CN106686691A

CN106686691A - Random access response RAR transmission method and related device

Info

Publication number: CN106686691A
Application number: CN201510752611.6A
Authority: CN
Inventors: 王磊; 邢艳萍
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2015-11-06
Filing date: 2015-11-06
Publication date: 2017-05-17
Anticipated expiration: 2035-11-06
Also published as: CN106686691B

Abstract

The invention discloses a random access response RAR transmission method and a related device in order to solve the problem that UE (User Equipment) and a base station have different understandings of RAR DCI ((Downlink Control Information) as the RAR windows of multiple PRACH (Physical Random Access Channel) opportunities overlap and different PRACH opportunities may correspondingly map out the same RA-RNTI (Random Access-Radio Network Temporary Identity). The method comprises the following steps: a terminal determines a PRACH opportunity for preamble sending, and determines the PRACH identity corresponding to the PRACH opportunity for preamble sending, wherein the PRACH identities corresponding to multiple continuous PRACH opportunities are different; and after sending a preamble in the PRACH opportunity for preamble sending, the terminal monitors and receives a random access response RAR corresponding to the PRACH opportunity for preamble sending in a random access response window according to the PRACH identity corresponding to the PRACH opportunity for preamble sending.

Description

A kind of accidental access response RAR transmission methods and relevant device

Technical field

The present invention relates to communication technical field, more particularly to a kind of accidental access response RAR transmission methods and Relevant device.

Background technology

In Long Term Evolution (Long Term Evolution, LTE) system, it is random that Stochastic accessing is divided into competition Access and non-competing Stochastic accessing, be illustrated in figure 1 competition random access procedure schematic diagram, as shown in Figure 2 For non-competing random access procedure schematic diagram.

In the random access procedure, base station (eNB) configuring preamble code (Preamble) form, Preamble And for send Preamble Physical Random Access Channel (Physical Random Access Channel, PRACH) resource.As a example by with FDD (FDD, Frequency Division Duplex), it is assumed that Network is using the configuration configuration PRACH resources of numbering 26, the corresponding PRACH resources tool of configuration numbering 26 Body is each radio frames referring to table 5.7.1-2 in TS36.211, i.e. Preamble forms 1, PRACH resources Subframe 2,5,8, be illustrated in figure 3 PRACH resource distribution schematic diagrams.With son in each radio frames PRACH chance of PRACH resource compositions of continuous two subframes of the starting of frame 2, with subframe 5 The PRACH chance of PRACH resource compositions for continuous two subframes for beginning, and it is initial with subframe 8 Continuous two subframes PRACH chance of PRACH resource compositions, each PRACH chances can To send a length as the Preamble of the employing Preamble forms 1 of 2 milliseconds (ms).

Base station is entered after the Preamble for receiving terminal (User Equipment, UE) transmission to UE Row accidental access response (Random Access Response, RAR).RAR must ring in Stochastic accessing Answer in window (RAR window) and send.Accidental access response window starting point is spaced 2ms with Msg1, and length is 2～10 subframes, are configured by high-level signaling, wherein, Msg1 is the message that UE sends Preamble.RAR Carried by Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH), UE The mark of its preamble for being sent whether is carried in by detecting RAR judge whether to have received with Machine accesses response.The PDSCH of RAR is carried by Downlink Control Information (Downlink Control Information, DCI) dispatch in identical subframe, carry the physical channel of the DCI by Stochastic accessing- Wireless network temporary indentification (Random Access-Radio Network Temporary Identity, RA-RNTI) identify.The value of RA-RNTI is determined by the resource location of PRACH, is formulated as：

RA-RNTI=1+t_id+10*f_id

Wherein t_id is first subframe for carrying PRACH channels, and value is 0=<t_id<10, f_id are The index on frequency domain in the subframe of PRACH places, span is 0=<f_id<6.

In enhancing MTC (Machine Type Communication, machine type that 3GPP Rel-13 are discussed Communication) in project, in order to support coverage enhancement, need to support to each message in random access procedure Repeat, RAR window are also required to according to RAR number of repetition respective extensions.Also, network can match somebody with somebody Multiple different PRACH levels of repetition are put, one determination of a PRACH levels of repetition correspondence Preamble numbers of repetition.Still example is assumed to be with above-mentioned, it is further assumed that network configuration certain PRACH The preamble numbers of repetition of levels of repetition are 4, then be repeated 4 times preamble in a PRACH chance The PRACH resources of form 1, as shown in Figure 4.And strengthen descending scheduling in MTC and adopt cross-subframe Scheduling, PDSCH by M-PDCCH dispatch, M-PDCCH from the PDSCH that it is dispatched in different subframes, Wherein, PDSCH starts from second available descending sub frame after M-PDCCH terminates.Wherein M-PDCCH refers to PDCCH (Physical Downlink Control Channel, the thing for MTC Reason down control channel).

In traditional LTE random access procedures, RAR window up to 10ms, the meter of RA-RNTI Calculate related to PRACH subframes.Therefore, a RA-RNTI is uniquely corresponded in a RAR window The response of PRACH chance, further determines base station by the mark of the preamble in RAR Preamble responds corresponding PRACH chances.

And strengthen MTC in, due to preamble carried out repeat and RAR window extended, Then the RAR window of possible difference PRACH chances have overlapping, in overlapping part it is possible that one The response of the multiple PRACH chances of RA-RNTI correspondences.Still example, network configuration are assumed to be with above-mentioned Preamble forms 1, the subframe 2,5,8 that PRACH resources are each radio frames.When preamble repeats When number of times is 3 integral multiple, the PRACH of preamble forms 1 is repeated 3 times in a PRACH chance Resource, according to the RA-RNTI all sames of calculated each the PRACH chance of above formula.Now, The corresponding PRACH machines of RAR of base station only cannot be indicated by the mark of the Preamble in RAR message Meeting.

For example, as shown in figure 5, Pi represents i ＆ lt PRACH chance, the UE of P1 is taken due to not having The PAR DCI of P1 are correctly parsed, needs to continue to monitor RAR DCI in RAR Window, due to The corresponding RA-RNTI of P2 may RA-RNTI corresponding with P1 it is identical, UE may be by the RAR of P2 DCI is interpreted as the RAR DCI for P1, causes the cause that understands differently with base station side, causes Stochastic accessing Failure.Such as when random access request density is higher, multiple Stochastic accessings are recurred, and can cause continuous The RAR Window of multiple PRACH chances have overlapping, according to the calculation of current RA-RNTI, The possible correspondence mappings of different PRACH chances go out identical RA-RNTI, cause UE with base station to RAR The understanding of DCI is differed, and delays random access time, causes the wasting of resources.

The content of the invention

The embodiment of the present invention provides a kind of accidental access response RAR transmission methods and relevant device, to solve Certainly because the RAR windows of multiple PRACH chances have overlap and different PRACH chances may be corresponded to and reflected Identical RA-RNTI is projected, the problem for causing UE to differ with understanding of the base station to RAR DCI.

Concrete technical scheme provided in an embodiment of the present invention is as follows：

A kind of accidental access response RAR transmission methods are embodiments provided, including：

Terminal determines the Physical Random Access Channel PRACH chances for sending lead code Preamble, and It is determined that the corresponding PRACH marks of the PRACH chances for sending lead code, wherein, it is continuous many The each self-corresponding PRACH marks of individual PRACH chances are differed；

The terminal is sent after lead code, according to institute in the PARCH chances for sending lead code State for sending the corresponding PRACH marks of the PRACH chances of lead code, in accidental access response window Monitor and receive the corresponding accidental access response RAR of PRACH chances for sending lead code.

It is preferred that once the PRACH chances are referred to according to the Preamble of network configuration repetition transmission time Count up to into a Preamble to repeat to send corresponding PRACH running time-frequency resources.

It is preferred that terminal determines the corresponding PRACH marks of the PRACH chances for sending lead code Know, including：

The terminal determines the set of corresponding PRACH marks, root according to the levels of repetition of the lead code The set identified according to the PRACH determines the PRACH chances corresponding for sending lead code Individual PRACH marks, wherein, the set of the PRACH marks is included according to default ordering The multiple different PRACH marks of arrangement.

It is preferred that the terminal is used to send lead code according to the set that the PRACH is identified determines PRACH chances corresponding PRACH marks, including：

Each included in the set that the terminal is identified according to the original position specified and the PRACH PRACH is identified, it is determined that the corresponding PRACH marks of the PRACH chances for sending lead code, The original position specified is used to determine the set distribution PRACH marks identified according to the PRACH First PRACH chance.

It is preferred that the PRACH mark numbers in the set of the PRACH marks are random no less than described Access the number for dispatching the Downlink Control Information DCI of RAR occurred in response window.

It is preferred that the collection of the corresponding PRACH marks of the levels of repetition of the lead code is combined into and is pre-configured with, Or, determined according to the notice of network side.

It is preferred that the terminal is according to the corresponding PRACH of PRACH chances for sending lead code Mark, monitors and receives the PRACH chances pair for sending lead code in accidental access response window The accidental access response RAR for answering, including：

The terminal determines that the physical down for dispatching RAR in the accidental access response window controls letter The corresponding PRACH in road marks, however, it is determined that the corresponding PRACH marks of the Physical Downlink Control Channel with The PRACH marks for sending the PRACH chances of lead code are identical, according to the physical down The Downlink Control Information DCI of control channel transmission, receives the PRACH chances for sending lead code Corresponding RAR, wherein, the PRACH is designated Stochastic accessing-wireless network temporary indentification RA-RNTI。

The descending control for dispatching RAR is monitored and obtained to the terminal in the accidental access response window Information DCI, carries the configured information of the PRACH marks of association in the DCI；

The terminal is determined indicated by the configured information of the PRACH marks carried in the DCI PRACH is identified, identical with the corresponding PRACH marks of the PRACH chances for sending lead code, It is used to send the corresponding RAR of PRACH chances of lead code according to the DCI is received.

The descending control for dispatching RAR is monitored and obtained to the terminal in the accidental access response window Information DCI, according to the DCI corresponding RAR is received, and the PRACH of association is carried in the RAR The configured information of chance；

The terminal is if it is determined that the configured information of the PRACH marks carried in the RAR for receiving, and described The corresponding PRACH marks of PRACH chances for sending lead code are identical, it is determined that the RAR for receiving is The corresponding RAR of PRACH chances for sending lead code.

The embodiment of the present invention additionally provides a kind of accidental access response RAR transmission methods, including：

The base station lead code that receiving terminal sends in Physical Random Access Channel PRACH chances, and determine The corresponding PRACH marks of PRACH chances of the lead code are received, wherein, continuous multiple PRACH The each self-corresponding PRACH marks of chance are differed；

The base station identifies according to the PRACH for determining, to the terminal in accidental access response window Send the corresponding accidental access response RAR of PRACH chances for receiving the lead code.

It is preferred that the base station determines the corresponding PRACH marks of the PRACH chances for receiving the lead code Know, including：

The base station determines the levels of repetition of the lead code, and it is right to be determined according to the levels of repetition of the lead code The set of the PRACH marks answered, before determining that the reception is described according to the set of PRACH marks The corresponding PRACH marks of PRACH chances of leading code, wherein, in the set of the PRACH marks Including the multiple different PRACH marks arranged according to default ordering.

It is preferred that the base station determines the reception lead code according to the set that the PRACH is identified PRACH chances corresponding PRACH marks, including：

Each included in the set that the base station is identified according to the original position specified and the PRACH PRACH is identified, and determines the corresponding PRACH marks of the PRACH chances for receiving the lead code, The original position specified is used to determine the set distribution PRACH marks identified according to the PRACH First PRACH chance.

It is preferred that the collection of the corresponding PRACH marks of the levels of repetition of the lead code is combined into and is pre-configured with.

It is preferred that the base station according to determine the PRACH mark, in accidental access response window to The terminal sends the corresponding accidental access response RAR of PRACH chances for receiving the lead code, including：

In the accidental access response window, being one is used under the physics for dispatching the RAR for the base station Row control channel distributes the PRACH marks of the determination, is passed by the Physical Downlink Control Channel The defeated Downlink Control Information DCI for dispatching the RAR, institute is sent according to the DCI to the terminal State the corresponding RAR of PRACH chances for receiving the lead code, wherein, the PRACH be designated with Machine access-wireless network temporary indentification RA-RNTI.

The base station sends the descending control for dispatching the RAR in the accidental access response window and believes Breath DCI, carries the configured information of the PRACH marks of the determination, according to described in the DCI DCI to the terminal sends the corresponding RAR of PRACH chances for receiving the lead code.

The base station sends the reception lead code in accidental access response window to the terminal The corresponding RAR of PRACH chances, carries the finger of the PRACH marks of the determination in the RAR Show information.

The embodiment of the present invention additionally provides a kind of terminal, including：

First processing module, for determining the Physical Random Access Channel for sending lead code Preamble PRACH chances, and determine the corresponding PRACH marks of the PRACH chances for sending lead code, Wherein, each self-corresponding PRACH marks of continuous multiple PRACH chances are differed；

Second processing module, for it is described for send lead code PARCH chances in send lead code Afterwards, according to the corresponding PRACH marks of the PRACH chances for sending lead code, connecing at random Enter to monitor in response window and receive the corresponding Stochastic accessing of the PRACH chances for sending lead code to ring Answer RAR.

It is preferred that the first processing module specifically for：

The set of corresponding PRACH marks is determined according to the levels of repetition of the lead code, according to described The set of PRACH marks determines that the PRACH chances for sending lead code are corresponding one PRACH is identified, wherein, the set of the PRACH marks includes being arranged according to default ordering The multiple different PRACH marks of row.

It is preferred that the first processing module specifically for：

According to each PRACH included in the set that specified original position and the PRACH are identified Mark, it is determined that the corresponding PRACH marks of the PRACH chances for sending lead code, the finger Fixed original position is used to determine the first of the set distribution PRACH marks identified according to the PRACH Individual PRACH chances.

It is preferred that the Second processing module specifically for：

Determine that the Physical Downlink Control Channel for dispatching RAR in the accidental access response window is corresponding PRACH is identified, however, it is determined that the corresponding PRACH marks of the Physical Downlink Control Channel are used for described The PRACH marks for sending the PRACH chances of lead code are identical, according to the Physical Downlink Control Channel The Downlink Control Information DCI of transmission, receives the PRACH chances for sending lead code corresponding RAR, wherein, the PRACH is designated Stochastic accessing-wireless network temporary indentification RA-RNTI.

It is preferred that the Second processing module specifically for：

The Downlink Control Information DCI for dispatching RAR is monitored and obtained in the accidental access response window, The configured information of the PRACH marks of association is carried in the DCI；

Determine the PRACH marks indicated by the configured information of the PRACH marks carried in the DCI Know, it is identical with the corresponding PRACH marks of the PRACH chances for sending lead code, according to institute State DCI and receive the corresponding RAR of PRACH chances for sending lead code.

It is preferred that the Second processing module specifically for：

The Downlink Control Information DCI for dispatching RAR is monitored and obtained in the accidental access response window, Corresponding RAR is received according to the DCI, the instruction of the PRACH chances of association is carried in the RAR Information；

If it is determined that the configured information of the PRACH marks carried in the RAR for receiving, with described for sending The corresponding PRACH marks of PRACH chances of lead code are identical, it is determined that the RAR for receiving is used for for described Send the corresponding RAR of PRACH chances of lead code.

The embodiment of the present invention additionally provides a kind of base station, including：

First processing module, sends for the receiving terminal in Physical Random Access Channel PRACH chances Lead code, and determine the corresponding PRACH marks of the PRACH chances for receiving the lead code, wherein, Continuously each self-corresponding PRACH marks of multiple PRACH chances are differed；

Second processing module, for according to the PRACH marks for determining, in accidental access response window The corresponding accidental access response RAR of PRACH chances for receiving the lead code is sent to the terminal.

It is preferred that the first processing module specifically for：

Determine the levels of repetition of the lead code, determined according to the levels of repetition of the lead code corresponding The set of PRACH marks, according to the set of the PRACH marks reception lead code is determined PRACH chances corresponding PRACH marks, wherein, the set of the PRACH marks includes The multiple different PRACH marks arranged according to default ordering.

It is preferred that the first processing module specifically for：

According to each PRACH included in the set that specified original position and the PRACH are identified Mark, determines the corresponding PRACH marks of the PRACH chances for receiving the lead code, the finger Fixed original position is used to determine the first of the set distribution PRACH marks identified according to the PRACH Individual PRACH chances.

It is preferred that the Second processing module specifically for：

It is a physical down control letter for being used to dispatch the RAR in the accidental access response window Road distributes the PRACH marks of the determination, is used to adjust by the physical downlink control channel transmission The Downlink Control Information DCI of the RAR is spent, the reception institute is sent to the terminal according to the DCI State the corresponding RAR of PRACH chances of lead code, wherein, the PRACH be designated Stochastic accessing- Wireless network temporary indentification RA-RNTI.

It is preferred that the Second processing module specifically for：

The Downlink Control Information DCI for dispatching the RAR is sent in the accidental access response window, The configured information of the PRACH marks of the determination is carried in the DCI, according to the DCI to institute State terminal and send the corresponding RAR of PRACH chances for receiving the lead code.

It is preferred that the Second processing module specifically for：

In accidental access response window, to the terminal PRACH machines for receiving the lead code are sent The corresponding RAR of meeting, carries the configured information of the PRACH marks of the determination in the RAR.

The embodiment of the present invention additionally provides another kind of terminal, including processor, memorizer and transceiver, wherein, Transceiver is used to receiving and sending data under the control of a processor, and default program is preserved in memorizer, Processor reads the program in memorizer, according to the program performing procedure below：

It is determined that for sending the Physical Random Access Channel PRACH chances of lead code Preamble, and determine The corresponding PRACH marks of the PRACH chances for sending lead code, wherein, it is continuous multiple The each self-corresponding PRACH marks of PRACH chances are differed；

Indicate that transceiver sends after lead code in the PARCH chances for sending lead code, according to The corresponding PRACH marks of the PRACH chances for sending lead code, indicate transceiver random Access and the corresponding Stochastic accessing of PRACH chances for sending lead code is monitored and received in response window Response RAR.

It is preferred that processor determines the collection of corresponding PRACH marks according to the levels of repetition of the lead code Close, be used to send the PRACH chances pair of lead code according to the set of PRACH marks determines The PRACH marks answered, wherein, the set of the PRACH marks is included according to default row The multiple different PRACH marks of row sequential arrangement.

It is preferred that including in set of the processor according to the original position specified and PRACH marks Each PRACH mark, it is determined that the corresponding PRACH of PRACH chances for sending lead code Mark, the original position specified is used to determine the set distribution PRACH identified according to the PRACH First PRACH chance of mark.

It is preferred that processor determines the physical down for dispatching RAR in the accidental access response window Control channel corresponding PRACH marks, however, it is determined that the corresponding PRACH of the Physical Downlink Control Channel Mark is identical with the PRACH marks for sending the PRACH chances of lead code, according to the thing The Downlink Control Information DCI of reason down control channel transmission, receives the PRACH for sending lead code The corresponding RAR of chance, wherein, the PRACH is designated Stochastic accessing-wireless network temporary indentification RA-RNTI。

It is preferred that processor indicates that transceiver is monitored and obtained for dispatching in the accidental access response window The Downlink Control Information DCI of RAR, carries the configured information of the PRACH marks of association in the DCI； Determine the PRACH marks indicated by the configured information of the PRACH marks carried in the DCI, It is identical with the corresponding PRACH marks of the PRACH chances for sending lead code, according to the DCI Receive the corresponding RAR of PRACH chances for sending lead code.

It is preferred that processor indicates that transceiver is monitored and obtained for dispatching in the accidental access response window The Downlink Control Information DCI of RAR, according to the DCI corresponding RAR is received, and is taken in the RAR The configured information of the PRACH chances with association；

The embodiment of the present invention additionally provides a kind of base station, including processor, memorizer and transceiver, wherein, Transceiver is used to receiving and sending data under the control of a processor, and default program is preserved in memorizer, Processor reads the program in memorizer, according to the program performing procedure below：

The transceiver lead code that receiving terminal sends in Physical Random Access Channel PRACH chances is indicated, And determine the corresponding PRACH marks of the PRACH chances for receiving the lead code, wherein, it is continuous multiple The each self-corresponding PRACH marks of PRACH chances are differed；

According to the PRACH marks for determining, indicate transceiver in accidental access response window to the end End sends the corresponding accidental access response RAR of PRACH chances for receiving the lead code.

It is preferred that processor determines the levels of repetition of the lead code, according to the levels of repetition of the lead code Determine the set of corresponding PRACH marks, the reception is determined according to the set of PRACH marks The corresponding PRACH marks of PRACH chances of the lead code, wherein, the PRACH marks Set includes the multiple different PRACH marks arranged according to default ordering.

It is preferred that including in set of the processor according to the original position specified and PRACH marks Each PRACH mark, determine the corresponding PRACH of PRACH chances for receiving the lead code Mark, the original position specified is used to determine the set distribution PRACH identified according to the PRACH First PRACH chance of mark.

It is preferred that processor is in the accidental access response window, being one is used to dispatch the RAR Physical Downlink Control Channel distributes the PRACH marks of the determination, is controlled by the physical down Transmission is used to dispatch the Downlink Control Information DCI of the RAR, indicates transceiver according to the DCI The corresponding RAR of PRACH chances for receiving the lead code is sent to the terminal, wherein, it is described PRACH is designated Stochastic accessing-wireless network temporary indentification RA-RNTI.

It is preferred that processor instruction transceiver sends described for dispatching in the accidental access response window The Downlink Control Information DCI of RAR, carries the PRACH marks of the determination in the DCI Configured information, the PRACH chances for receiving the lead code are sent according to the DCI to the terminal Corresponding RAR.

It is preferred that processor indicate transceiver in accidental access response window, to the terminal send described in connect The corresponding RAR of PRACH chances of the lead code is received, the described of the determination is carried in the RAR The configured information of PRACH marks.

It is each by configuring continuous multiple PRACH chances in the embodiment of the present invention based on above-mentioned technical proposal Self-corresponding PRACH marks are differed, and terminal determines that the PRACH chances for sending lead code are corresponding PRACH is identified, after sending lead code, according to the corresponding PRACH of PRACH chances for sending lead code Mark, monitors and receives corresponding RAR, so as in multiple PRACH chances in accidental access response window RAR windows when having overlap, it is to avoid occur identical PRACH mark in same RAR windows The corresponding RAR of PRACH chances, it is to avoid the problem that UE is differed with understanding of the base station to RAR DCI, Improve random access time, it is to avoid the wasting of resources.

Description of the drawings

Fig. 1 is competition random access procedure schematic diagram；

Fig. 2 is non-competing random access procedure schematic diagram；

Fig. 3 is PRACH resource distribution schematic diagrams；

Fig. 4 is the corresponding PRACH chances schematic diagram of PRACH levels of repetition that number of repetition is 4；

Fig. 5 is the process schematic that UE monitors RAR DCI；

Fig. 6 is the method flow schematic diagram of terminal receiving random access response in the embodiment of the present invention；

Fig. 7 is the method flow schematic diagram that base station sends accidental access response in the embodiment of the present invention；

Fig. 8 is the process schematic that UE monitors RAR in the embodiment of the present invention；

Fig. 9 is the structural representation of terminal in the embodiment of the present invention；

The structural representation of base station in Figure 10 embodiment of the present invention；

Figure 11 is the structural representation of another terminal in the embodiment of the present invention；

The structural representation of another base station in Figure 12 embodiment of the present invention.

Specific embodiment

In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing to this It is bright to be described in further detail, it is clear that described embodiment is only a part of embodiment of the invention, Rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing Go out all other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.

In following embodiment, PRACH marks are specifically as follows RA-RNTI.In enforcement, PRACH Mark can be any identification information that can uniquely indicate a PRACH chance.

In the embodiment of the present invention, as shown in fig. 6, the method detailed flow process of terminal receiving random access response is such as Under：

Step 601：Terminal is determined for sending the PRACH chances of lead code, and determines that this is used to send The corresponding PRACH marks of PRACH chances of lead code, wherein, continuous multiple PRACH chances are each Self-corresponding PRACH marks are differed.

In the embodiment of the present invention, define a PRACH chance and refer to according to the Preamble of network configuration weights Multiple the number of transmissions completes a Preamble to be repeated to send corresponding PRACH running time-frequency resources.

It is preferred that end side preserves right between the set of the levels of repetition of lead code and PRACH marks Should be related to, one set of lead code levels of repetition correspondence of rank, and the levels of repetition of lead code with PRACH levels of repetition is one-to-one, lead code levels of repetition one PRACH of correspondence of a rank Levels of repetition.

It is preferred that terminal determines the set of corresponding PRACH marks, root according to the levels of repetition of lead code Determine that this is used to send the PRACH chances of lead code according to the set of the PRACH marks corresponding one PRACH is identified, and the set of wherein PRACH marks is included according to many of default ordering arrangement Individual different PRACH marks.Specifically, the set of the PRACH marks is included according to default Ordering arrangement preset number PRACH marks, and each PRACH mark differs.

It is preferred that each included in the set according to specified original position and PRACH marks PRACH is identified, and determines this for sending the corresponding PRACH marks of the PRACH chances of lead code, its In, it is intended that original position be used to determine according to the set distribution PRACH marks of PRACH mark First PRACH chance.For example, original position is the original position of the radio frames of SFN=0.In enforcement, The original position specified can be with base station by signaling to terminal, it is also possible to which terminal is mutually arranged with base station 's.

Specifically, terminal according to this be used to sending lead code PRACH chances and specified original position it Between the number of PRACH chances that exists, and each PRACH for including in the set of PRACH marks The ordering of mark, determines this for sending the corresponding PRACH marks of the PRACH chances of lead code.

It is preferred that the number with different PRACH marks and continuous PRACH chances, i.e. PRACH The number of the PRACH marks included in the set of mark, no less than what is occurred in accidental access response window For dispatching the number of the DCI of RAR, with each the DCI correspondence for ensureing to occur in accidental access response window PRACH mark differ, so as to avoid the cause that understands differently of base station and terminal-pair RAR.Namely Say, the number with different PRACH marks and continuous PRACH chances, i.e. PRACH marks Set included in PRACH marks number, can be enough to distinguish in accidental access response window and occur The DCI for dispatching RAR.

Specifically, with the number of different PRACH marks and continuous PRACH chances, according to every The number of the subframe that the number and accidental access response window of the subframe that individual PRACH chances take is included is true It is fixed.For example, it is assumed that the number of sub-frames that each PRACH chance of certain levels of repetition takes is L1, RAR The length of window is L2 subframe, then wrap in the set of the PRACH marks for distributing to the levels of repetition The number of the PRACH marks for containing at least should be ceil (L 2/L1), wherein, " ceil " represents the fortune that rounds up Calculate.

In enforcement, the collection of the corresponding PRACH marks of levels of repetition of PRACH levels of repetition or lead code It is combined into and is pre-configured with, or, determined according to the notice of network side.Wherein, being pre-configured with can exist respectively Terminal and base station side carry out static configuration, or by protocol conventions.

Step 602：After terminal sends lead code in for the PARCH chances for transmitting Preamble, root It is used to transmit the corresponding PRACH marks of PRACH chances of Preamble according to this, in accidental access response This is monitored and received in window is used to transmit the corresponding RAR of PRACH chances of Preamble.

It is preferred that terminal is according to the corresponding PRACH marks of PRACH chances for transmitting Preamble, It is corresponding for transmitting the PRACH chances of Preamble that this is monitored and received in accidental access response window RAR, there is various specific implementations, including but not limited to following several：

First, terminal determines the Physical Downlink Control Channel for dispatching RAR in accidental access response window Corresponding PRACH marks, however, it is determined that the corresponding PRACH of Physical Downlink Control Channel is identified and is used to pass The PRACH marks of the PRACH chances of defeated Preamble are identical, passed according to the Physical Downlink Control Channel Defeated Downlink Control Information DCI, reception is the corresponding RAR of PRACH chances for transmitting Preamble. Specifically, terminal is if it is determined that the corresponding PRACH of Physical Downlink Control Channel is identified and is used to transmit The PRACH marks of the PRACH chances of Preamble are differed, then continued in the accidental access response window It is interior to monitor next Physical Downlink Control Channel, until determining that the Physical Downlink Control Channel for listening to is corresponding PRACH is identified, identical with the PRACH marks of the PRACH chances for transmitting Preamble, Or, until the accidental access response window terminates.

Wherein, the corresponding PRACH of Physical Downlink Control Channel for dispatching RAR is designated RA-RNTI.

Second, the DCI for dispatching RAR is monitored and obtained to terminal in accidental access response window, wherein, For the configured information that the PRACH that association is carried in the DCI for dispatching RAR is identified；Terminal determines DCI PRACH marks indicated by the configured information of the PRACH marks of middle carrying, and for transmitting Preamble PRACH chances corresponding PRACH marks it is identical, receiving this according to the DCI is used to transmit Preamble The corresponding RAR of PRACH chances.

Specifically, the configured information of PRACH marks is carried in the specify information domain of DCI.Wherein, refer to It can be newly-increased information field to determine information field.

Specifically, terminal is if it is determined that the configured information indication of the PRACH marks carried in the DCI for listening to The PRACH marks shown, and for transmitting the PRACH chances corresponding PRACH marks of Preamble Differ, continue the next DCI for dispatching RAR in the accidental access response window, until determining In the DCI for listening to carry PRACH mark configured information indicated by PRACH mark, with It is identical in the corresponding PRACH marks of the PRACH chances of transmission Preamble, or, until this is random Access response window to terminate.

3rd, the DCI for dispatching RAR is monitored and obtained to terminal in accidental access response window, according to The DCI receives corresponding RAR, wherein, the configured information of the PRACH chances of association is carried in RAR； Terminal if it is determined that the configured information of the PRACH marks carried in the RAR for receiving, and for transmitting The corresponding PRACH marks of PRACH chances of Preamble are identical, it is determined that the RAR for receiving is used for for this The corresponding RAR of PRACH chances of transmission Preamble.

Specifically, the configured information of PRACH marks is carried in the specify information domain of RAR.Wherein, it is intended that Information field can be newly-increased information field.

Specifically, terminal if it is determined that receive RAR in carry PRACH mark configured information, with The corresponding PRACH marks of PRACH chances for transmitting Preamble are differed, and are continued random at this Access and monitor in response window and receive next RAR, until determining what is carried in the RAR for receiving The configured information of PRACH marks, and for transmitting the corresponding PRACH of PRACH chances of Preamble Mark is identical, or, until the accidental access response window terminates.

In the embodiment of the present invention, as shown in fig. 7, base station sends the method detailed flow process of accidental access response such as Under：

Step 701：The base station lead code that receiving terminal sends in PRACH chances, and determine that reception should The corresponding PRACH marks of PRACH chances of lead code, wherein, continuous multiple PRACH chances are each Self-corresponding PRACH marks are differed.

Defined in the embodiment of the present invention, one time PRACH chances are referred to according to the Preamble of network configuration weights Multiple the number of transmissions completes a Preamble to be repeated to send corresponding PRACH running time-frequency resources.

It is preferred that base station side preserves right between the set of the levels of repetition of lead code and PRACH marks Should be related to, one set of lead code levels of repetition correspondence of rank, and the levels of repetition of lead code with PRACH levels of repetition is one-to-one, lead code levels of repetition one PRACH of correspondence of a rank Levels of repetition.

In enforcement, the collection of the corresponding PRACH marks of levels of repetition of lead code is combined into and is pre-configured with, for example By protocol conventions.

It is preferred that base station determines the levels of repetition of the lead code for receiving, determined according to the levels of repetition of lead code The set of corresponding PRACH marks, determines according to the set of the PRACH marks and receives lead code The corresponding PRACH marks of PRACH chances, wherein, the set of the PRACH marks is included according to pre- If ordering arrangement multiple different PRACH marks.

Specifically, the set of PRACH marks includes the preset number arranged according to default ordering PRACH marks, and each PRACH mark differs；

It is preferred that each included in set of the base station according to the original position and PRACH mark specified PRACH is identified, it is determined that the corresponding PRACH marks of the PRACH chances for receiving lead code, wherein, refer to Fixed original position is used to determine first according to the set distribution PRACH marks of the PRACH marks PRACH chances.

Specifically, base station exists according between the PRACH chances for receiving lead code and the original position specified PRACH chances number, and each PRACH for including in the set of the PRACH marks for determining The ordering of mark, it is determined that the corresponding PRACH marks of the PRACH chances for receiving lead code.

For example, it is intended that original position for SFN=0 radio frames original position.In enforcement, it is intended that Original position can be determined by base station after by signaling to terminal, it is also possible to base station is with terminal mutually about Fixed, such as pass through protocol conventions.

In being embodied as, because different levels of repetition takes different resources, base station can be according to lead code The resource of occupancy determines the levels of repetition of lead code.

Specifically, identify with different PRACH and include in the number of continuous PRACH chances The number of the PRACH marks included in the set of the number of PRACH chances, i.e. PRACH mark, The subframe that the number and accidental access response window of the subframe taken according to each PRACH chance is included Number determines.For example, it is assumed that the number of sub-frames that each PRACH chance of certain levels of repetition takes is L1, The length of RAR window is L2 subframe, then distribute to the set of the PRACH marks of the levels of repetition In include PRACH mark number at least should be ceil (L 2/L1), wherein, " ceil " represent take upwards Whole computing.

Step 702：Sent out to terminal in accidental access response window according to the PRACH marks for determining base station Send the corresponding RAR of PRACH chances for receiving the lead code.

It is preferred that base station is connecing at random according to the PRACH marks of the PRACH chances for receiving lead code Enter in response window and send the corresponding RAR of PRACH chances of reception lead code to terminal, there are various realization sides Formula, it is including but not limited to following several：

First, base station is the physical down control for being used to dispatch RAR in accidental access response window The PRACH marks of the PRACH chances of the reception lead code that channel distribution determines, by physical down control Transmission processed is used to dispatch the DCI of RAR, and the reception lead code is sent to terminal according to the DCI The corresponding RAR of PRACH chances.

Specifically, the corresponding PRACH of Physical Downlink Control Channel for dispatching RAR is designated RA-RNTI.

Second, base station sends the DCI for dispatching RAR in accidental access response window, takes in the DCI The configured information of the PRACH marks of the PRACH chances of the reception lead code with determining, according to the DCI The corresponding RAR of PRACH chances of the reception lead code is sent to terminal.

Specifically, the configured information of PRACH marks is carried in the specify information domain of DCI.Wherein, it is intended that Information field can be newly-increased information field.

3rd, base station sends the PRACH machines of the reception lead code in accidental access response window to terminal The corresponding RAR of meeting, carries the PRACH of the PRACH chances of the reception lead code of determination in the RAR The configured information of mark.

RAR transmission methods provided by the present invention are described in detail below by way of three specific embodiments.

First specific embodiment：

Using predefined or determine that a PRACH levels of repetition is corresponding by the way of network is semi-statically configured RA-RNTI gathers, and the set includes Ni RA-RNTI.

It is starting point that base station and terminal arrange the PRACH chances of a determination, according to the set in it is each The ordering circulation of RA-RNTI determines the RA-RNTI of each PRACH chance.Assume starting First RA-RNTI in the correspondence set of PRACH chances, then j-th PRACH chance is corresponding RA-RNTI is (jmod Ni) individual RA-RNTI.Specifically, first PRACH chances correspondence is gathered In the 1st RA-RNTI, the 2nd RA-RNTI ... ... in the correspondence set of the 2nd PRACH chance, The Ni RA-RNTI in the Ni PRACH chances correspondence set, the Ni+1 PRACH machine The 1st RA-RNTI in correspondingly gathering, by that analogy.

In one specific example, with predefined value as initial RA-RNTI, network configuration each The number of the corresponding RA-RNTI of PRACH levels of repetition.By initial RA-RNTI, according to PRACH Levels of repetition order from low to high, based on the corresponding RA-RNTI numbers of each PRACH levels of repetition, Determine the corresponding RA-RNTI set of each PRACH levels of repetition.Each RA-RNTI set of configuration At least ensure that the corresponding RAR of different PRACH chances occurred in a RAR window can be distinguished DCI.For example, it is assumed that the number of sub-frames that each PRACH chance of certain levels of repetition takes is L1, RAR Window length is L2, then the RA-RNTI included in the RA-RNTI set for distributing to the levels of repetition Number at least should be ceil (L2/L1).

For example, the initial value of protocol conventions RA-RNTI is expressed as using 16 systems：0001, network is matched somebody with somebody Put 4 PRACH levels of repetition Li, i=0,1,2,3.The each PRACH levels of repetition correspondence of network configuration RA-RNTI numbers Ni be respectively 20,10,8,4.Then the corresponding RA-RNTI of L0 are 0001-0014； The corresponding RA-RNTI of L1 are 0015-001E；The corresponding RA-RNTI of L2 are 001F-0026；L3 pair The RA-RNTI for answering is 0027-002A.

By taking PRACH levels of repetition 3 (L3) as an example, the corresponding RA-RNTI of each PRACH chances of determination is given Method example.Assume first PRACH chance in the wireless frame start position of protocol conventions SFN=0 For PRACH chances 1, PRACH chance number consecutivelies thereafter, then the correspondence of PRACH chances 1 It is 0028 that RA-RNTI is the correspondence RA-RNTI of 0027, PRACH chances 2 ..., PRACH chances 4 Correspondence RA-RNTI is 002A, and the correspondence RA-RNTI of PRACH chances 5 is 0027, by that analogy.

UE is selected for sending the PRACH chances of Preamble, and determines the PRACH chances correspondence RA-RNTI.RAR DCI are detected in RAR window with the RA-RNTI for determining.

As shown in figure 8, Pi represents PRACH chances i, the corresponding RA-RNTI values of PRACH chances 1 For RA-RNTI1, the corresponding RA-RNTI values of PRACH chances 2 are RA-RNTI2, then in PRACH The UE of random access request is sent in the correspondence resource of chance 2, RAR is first listened in RAR window2 DCI1, by contrasting with RA-RNTI2, has found the Physical Downlink Control Channel pair for transmitting the RAR DCI1 The RA-RNTI for answering is not RA-RNTI2.UE continues to monitor RAR DCI, until listening to RA-RNTI2 The RAR DCI of corresponding physical downlink control channel transmission, by under the corresponding physics of the RA-RNTI2 Row control channel receives RAR DCI2 and completes to merge, and in the frequency domain resource of the RAR DCI2 distribution Receive RAR PDSCH.

Second specific embodiment：

Increase information field in the DCI of scheduling RAR, carry in increased information field and associated with the DCI PRACH chances PRACH mark configured information, to indicate the corresponding PRACH of RAR DCI Chance.For example, N number of adjacent PRACH chances are if desired distinguished, then needs to increase in RAR DCI Plus ceil (log₂N) individual bit is for instruction PRACH chances.Hypothesis needs to distinguish 8 PRACH machines Meeting, then need to carry information fields of the 3bit for distinguishing different PRACH chances, tool in RAR DCI The body rule of correspondence is as shown in table 1.

Table 1

Specifically, when the PRACH chances in practical application scene be more than N, then after mould N with RAR DCI In compare for the information field that indicates PRACH chances.By taking table 1 as an example, if used in RAR DCI It is in the value of the information field for distinguishing different PRACH chances：001, represent that the RAR is PRACH machines 2,10,18 ... corresponding accidental access responses of meeting, by that analogy.

UE receives RAR DCI, according to being used to distinguish the information of different PRACH chances in RAR DCI Domain, knows the PRACH chances of the RAR DCI associations, if the PRACH of the RAR DCI associations Chance is different from the PRACH chances that UE takes, then continue to monitor RAR DCI in RAR window, RAR DCI until detecting the PRACH chances that UE takes, in the frequency domain that the RAR DCI are indicated RAR PDSCH are received in resource.

3rd specific embodiment：

It is used for by increasing in Media access contorl (Medium Access Control, MAC) RAR The information field of PRACH chances is indicated, the MAC of difference PRACH chances is distinguished by the information field RAR.For example, it is desired to distinguish N number of adjacent PRACH chances, then need to increase in MAC RAR ceil(log₂N) individual bit is used to indicate PRACH chances.Hypothesis needs to distinguish 8 PRACH chances, The information field for carrying 3bit is then needed to be used to distinguish different PRACH chances in MAC RAR, it is concrete right Should be regular as shown in table 2.

Table 2

Specifically, when practical application PRACH chances number be more than N, then after mould N again with RAR in For indicating that the information field of PRACH chances compares, the PRACH chances that RAR is associated are determined.With table As a example by 2, such as the information field value for being used to indicate PRACH chances in RAR is：001, represent the RAR The PRACH chances of instruction are 2,10,18 ... corresponding accidental access responses, by that analogy.

UE receives RAR DCI, and according to the instruction of RAR DCI MAC RAR are received, and solves parsing MAC RAR In for indicating the information field of PRACH chances, the MAC RAR phases are determined according to the value of the information field The PRACH chances of association.If being used to indicate the information field indication of PRACH chances in MAC RAR The PRACH chances shown, different from the PRACH chances that the UE takes, then UE continues in RAR RAR DCI are monitored in window, and MAC RAR are received according to the instruction of RAR DCI, parsing should MAC RAR, until the MAC RAR that the PRACH chances taken with UE are associated are received, or Until RAR window terminate.

Based on same inventive concept, a kind of terminal is provided in the embodiment of the present invention, the terminal is embodied as The description of said method embodiment is can be found in, is repeated part and is repeated no more, as shown in figure 9, the terminal is main Including：

First processing module 901, for determining that the physical accidental for sending lead code Preamble accesses letter Road PRACH chances, and determine the corresponding PRACH of PRACH chances for sending lead code Mark, wherein, continuously each self-corresponding PRACH marks of multiple PRACH chances are differed；

Second processing module 902, before sending in the PARCH chances for sending lead code After leading code, according to the PRACH chances for sending lead code corresponding PRACH marks, with For sending, the PRACH chances of lead code are corresponding to be connect at random described in monitoring in machine access response window and receiving Enter to respond RAR.

It is preferred that the first processing module specifically for：

It is preferred that the Second processing module specifically for：

Based on same inventive concept, a kind of base station is provided in the embodiment of the present invention, the base station is embodied as The description of said method embodiment is can be found in, is repeated part and is repeated no more, as shown in Figure 10, base station master Including：

First processing module 1001, sends out for the receiving terminal in Physical Random Access Channel PRACH chances The lead code sent, and determine the corresponding PRACH marks of the PRACH chances for receiving the lead code, its In, continuously each self-corresponding PRACH marks of multiple PRACH chances are differed；

Second processing module 1002, for according to the PRACH marks for determining, in accidental access response The corresponding accidental access response of PRACH chances of the reception lead code is sent in window to the terminal RAR。

It is preferred that the first processing module specifically for：

It is preferred that the Second processing module specifically for：

Based on same inventive concept, a kind of terminal, the concrete reality of the terminal are additionally provided in the embodiment of the present invention The description that can be found in said method embodiment part is applied, is repeated part and is repeated no more, as shown in figure 11, should Terminal mainly includes processor 1101, memorizer 1102 and transceiver 1103, wherein, transceiver 1103 For data to be received and sent under the control of processor 1101, default journey is preserved in memorizer 1102 Sequence, processor 1101 reads the program in memorizer 1102, according to the program performing procedure below：

Wherein, connected by bus between processor, memorizer and transceiver, bus architecture can include appointing The bus and bridge of the interconnection of meaning quantity, the one or more processors for specifically being represented by processor and memorizer generation The various circuits of the memorizer of table are linked together.Bus architecture can also be by such as ancillary equipment, manostat Link together with various other circuits of management circuit or the like, these are all well known in the art , therefore, no longer it is described further herein.EBI provides interface.Transceiver can be Multiple element, i.e., including transmitter and transceiver, there is provided for logical with various other devices over a transmission medium The unit of letter.Processor is responsible for bus architecture and common process, and memorizer can store processor and exist Perform the data used during operation.

Based on same inventive concept, a kind of base station, the concrete reality of the base station are additionally provided in the embodiment of the present invention The description that can be found in said method embodiment part is applied, is repeated part and is repeated no more, as shown in figure 12, should Base station mainly includes processor 1201, memorizer 1202 and transceiver 1203, wherein, transceiver 1203 For data to be received and sent under the control of processor 1201, default journey is preserved in memorizer 1202 Sequence, processor 1201 reads the program in memorizer 1202, according to the program performing procedure below：

Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter Calculation machine program product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or knot Close the form of the embodiment in terms of software and hardware.And, the present invention can be adopted and wherein wrapped at one or more Computer-usable storage medium containing computer usable program code (including but not limited to disk memory and Optical memory etc.) on implement computer program form.

The present invention is produced with reference to method according to embodiments of the present invention, equipment (system) and computer program The flow chart and/or block diagram of product is describing.It should be understood that can by computer program instructions flowchart and / or block diagram in each flow process and/or square frame and flow chart and/or the flow process in block diagram and/ Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedded The processor of formula datatron or other programmable data processing devices is producing a machine so that by calculating The instruction of the computing device of machine or other programmable data processing devices is produced for realizing in flow chart one The device of the function of specifying in individual flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.

These computer program instructions may be alternatively stored in can guide computer or other programmable datas process to set In the standby computer-readable memory for working in a specific way so that in being stored in the computer-readable memory Instruction produce and include the manufacture of command device, command device realization is in one flow process or multiple of flow chart The function of specifying in one square frame of flow process and/or block diagram or multiple square frames.

These computer program instructions also can be loaded in computer or other programmable data processing devices, made Obtain and series of operation steps is performed on computer or other programmable devices to produce computer implemented place Reason, so as to the instruction performed on computer or other programmable devices is provided for realizing in flow chart one The step of function of specifying in flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.

Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention Bright spirit and scope.So, if the present invention these modification and modification belong to the claims in the present invention and Within the scope of its equivalent technologies, then the present invention is also intended to comprising these changes and modification.

Claims

1. a kind of accidental access response RAR transmission methods, it is characterised in that include：

2. the method for claim 1, it is characterised in that once the PRACH chances are referred to According to corresponding to the Preamble iterative transfer times of network configuration complete a Preamble repetition transmission PRACH running time-frequency resources.

3. the method for claim 1, it is characterised in that terminal determines described for sending leading The corresponding PRACH marks of PRACH chances of code, including：

4. method as claimed in claim 3, the terminal is true according to the set that the PRACH is identified The fixed corresponding PRACH marks of PRACH chances for being used to send lead code, including：

5. method as claimed in claim 3, it is characterised in that in the set of the PRACH marks PRACH mark numbers no less than occurring in the accidental access response window for dispatching RAR under The number of row control information DCI.

6. method as claimed in claim 3, it is characterised in that the levels of repetition correspondence of the lead code The collection of PRACH marks be combined into and be pre-configured with, or, determined according to the notice of network side.

7. the method as described in any one of claim 1-6, it is characterised in that the terminal is according to described The corresponding PRACH marks of PRACH chances for sending lead code, supervise in accidental access response window The corresponding accidental access response RAR of PRACH chances for sending lead code is listened and receives, including：

8. the method as described in any one of claim 1-6, it is characterised in that the terminal is according to described The corresponding PRACH marks of PRACH chances for sending lead code, supervise in accidental access response window The corresponding accidental access response RAR of PRACH chances for sending lead code is listened and receives, including：

9. the method as described in any one of claim 1-6, it is characterised in that the terminal is according to described The corresponding PRACH marks of PRACH chances for sending lead code, supervise in accidental access response window The corresponding accidental access response RAR of PRACH chances for sending lead code is listened and receives, including：

10. a kind of accidental access response RAR transmission methods, it is characterised in that include：

11. methods as claimed in claim 10, it is characterised in that once the PRACH chances are referred to According to corresponding to the Preamble iterative transfer times of network configuration complete a Preamble repetition transmission PRACH running time-frequency resources.

12. methods as claimed in claim 10, it is characterised in that before the base station determines that reception is described The corresponding PRACH marks of PRACH chances of leading code, including：

13. methods as claimed in claim 12, it is characterised in that the base station is according to the PRACH The set of mark determines the corresponding PRACH marks of the PRACH chances for receiving the lead code, bag Include：

14. methods as claimed in claim 12, it is characterised in that the levels of repetition pair of the lead code The collection of the PRACH marks answered is combined into and is pre-configured with.

15. methods as claimed in claim 13, it is characterised in that the set of the PRACH marks In PRACH mark numbers no less than occurring in the accidental access response window for dispatching RAR's The number of Downlink Control Information DCI.

16. methods as described in any one of claim 10-15, it is characterised in that the base station is according to really Fixed PRACH marks, send to the terminal in accidental access response window and receive the lead code The corresponding accidental access response RAR of PRACH chances, including：

17. methods as described in any one of claim 10-15, it is characterised in that the base station is according to really Fixed PRACH marks, send to the terminal in accidental access response window and receive the lead code The corresponding accidental access response RAR of PRACH chances, including：

18. methods as described in any one of claim 10-15, it is characterised in that the base station is according to really Fixed PRACH marks, send to the terminal in accidental access response window and receive the lead code The corresponding accidental access response RAR of PRACH chances, including：

19. a kind of terminals, it is characterised in that include：

20. terminals as claimed in claim 19, it is characterised in that once the PRACH chances are Refer to according to corresponding to the Preamble iterative transfer times of network configuration complete a Preamble repetition transmission PRACH running time-frequency resources.

21. terminals as claimed in claim 19, it is characterised in that the first processing module is specifically used In：

22. terminals as claimed in claim 21, it is characterised in that the first processing module is specifically used In：

23. terminals as described in any one of claim 19-22, it is characterised in that the second processing mould Block specifically for：

24. terminals as described in any one of claim 19-22, it is characterised in that the second processing mould Block specifically for：

25. terminals as described in any one of claim 19-22, it is characterised in that the second processing mould Block specifically for：

26. a kind of base stations, it is characterised in that include：

27. base stations as claimed in claim 26, it is characterised in that once the PRACH chances are Refer to according to corresponding to the Preamble iterative transfer times of network configuration complete a Preamble repetition transmission PRACH running time-frequency resources.

28. base stations as claimed in claim 26, it is characterised in that the first processing module is specifically used In：

29. base stations as claimed in claim 28, it is characterised in that the first processing module is specifically used In：

30. base stations as described in any one of claim 26-29, it is characterised in that the second processing mould Block specifically for：

31. base stations as described in any one of claim 26-29, it is characterised in that the second processing mould Block specifically for：

32. base stations as described in any one of claim 26-29, it is characterised in that the second processing mould Block specifically for：