D2D) terminal or D2D set of terminal.
35. according to random access sequence transmission method described in claim 8 or 26, which is characterized in that the system configuration Refer to by standard configuration or is configured by network configuration or by network high level.
36. random access sequence transmission method according to claim 1, which is characterized in that the first node is following At least one:
Macro base station (Macro cell), micro-base station (Micro cell), femto base station (Pico cell), femto base station (Femto cell), Home eNodeB, low power nodes (LPN), relay station (Relay).
37. a kind of random access sequence transmitting device characterized by comprising
Configuration distributing module, for sending random access channel configuration message, wherein the random access channel configuration message is extremely It less include the random access channel resource configuration information of third node;
The third node is the set of second node in one or more P (j, q), the device further include:
Resource management module, for the second node to be divided into J set according to the first predefined rule, each set is fixed Justice is P (j), wherein 0≤j≤J-1, J are positive integer more than or equal to 1, by the second node in the P (j) according to the Two predefined rules are divided into a subset of Q (j), and each subclass defines P (j, q), and Q (j) is the son that set P (j) needs to divide The quantity of collection, Q (j) >=1,0≤q≤Q (j) -1;
First predefined rule is following one:
The repetition transmission times that Physical Broadcast Channel (PBCH) needs are successfully decoded in the second node is divided into J value area Between, second node segment according to locating for the number of repetition of PBCH when PBCH is successfully decoded determines what it should belong to Set P (j);
The repetition transmission times that main information block (MIB) needs are successfully decoded in the second node is divided into J value interval, Second node segment according to locating for the number of repetition of MIB when MIB is successfully decoded determines its set P that should belong to (j);
The repetition transmission times that system information block (SIB) needs are successfully decoded in the second node is divided into J value interval, Second node segment according to locating for the number of repetition of SIB when SIB is successfully decoded, it is determined that the set P of ownership (j);
The repetition transmission times that primary synchronization signal (PSS) needs are successfully decoded in the second node is divided into J value interval, Second node segment according to locating for the number of repetition of PSS when PSS is successfully decoded, it is determined that the set P of ownership (j);
The repetition transmission times that secondary synchronization signal (SSS) needs are successfully decoded in the second node is divided into J value interval, Second node segment according to locating for the number of repetition of SSS when SSS is successfully decoded, it is determined that the set P of ownership (j)。
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