CN107493608A

CN107493608A - A kind of method and apparatus for carrying out Stochastic accessing

Info

Publication number: CN107493608A
Application number: CN201610407288.3A
Authority: CN
Inventors: 贺媛
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-06-12
Filing date: 2016-06-12
Publication date: 2017-12-19
Anticipated expiration: 2036-06-12
Also published as: TW201743650A; WO2017215437A1; CN107493608B; TWI676400B

Abstract

The present embodiments relate to wireless communication technology field, more particularly to a kind of method and apparatus for carrying out Stochastic accessing, to solve present in prior art at present under network-intensive deployment scenario, because each cell coverage area is smaller, UE is in movement, the random access information in the system information of cell can be frequently read, causes UE power consumptions, handle the problem of complicated.Terminal is sent and carries out Stochastic accessing with other multiple specific random access informations of network side equipment identical, the specific random access information of identical that terminal is sent by multiple network side equipments by network side equipment of the embodiment of the present invention.The specific random access information of identical sent due to multiple network side equipments so that terminal need not frequently read the random access information in the system information of cell, so as to reduce terminal power consumption, reduce the complexity of processing；Further lifting system performance.

Description

A kind of method and apparatus for carrying out Stochastic accessing

Technical field

The present invention relates to wireless communication technology field, more particularly to a kind of method for carrying out Stochastic accessing and set It is standby.

Background technology

Competition Stochastic accessing refers to that eNB (evolution base station) distributes special Preamble without for UE (terminal) (leading) code, but Preamble codes and the Stochastic accessing initiated are randomly choosed by UE.Competition connects at random Enter 4 steps of process point, as shown in Figure 1A.Wherein, each step is referred to as a piece of news (message), by this 4 steps are referred to as Msg1~Msg4.

Msg1：Send Preamble codes.

ENB is responsible for Preamble codes and for sending the PRACH (Physical of Preamble codes Random Access Channel, Physical Random Access Channel) resource configured, pass through SI (System Information, system message) will in configuration broadcast to cell be resident UE

Msg2：Accidental access response.

ENB sends Msg2 in accidental access response window；

UE receives Msg2 in accidental access response window, if reception failure, (is returned according to backoff Move back) delay parameter, it is determined that at the time of initiating Stochastic accessing next time, and select under random access resource initiation Stochastic accessing.

Msg3：First time scheduled transmission.

UE transmits Msg3 on the ascending resource of distribution.

Msg4：Contention resolved.

Msg4 includes the related information of contention resolved, after UE is received, it is believed that contention resolved success.

UE does not receive Msg4 in contention resolved timer expiry, it is believed that contention resolved fails, then basis Backoff delay parameters, it is determined that at the time of initiating Stochastic accessing next time, and select random access resource to initiate Stochastic accessing next time.

Non-competing Stochastic accessing is that UE indicates according to eNB, is used on specified PRACH channel resources The Stochastic accessing that the Preamble codes specified are initiated.Non-competing Stochastic accessing is divided into 3 steps, as shown in Figure 1B. Wherein, this 3 step is referred to as Msg0~Msg2.

Msg0：Stochastic accessing indicates.

ENB can the specified UE initiating random access procedures of initiative when switching and downlink data reach.

Msg0 includes UE and initiates Preamble codes and the PRACH channels money that non-competing Stochastic accessing uses Source.

Msg1：Send Preamble codes.

UE initiates Stochastic accessing on the PRACH channel resources that eNB is specified with the Preamble codes specified. If specify multiple PRACH channel resources, UE available has PRACH channel resources at first A PRACH channel resource specified is randomly choosed in subframe to be used to carry Msg1.

Msg2：Accidental access response.

Msg2 format and content is identical with competition Stochastic accessing.

UE does not receive accidental access response in accidental access response window, then judges that this is non-competing random Access failure, initiated at random with the Preamble codes specified on next PRACH channel resources specified Access, is not limited by backoff parameters.

At present, the access information such as Preamble codes of each cell is different, and UE is to be resident some small Just it can receive and carry out according to the instruction initiating random access procedure of system information, only corresponding cell under area Feedback.And under network-intensive deployment scenario, each cell coverage area is smaller, UE when mobile, The random access information in the system information of cell can be frequently read, causes UE power consumptions, processing complicated.

In summary, at present under network-intensive deployment scenario, because each cell coverage area is smaller, UE can frequently read the random access information in the system information of cell, cause UE to consume in movement Electricity, processing are complicated.

The content of the invention

The embodiment of the present invention provides a kind of method and apparatus for carrying out Stochastic accessing, to solve in the prior art It is existing at present under network-intensive deployment scenario, because each cell coverage area is smaller, UE is being moved When dynamic, the random access information in the system information of cell can be frequently read, causes UE power consumptions, processing The problem of complicated.

A kind of method for carrying out Stochastic accessing provided in an embodiment of the present invention, this method include：

Network side equipment determines and other multiple specific random access informations of network side equipment identical；

The specific random access information is sent to terminal by the network side equipment, so that the terminal passes through The random access information is accessed.

Optionally, the network side equipment determines to believe with other multiple network side equipment identical Stochastic accessings Breath, including：

The network side equipment receives the specific random access information from control device.

Optionally, the specific random access information is sent to terminal by the network side equipment, including：

The specific random access information is sent to end by the network side equipment by broadcast or dedicated signaling End.

Optionally, after the specific random access information is sent to terminal by the network side equipment, also wrap Include：

The network side equipment receives the lead code included in the random access information that the terminal is sent First message；

The network side equipment sends in accidental access response window and includes the second of accidental access response information Message.

Optionally, what the network side equipment reception terminal was sent includes in the random access information After the first message of lead code, the comprising accidental access response information is sent in accidental access response window Before two message, in addition to：

The first message is reported the control device by the network side equipment, and determines to receive the control The first of control equipment sends instruction.

Optionally, the control device sends instruction notice to multiple network side equipments by described first；

Second comprising accidental access response information is sent in the network side equipment accidental access response window to disappear Before breath, in addition to：

The network side equipment sends other network side equipments of instruction mutually in the same time with receiving described first Second message is dispatched using physical downlink control channel PDCCH, and is addressed by RA-RNTI；

Second comprising accidental access response information is sent in the network side equipment accidental access response window to disappear Breath, including：

The network side equipment includes phase with receiving the described first other network side equipments transmission for sending instruction With the second message of accidental access response information.

The network side equipment sends other network side equipments of instruction in synchronization with receiving described first The second message for including identical accidental access response information is sent by identical running time-frequency resource.

Optionally, the network side equipment is sent in accidental access response window includes accidental access response information The second message, including：

The ascending resource and Temporary Cell Radio Network that the network side equipment configures according to the control device Temporary identifier C-RNTI, sent in accidental access response window and include the second of accidental access response information Message.

Optionally, the network side equipment is sent in accidental access response window includes accidental access response information The second message before, in addition to：

The network side equipment determines to meet transmission condition according to the metrical information for receiving first message.

Optionally, the network side equipment is sent in accidental access response window includes accidental access response information The second message after, in addition to：

The network side equipment is by the terminal received comprising the 3rd message of competition information and reception The metrical information of 3rd message is sent to the control device；

The network side equipment is sent after receive the control device second sends instruction to the terminal The 4th message comprising contention resolved information.

Control device determines specific random access information；

The specific random access information is sent multiple network side equipments by the control device, so that described more The specific random access information is sent to terminal by individual network side equipment, is passed through by the terminal described random Access information is accessed.

Optionally, the control device by the specific random access information send multiple network side equipments it Afterwards, in addition to：

The control device receive that multiple network side equipments report by same terminal send comprising described The first message of lead code in random access information；

The control device selects at least one network side equipment from the multiple network side equipment, and by One sends the network side equipment that instruction notifies selection, so that the network side equipment is sent to the terminal The second message comprising accidental access response information.

Optionally, the control device selects at least one network side to set from the multiple network side equipment It is standby, including：

The control device receives the metrical information of first message according to each network side equipment, from the multiple At least one network side equipment is selected in network side equipment.

Optionally, methods described also includes：

The control device is for the different ascending resource of the multiple network side equipment distribution and temporarily C-RNTI so that the network side equipment receive terminal transmission include the random access information in After the first message of lead code, by the ascending resource and interim C-RNTI in accidental access response window Send the second message for including accidental access response information.

What the multiple network side equipments of the control device reception reported includes competition by what same terminal was sent The metrical information that 3rd message of information and the multiple network side equipment receive the 3rd message is sent To the control device；

The control device receives the metrical information of the 3rd message according to each network side equipment, from multiple networks Side apparatus selects at least one network side equipment, and sends instruction by second and notify the network side of selection to set It is standby, so that the network side equipment sends the 4th message for including contention resolved information to the terminal.

Terminal receives the specific random access information of identical that multiple network side equipments are sent；

The terminal carries out Stochastic accessing according to the specific random access information.

Optionally, the terminal carries out Stochastic accessing according to the specific random access information, including：

The terminal is by the running time-frequency resource in the specific random access information, into multiple network side equipments Part or all of network side equipment send and include first of the lead code in the specific random access information Message；

The terminal receives the identical accidental access response that includes that at least one network side equipment is sent and believed Second message of breath.

Optionally, the terminal puts the lead code in the specific random access information with terminal binding In the first message.

Optionally, terminal iidentification is placed in the first message by the terminal.

Optionally, what at least one network side equipment of terminal reception was sent includes identical Stochastic accessing After second message of response message, in addition to：

The terminal sends at least one network side equipment for sending second message and includes competition information The 3rd message；

The terminal receives the 4th message for including contention resolved information that at least one network side equipment is sent.

Optionally, the terminal receives multiple second message；The terminal is to sending second message extremely A few network side equipment sends the 3rd message for including competition information, including：

If the uplink timing in the multiple second message shifts to an earlier date UL TA differences, the terminal selection At least one UL TA, and the 3rd message for including competition information is sent according to the UL TA of selection；Or

If the uplink grant UL grant and interim C-RNTI in the multiple second message is different, The terminal selects at least one set of UL grant and interim C-RNTI, and according to the UL grant of selection and faces When C-RNTI send and include the 3rd message of competition information.

Optionally, the terminal sends according to the UL grant and interim C-RNTI of selection and includes competition information The 3rd message, including：

The terminal is when needing to send multiple three message, according to the UL grant of selection, in same height The 3rd message using different interim C-RNTI scramblings is sent on the different ascending resources of frame.

A kind of network side equipment for carrying out Stochastic accessing provided in an embodiment of the present invention, the network side equipment bag Include：

First information determining module, for determining and other multiple specific Stochastic accessings of network side equipment identical Information；

First processing module, for the specific random access information to be sent into terminal, so that the terminal Accessed by the random access information.

Optionally, the first information determining module is specifically used for：

Receive the specific random access information from control device.

Optionally, the first processing module is specifically used for：

The specific random access information is sent to by terminal by broadcast or dedicated signaling.

Optionally, the first processing module is additionally operable to：

Receive the first message for including the lead code in the random access information that the terminal is sent；With The second message for including accidental access response information is sent in machine access response window.

Optionally, the first processing module is additionally operable to：

The first message is reported into the control device, and it is determined that receiving the first of the control device After sending instruction, the second message for including accidental access response information is sent in accidental access response window.

The first processing module is additionally operable to：

Mutually dispatched in the same time using PDCCH with receiving described first other network side equipments for sending instruction Second message, and addressed by RA-RNTI；With receiving described first other networks for sending instruction Side apparatus sends the second message for including identical accidental access response information.

The first processing module is specifically used for：

Pass through identical time-frequency in synchronization with receiving described first other network side equipments for sending instruction Resource sends the second message for including identical accidental access response information.

Optionally, the first processing module is specifically used for：

The ascending resource and interim C-RNTI configured according to the control device, in accidental access response window Send the second message for including accidental access response information.

Optionally, the first processing module is additionally operable to：

After determining to meet transmission condition according to the metrical information for receiving first message, in accidental access response window It is middle to send the second message for including accidental access response information.

Optionally, the first processing module is additionally operable to：

After sending the second message comprising accidental access response information in accidental access response window, it will receive The terminal the 3rd message comprising competition information and receive the metrical information hair of the 3rd message Give the control device；After receive the control device second sends instruction, sent to the terminal The 4th message comprising contention resolved information.

A kind of control device for carrying out Stochastic accessing provided in an embodiment of the present invention, the control device include：

Second information determination module, for determining specific random access information；

Second processing module, for the specific random access information to be sent into multiple network side equipments, so that The specific random access information is sent to terminal by the multiple network side equipment, passes through institute by the terminal Random access information is stated to be accessed.

Optionally, the Second processing module is additionally operable to：

After the specific random access information is sent multiple network side equipments by control device, multiple nets are received Network side apparatus report sent by same terminal include the lead code in the random access information the One message；At least one network side equipment is selected from the multiple network side equipment, and first is sent and is referred to Show the network side equipment for notifying selection, so that the network side equipment is sent comprising random to the terminal Access the second message of response message.

Optionally, the Second processing module is specifically used for：

The metrical information of first message is received according to each network side equipment, from the multiple network side equipment Select at least one network side equipment.

Optionally, the Second processing module is additionally operable to：

Different ascending resources and interim C-RNTI are distributed for the multiple network side equipment, so that the net Network side apparatus receive terminal transmission include the random access information in lead code first message after, Sent by the ascending resource and interim C-RNTI in accidental access response window and include accidental access response Second message of information.

Optionally, the Second processing module is additionally operable to：

After the specific random access information is sent into multiple network side equipments, multiple network side equipments are received What is reported is set by what same terminal was sent comprising the 3rd message of competition information and the multiple network side The standby metrical information for receiving the 3rd message is sent to the control device；Connect according to each network side equipment The metrical information of the 3rd message is received, at least one network side equipment is selected from multiple network side equipments, and by the Two send the network side equipment that instruction notifies selection, so that the network side equipment is sent to the terminal The 4th message comprising contention resolved information.

A kind of terminal for carrying out Stochastic accessing provided in an embodiment of the present invention, the terminal include：

Receiving module, the specific random access information of identical sent for receiving multiple network side equipments；

AM access module, for carrying out Stochastic accessing according to the specific random access information.

Optionally, the AM access module is specifically used for：

By the running time-frequency resource in the specific random access information, part into multiple network side equipments or Overall network side apparatus sends the first message for including the lead code in the specific random access information；Receive The second message for including identical accidental access response information that at least one network side equipment is sent.

Optionally, the AM access module is additionally operable to：

Lead code in the specific random access information with terminal binding is placed in the first message In.

Optionally, the AM access module is additionally operable to：

Terminal iidentification is placed in the first message.

Optionally, the AM access module is additionally operable to：

Receive at least one network side equipment is sent include identical accidental access response information second After message, the comprising competition information is sent at least one network side equipment for sending second message Three message；Receive the 4th message for including contention resolved information that at least one network side equipment is sent.

Optionally, the terminal receives multiple second message；

The AM access module is specifically used for：

If the UL TA in the multiple second message are different, at least one UL TA are selected, and according to choosing The UL TA selected send the 3rd message for including competition information；Or

If the UL grant and interim C-RNTI in the multiple second message is different, selection is at least one set of UL grant and interim C-RNTI, and sent according to the UL grant and interim C-RNTI of selection comprising competing Strive the 3rd message of information.

Optionally, the AM access module is specifically used for：

When needing to send multiple three message, according to the UL grant of selection, in the difference of same subframe The 3rd message using different interim C-RNTI scramblings is sent on ascending resource.

Network side equipment of the embodiment of the present invention sends terminal specific with other multiple network side equipment identicals Random access information, the specific random access information of identical that terminal is sent by multiple network side equipments are carried out Stochastic accessing.The specific random access information of identical sent due to multiple network side equipments so that terminal is not Need frequently to read the random access information in the system information of cell, so as to reduce terminal power consumption, drop The complexity of low processing；Further lifting system performance.

Brief description of the drawings

Technical scheme in order to illustrate the embodiments of the present invention more clearly, institute in being described below to embodiment The accompanying drawing needed to use is briefly introduced, it should be apparent that, drawings in the following description are only the present invention's Some embodiments, for one of ordinary skill in the art, do not paying the premise of creative labor Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Figure 1A is the schematic diagram that Stochastic accessing is competed in background technology；

Figure 1B is the schematic diagram of non-competing Stochastic accessing in background technology；

Fig. 2A be each TRP of 5G scenes of the embodiment of the present invention (Transmission Reception Point, Transmit receiving point) for the schematic diagram of cell；

Fig. 2 B are the schematic diagram that the multiple TRP of 5G scenes of the embodiment of the present invention are a cell；

Fig. 3 is the system structure diagram that the embodiment of the present invention carries out Stochastic accessing；

Fig. 4 is the structural representation of the first network side equipment of the embodiment of the present invention；

Fig. 5 is the structural representation of the first control device of the embodiment of the present invention；

Fig. 6 is the structural representation of the first terminal of the embodiment of the present invention；

Fig. 7 is the structural representation of second of network side equipment of the embodiment of the present invention；

Fig. 8 is the structural representation of second of control device of the embodiment of the present invention；

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

Figure 10 is the method flow schematic diagram of the first progress Stochastic accessing of the embodiment of the present invention；

Figure 11 is the method flow schematic diagram of second of progress Stochastic accessing of the embodiment of the present invention；

Figure 12 is the method flow schematic diagram of the third progress Stochastic accessing of the embodiment of the present invention；

Figure 13 is the method flow schematic diagram of the non-competing Stochastic accessing of the embodiment of the present invention；

Figure 14 is the method flow schematic diagram that the embodiment of the present invention competes Stochastic accessing；

Figure 15 is Stochastic accessing schematic diagram under the more TRP cells ideal forward pass/passbacks of the embodiment of the present invention；

Figure 16 is Stochastic accessing schematic diagram under the non-ideal forward pass/passback of the more TRP cells of the embodiment of the present invention；

Figure 17 is Stochastic accessing schematic diagram under virtual subdistrict of embodiment of the present invention ideal forward pass/passback；

Figure 18 is Stochastic accessing schematic diagram under the non-ideal forward pass/passback in virtual subdistrict of the embodiment of the present invention.

Embodiment

The scheme of the embodiment of the present invention can apply to the scene of any network-intensive deployment.One kind is set forth below The scene of network-intensive deployment.

As shown in Figure 2 A and 2 B, 5G scenes are the scene of network-intensive deployment.

1st, CU (central unit, centralized node)：

Centralized node is also known as CPU, is referred to as control device, can manage and control and be more Individual transmission receiving point TRP, CU can be a upper level nodes.For example, independent access network node：This Ground gateway (Local Gateway) or local controller (Local Controller), or core net node or Person OAM (Operation Administration and Maintenance, Operations, Administration and Maintenance) node； Can also be a base station, the base station is considered as super base station due to that can manage multiple base stations；Also may be used Be in C-RAN frameworks baseband pool (wherein, the C-RAN of the embodiment of the present invention can be centralization without Line access (Centralized-RAN)；Can also be cloud wireless access network (Cloud-RAN)), collection The baseband signal of the middle multiple RRH (Remote Radio Head, remote radio head) of processing；Can also be There is the CU of portion protocol stack function.

2nd, base station：

Base station is also known as TRP (Transmission Reception Point, transmit receiving point), and TRP can be with It is macro station, such as eNB, NB (base station)；Can also be small station, as LPN (low power node, Low power nodes), AP (Access Point, access point) etc.；Can also be the RRH in C-RAN frameworks； Can also be the DU (Distributed Unit, distributed unit) for having portion protocol stack function.One TRP Under have one or more cells (different frequencies or sector division), or one or more TRP compositions one Individual virtual subdistrict (Virtual Cell).

Under 5G networks, numerous TRP are controlled by a centralized node CU, a next TRP of TRP Cell, or multiple TRP form a virtual subdistrict, are preferable forward pass (fronthaul) between TRP and CU / passback (backhaul) or non-ideal forward pass/passback.

Under 5G network-intensive deployment scenarios, TRP working frequency is high for below 6GHz or more than 6GHz Frequency range, typical working frequency range：Below 6GHz, 3.4GHz~3.6GHz (LTE TDD Band 42)； More than 6GHz, outdoor high band 30GHz, indoor high band 70GHz.

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

As shown in figure 3, the system that the embodiment of the present invention carries out Stochastic accessing includes：Network side equipment 10, control Control equipment 20 and terminal 30.

Network side equipment 10, for determining to believe with the specific Stochastic accessing of other multiple network side equipment identicals Breath；The specific random access information is sent to terminal；

Control device 20, for determining specific random access information；The specific random access information is sent Multiple network side equipments；

Terminal 30, the specific random access information of identical sent for receiving multiple network side equipments；According to The specific random access information carries out Stochastic accessing.

Control device of the embodiment of the present invention can be that multiple network side equipments configure the specific Stochastic accessing of identical Information；

Accordingly, network side equipment receives the specific random access information from control device.

Wherein, specific random access information includes but is not limited to part or all of in following message：

Preamble codes, Root sequence (root sequence), Preamble transmit powers, PRACH time-frequencies Resource, accidental access response window, Conflict solving timer.

In force, control device can distribute the part or all of network side equipment of self-management to identical Specific random access information；Network side equipment can also be divided according to region, the same area will be in Network side equipment distribution the specific random access information of identical.

Optionally, the network side equipment will by broadcast or dedicated signaling (such as on-demand modes) The specific random access information is sent to terminal.

Specific random access information can be used for competition Stochastic accessing or non-competing random access procedure.For example, it is What is broadcasted in system information is the specific random access information for competing Stochastic accessing, and what proprietary signaling was sent It is the specific random access information for non-competing Stochastic accessing.In force, multiple TRP can be synchronous Send specific random access information.

Terminal in the specific random access information of identical for receiving multiple network side equipments and sending, if it is specific with There is leading (Preamble) code in machine access information, terminal can randomly choose lead code；If it is specific with There are PRACH running time-frequency resources in machine access information, then can randomly choose PRACH running time-frequency resources.

Terminal can send the first message of the lead code comprising selection by the PRACH running time-frequency resources of selection (i.e. Msg1).

If multiple network side equipments synchronously send specific random access information, terminal is multiple same when receiving The superposition of signal is walked, is advantageous to terminal and accurately receives random access information.

For competing Stochastic accessing, multiple terminals may select identical Preamble codes and different PRACH running time-frequency resources；Or different Preamble codes and identical PRACH running time-frequency resources, because This needs the solution that is at war with.

For non-competing Stochastic accessing, random access information is bound with terminal iidentification corresponding to first message Or mapping (mapping), therefore the solution that need not be at war with.

Wherein, can be that network side is allocated to terminal with the terminal mark of terminal binding, for example control is set It is standby that network side equipment is sent to by Msg0, and terminal is sent to by network side equipment.

Optionally, the terminal is by the running time-frequency resource in the specific random access information, to multiple networks Part or all of network side equipment in side apparatus is sent comprising leading in the specific random access information The first message of code；

The network side equipment sends in accidental access response window and includes the second of accidental access response information Message (i.e. Msg2)；

The mode that network side equipment sends the second message in accidental access response window has two kinds, and one kind is network It is the mode of preferable forward pass/passback between side apparatus and control device, another kind is that network side equipment and control are set It is the mode of non-ideal forward pass/passback between standby, is introduced in detail below.

First, it is the mode of preferable forward pass/passback between network side equipment and control device.

This mode, before what the network side equipment reception terminal was sent includes in the random access information After the first message of leading code, the first message is reported into the control device；

Accordingly, the control device receives the bag sent by same terminal that multiple network side equipments report First message containing the lead code in the random access information；

The control device selects at least one network side equipment from the multiple network side equipment, and by One sends the network side equipment that instruction notifies selection；

After the network side equipment determines that the first transmission for receiving the control device indicates, rung in Stochastic accessing Answer the second message that transmission includes accidental access response information in window.

Optionally, the control device selects at least one network side equipment from the multiple network side equipment When, the metrical information of first message can be received according to each network side equipment, is set from the multiple network side The standby middle at least one network side equipment of selection.

For example the best network side equipment of control device selection reception signal replys the second message, or from multiple Reception signal meets in the network side equipment of condition that selected section or overall network side apparatus reply identical the Two message.

Specifically, control device selects the maximum network side equipment of received signal strength according to metrical information；Or Person

Control device is according to the top-quality network side equipment of metrical information selection signal；Or

Control device selects received signal strength to meet that the first thresholding and/or signal quality are expired according to metrical information Foot meets the part or all of network side equipment of the second thresholding.Optionally, if selecting multiple network side equipments, Then multiple network side equipments reply the message of identical second, so can be to carry out reliability transmission.The One thresholding and the second thresholding can be that control device configuration or network side equipment configure, and also may be used To be human configuration.

After one or more network side equipments receive the first transmission instruction, the is sent in accidental access response window Two message.Due to carrying out Coordination Treatment by control device, when multiple network side equipments send the second message, Can be that multiple spot sends diversity transmission, equivalent to SFN (Single Frequency Network, SFN) Transmission.

Optionally, the network side equipment sends other network side equipments of instruction in phase with receiving described first PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) is used in the same time Second message is dispatched, and is addressed by RA-RNTI；

Specifically, multiple network side equipments dispatch the second equipment in synchronization using PDCCH, and pass through RA-RNTI is addressed；

Multiple network side equipments dispatch the second message in identical PDCCH resource (such as CCE), adjust The content of second message of degree is identical, i.e. the parameter included in Msg2 is identical.Or multiple nets A network side equipment in network side apparatus dispatches the second message using PDCCH, and multiple network side equipments exist The second message of identical content is sent on synchronization identical running time-frequency resource.An if network side equipment The second message is dispatched, then the resource for sending this second message can be that control device informs that other network sides are set It is standby, realize multiple network side equipments while send the message of identical second.It can certainly provide in the protocol.

2nd, it is the mode of non-ideal forward pass/passback between network side equipment and control device.

This mode be in order to reduce access delay, therefore multiple network side equipments send the second message without Control device is coordinated.

If non-ideal forward pass/return is preferable for time delay, the undesirable situation of handling capacity, equipment can be controlled The second message coordinated is sent, similar with the operation of preferable forward pass/passback, will not be repeated here.

Operation for non-ideal forward pass/passback time delay in the case of undesirable below.

The control device is for the different ascending resource of the multiple network side equipment distribution and temporarily C-RNTI；

Accordingly, the network side equipment receive terminal transmission include the random access information in before After the first message of leading code, the ascending resource and interim CRNTI that are configured according to the control device, random The second message for including accidental access response information is sent in access response window.

Specifically, control device distributes not to send multiple network side equipments of identical random access information in advance With ascending resource and interim C-RNTI (Cell Radio Network Temporary Identifier, cell without Line Network Temporary Identifier), guarantee does not conflict.

After multiple network side equipments receive the first message of terminal transmission, each network side equipment produces second and disappeared Breath, and the second message is sent in accidental access response window.Wherein, second caused by multiple network side equipments Message can be with identical, can also be different；If it is different, then the ascending resource included in the second message and interim C-RNTI (with RA-RNTI (random access-radio network temporary identifier, at random Access-Radio Network Temporary Identifier) it is similar, act as addressing) different, back-off parameter, UL TA (uplink Timing advance, uplink timing shift to an earlier date) can be corresponding with first message with identical or different Preamble code-phases are same, and the RA-RNTI for addressing is identical.

Further, the network side equipment judges whether to meet hair according to the metrical information for receiving first message Condition is sent, and after it is determined that meeting transmission condition, sends in accidental access response window and is rung comprising Stochastic accessing Answer the second message of information.

Multiple network side equipments judge whether to meet condition according to the metrical information for receiving first message, such as connect Receive whether signal intensity meets whether the 3rd threshold value and/or signal quality meet the 4th threshold value, meet condition Network side equipment reply the second message.

In order to reduce access delay, terminal iidentification is placed in the first message by the terminal, for simplifying Random access procedure, such as 4 step Stochastic accessings are become into 2 step Stochastic accessings.

Due to including terminal identification information in first message, control device will be obtained by terminal identification information The context (context) of terminal, this process need control device and core net CN to interact (example Authentication, certification process when being such as initially accessed, or identify UE during switching), therefore multiple network sides are set It is standby that first message is sent to control device, the second message is sent by control device dispatch network side apparatus, this Kind mode is similar with the operation of preferable forward pass/passback, will not be repeated here.Because control device disappears by first Breath has identified terminal, therefore terminal need not be at war with solution.

For non-competing random access procedure, terminal has successfully received one or more second in random response window Message just terminates intervention procedure.

If terminal reception failure, according to backoff (rollback) delay parameter, it is determined that initiate next time with At the time of machine accesses, and random access resource is selected to initiate Stochastic accessing next time.

For competing random access procedure, because terminal needs the solution that is at war with, therefore terminal is being rung at random Answer and the rear at least one net for sending second message of one or more second message is had successfully received in window Network side apparatus sends the 3rd message for including competition information.

Accordingly, the network side equipment by the 3rd message comprising competition information of the terminal received with And the metrical information of reception the 3rd message is sent to the control device；

The control device receives the metrical information of the 3rd message according to each network side equipment, from multiple networks Side apparatus selects at least one network side equipment, and sends instruction by second and notify the network side of selection to set It is standby, so that the network side equipment sends the 4th message for including contention resolved information to the terminal；

The network side equipment is sent after receive the control device second sends instruction to the terminal The 4th message comprising contention resolved information；

Wherein, comprising terminal identification information (for example, InitialUE-Identity in the 3rd message that terminal is sent (initial terminal mark) or ReestabUE-Identity (reconstruction terminal iidentification)) and/or terminal C-RNTI。

If terminal receives second message in random response window, terminal includes according in the second message Information send the 3rd message.

If terminal receives multiple second message that multiple network side equipments are sent in random response window, eventually End can select one or more second message, and send the 3rd according to the information in the second message of selection and disappear Breath.Specifically, if the UL TA included in multiple second message are different, terminal selects a UL TA Send one or more 3rd message.If the UL grant and interim C-RNTI that are included in multiple second message Difference, then middle terminal can select one or more groups of UL grant (uplink grant) and interim C-RNTI Send one or more 3rd message.

Specifically, if the UL TA in the multiple second message are different, the terminal selection is at least one UL TA, and the 3rd message for including competition information is sent according to the UL TA of selection；Or

If the UL grant and interim C-RNTI in the multiple second message is different, the terminal selection At least one set of UL grant and interim C-RNTI, and sent out according to the UL grant and interim C-RNTI of selection Send the 3rd message for including competition information.

Further, terminal receives multiple second message of multiple network side equipments transmissions in same subframe, and When the terminal sends multiple three message, if UL grant and interim C-RNTI is different, then UE On same subframe difference ascending resource transmission content it is identical but pass through different scrambling the 3rd message.That is institute UL grant of the terminal according to selection is stated, sends on the different ascending resources of same subframe and is faced using difference When C-RNTI scramblings the 3rd message, wherein needing the content of multiple 3rd message that sends identical.

Because the identification information in being included in the 3rd message and/or the C-RNTI of terminal are, it is necessary to which control device enters Row processing, therefore the 3rd message is sent to control device by one or more network side equipments, while report and connect Receive the metrical information of the 3rd message, including received signal strength, signal quality etc..

Control device identifies terminal by the C-RNTI of terminal identification information and/or terminal, and be at war with solution Certainly adjudicate, and dispatch network side apparatus sends the 4th message, that is, selects best network side equipment to send the 4th Message meets that multiple network side equipments of condition send the message of identical the 4th.

Specifically, if the terminal indicated in the 3rd message that one or more network side equipments are sent is identical , then control device is at war with and solves judgement, and dispatch network side apparatus sends the 4th message, and the 4th disappears The contention resolved information of this terminal is included in breath；

If the terminal indicated in the 3rd message that one or more network side equipments are sent is different, control Control equipment is at war with and solves judgement, and dispatch network side apparatus sends the 4th message, the 4th different message In include the contention resolved information of different terminals.

Terminal is received comprising after the related message of information the 4th of contention resolved, it is believed that contention resolved success.

If terminal receives the second message failure, according to backoff delay parameters, it is determined that initiating next time At the time of Stochastic accessing, and random access resource is selected to initiate Stochastic accessing next time.

If terminal receives the 4th message failure, according to backoff delay parameters, it is determined that initiating next time At the time of Stochastic accessing, and random access resource is selected to initiate Stochastic accessing next time.

Wherein, the network side equipment of the embodiment of the present invention can be base station, and base station is referred to as TRP here, TRP can be macro station, such as eNB, NB；The network side equipment of the embodiment of the present invention can also be small station Such as LPN, AP；The network side equipment of the embodiment of the present invention can also be the RRH in C-RAN frameworks； The network side equipment of the embodiment of the present invention can also be the DU for having portion protocol stack function.

As shown in figure 4, the first network side equipment of the embodiment of the present invention includes：

First information determining module 400, it is specific random with other multiple network side equipment identicals for determining Access information；

First processing module 401, for the specific random access information to be sent into terminal, so that described Terminal is accessed by the random access information.

Optionally, the first information determining module 400 is specifically used for：

Receive the specific random access information from control device.

Optionally, the first processing module 401 is specifically used for：

Optionally, the first processing module 401 is additionally operable to：

The first processing module 401 is additionally operable to：

Optionally, institute's control device sends instruction notice by described first and set to multiple network sides It is standby；

The first processing module 401 is specifically used for：

Optionally, the first processing module 401 is specifically used for：

The ascending resource and interim CRNTI configured according to the control device, sends out in accidental access response window Send the second message for including accidental access response information.

Optionally, the first processing module 401 is additionally operable to：

As shown in figure 5, the first control device of the embodiment of the present invention includes：

Second information determination module 500, for determining specific random access information；

Second processing module 501, for the specific random access information to be sent into multiple network side equipments, So that the specific random access information is sent to terminal by the multiple network side equipment, led to by the terminal The random access information is crossed to be accessed.

Optionally, the Second processing module 501 is additionally operable to：

Optionally, the Second processing module 501 is specifically used for：

Optionally, the Second processing module 501 is additionally operable to：

As shown in fig. 6, the first terminal of the embodiment of the present invention includes：

Receiving module 600, the specific random access information of identical sent for receiving multiple network side equipments；

AM access module 601, for carrying out Stochastic accessing according to the specific random access information.

Optionally, the AM access module 601 is specifically used for：

Optionally, the AM access module 601 is additionally operable to：

Terminal iidentification is placed in the first message.

Optionally, the AM access module 601 is additionally operable to：

Optionally, the terminal receives multiple second message；

The AM access module 601 is specifically used for：

Optionally, the AM access module 601 is specifically used for：

As shown in fig. 7, second of network side equipment of the embodiment of the present invention includes：

Processor 701, for reading the program in memory 704, perform following process：

It is determined that with other multiple specific random access informations of network side equipment identical；Will by transceiver 702 The specific random access information is sent to terminal, so that the terminal is carried out by the random access information Access.

Transceiver 702, for data to be received and sent under the control of processor 701.

Optionally, the processor 701 is specifically used for：

Receive the specific random access information from control device.

Optionally, the processor 701 is specifically used for：

Optionally, the processor 701 is additionally operable to：

The processor 701 is additionally operable to：

The processor 701 is specifically used for：

Optionally, the processor 701 is specifically used for：

Optionally, the processor 701 is additionally operable to：

Wherein, sending and receiving for above-mentioned processor 701 is all carried out by transceiver 702.

In the figure 7, bus architecture (being represented with bus 700), bus 700 can include any amount Interconnection bus and bridge, bus 700 by including the one or more processors that are represented by processor 701 and The various circuits for the memory that memory 704 represents link together.Bus 700 can also will be such as peripheral Various other circuits of equipment, voltage-stablizer and management circuit or the like link together, and these are all these Well known to field, therefore, no longer it is described further herein.EBI 703 is in bus 700 Interface is provided between transceiver 702.Transceiver 702 can be an element or multiple element, Such as multiple receivers and transmitter, there is provided for the list to be communicated over a transmission medium with various other devices Member.The data handled through processor 701 are transmitted on the radio medium by antenna 705, further, Antenna 705 also receives data and transfers data to processor 701.

Processor 701 is responsible for bus 700 and common processing, can also provide various functions, including Regularly, peripheral interface, voltage-regulation, power management and other control functions.And memory 704 can be with It is used to store the used data when performing operation of processor 701.

Optionally, processor 701 can be CPU (centre buries device), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), FPGA (Field-Programmable Gate Array, Field programmable gate array) or CPLD (Complex Programmable Logic Device, complexity can be compiled Journey logical device).

As shown in figure 8, second of control device of the embodiment of the present invention includes：

Processor 801, for reading the program in memory 804, perform following process：

Determine specific random access information；It is by transceiver 802 that the specific random access information transmission is more Individual network side equipment, so that the specific random access information is sent to end by the multiple network side equipment End, is accessed by the terminal by the random access information.

Transceiver 802, for data to be received and sent under the control of processor 801.

Optionally, the processor 801 is additionally operable to：

Optionally, the processor 801 is specifically used for：

Optionally, the processor 801 is additionally operable to：

Wherein, sending and receiving for above-mentioned processor 801 is all carried out by transceiver 802.

In fig. 8, bus architecture (being represented with bus 800), bus 800 can include any amount Interconnection bus and bridge, bus 800 by including the one or more processors that are represented by processor 801 and The various circuits for the memory that memory 804 represents link together.Bus 800 can also will be such as peripheral Various other circuits of equipment, voltage-stablizer and management circuit or the like link together, and these are all these Well known to field, therefore, no longer it is described further herein.EBI 803 is in bus 800 Interface is provided between transceiver 802.Transceiver 802 can be an element or multiple element, Such as multiple receivers and transmitter, there is provided for the list to be communicated over a transmission medium with various other devices Member.The data handled through processor 801 are transmitted on the radio medium by antenna 805, further, Antenna 805 also receives data and transfers data to processor 801.

Processor 801 is responsible for bus 800 and common processing, can also provide various functions, including Regularly, peripheral interface, voltage-regulation, power management and other control functions.And memory 804 can be with It is used to store the used data when performing operation of processor 801.

Optionally, processor 801 can be CPU, ASIC, FPGA or CPLD.

As shown in figure 9, second of terminal of the embodiment of the present invention includes：

Processor 901, for reading the program in memory 904, perform following process：

The specific random access information of identical of multiple network side equipments transmissions is received by transceiver 902；Root Stochastic accessing is carried out according to the specific random access information.

Transceiver 902, for data to be received and sent under the control of processor 901.

Optionally, the processor 901 is specifically used for：

Optionally, the processor 901 is additionally operable to：

Terminal iidentification is placed in the first message.

Optionally, the processor 901 is additionally operable to：

Optionally, the terminal receives multiple second message；

The processor 901 is specifically used for：

Optionally, the processor 901 is specifically used for：

Wherein, sending and receiving for above-mentioned processor 901 is all carried out by transceiver 902.

In fig.9, bus architecture (being represented with bus 900), bus 900 can include any amount Interconnection bus and bridge, bus 900 one or more will handle including what is represented by general processor 901 The various circuits for the memory that device and memory 904 represent link together.Bus 900 can also will such as Various other circuits of ancillary equipment, voltage-stablizer and management circuit or the like link together, and these are all It is it is known in the art, therefore, no longer it is described further herein.EBI 903 is total Interface is provided between line 900 and transceiver 902.Transceiver 902 can be an element or more Individual element, such as multiple receivers and transmitter, there is provided for leading to over a transmission medium with various other devices The unit of letter.Such as：Transceiver 902 receives external data from other equipment.Transceiver 902 is used for will place Data after reason device 901 is handled are sent to other equipment.Depending on the property of computing system, can also provide User interface 905, such as keypad, display, loudspeaker, microphone, control stick.

Processor 901 is responsible for bus 900 and common processing, and general operation system is run as described in foregoing System.And memory 904 can be used to store the used data when performing operation of processor 901.

Optionally, processor 901 can be CPU, ASIC, FPGA or CPLD.

Based on same inventive concept, a kind of method for carrying out Stochastic accessing is additionally provided in the embodiment of the present invention, Because the principle of this method solution problem is similar to the system of progress Stochastic accessing of the embodiment of the present invention, therefore should The implementation of method may refer to the implementation of network side equipment in system, repeats part and repeats no more.

As shown in Figure 10, the first method for carrying out Stochastic accessing of the embodiment of the present invention includes：

Step 1000, network side equipment determine to believe with the specific Stochastic accessing of other multiple network side equipment identicals Breath；

The specific random access information is sent to terminal by step 1001, the network side equipment, so that institute Terminal is stated to be accessed by the random access information.

Based on same inventive concept, a kind of method for carrying out Stochastic accessing is additionally provided in the embodiment of the present invention, Because the principle of this method solution problem is similar to the system of progress Stochastic accessing of the embodiment of the present invention, therefore should The implementation of method may refer to the implementation of control device in system, repeats part and repeats no more.

As shown in figure 11, the method for second of progress Stochastic accessing of the embodiment of the present invention includes：

Step 1100, control device determine specific random access information；

The specific random access information is sent multiple network side equipments by step 1101, the control device, So that the specific random access information is sent to terminal by the multiple network side equipment, led to by the terminal The random access information is crossed to be accessed.

Optionally, methods described also includes：

Based on same inventive concept, a kind of method for carrying out Stochastic accessing is additionally provided in the embodiment of the present invention, Because the principle of this method solution problem is similar to the system of progress Stochastic accessing of the embodiment of the present invention, therefore should The implementation of method may refer to the implementation of terminal in system, repeats part and repeats no more.

As shown in figure 12, the third method for carrying out Stochastic accessing of the embodiment of the present invention includes：

Step 1200, terminal receive the specific random access information of identical that multiple network side equipments are sent；

Step 1201, the terminal carry out Stochastic accessing according to the specific random access information.

Below so that under 5G network-intensive deployment scenarios, multiple TRP send the specific random access information of identical, UE and multiple TRP carries out the scene of Stochastic accessing to the non-competing Stochastic accessing of the present invention and competition Stochastic accessing Illustrate, specifically may refer to Figure 13 and Figure 14.

As shown in figure 13, the method for the non-competing Stochastic accessing of the embodiment of the present invention includes：

Step 1301：CU gives multiple TRP configuration specific random access informations of identical.

Wherein, specific random access information includes Preamble codes and Root sequence, Preamble Transmit power, PRACH running time-frequency resources, accidental access response window, Conflict solving timer etc..

Step 1302：Multiple TRP send the specific random access information of identical.

Specific random access information can be broadcast to UE or on-demand side in system information Formula is sent, i.e., is sent by proprietary signaling.Specific random access information can be used for competition Stochastic accessing or non-competing Strive random access procedure.For example, what is broadcasted in system information is connect at random for competing the specific of Stochastic accessing Enter information, and it is specific random access information for non-competing Stochastic accessing that proprietary signaling, which is sent,.In addition, Multiple TRP need synchronous send.

Step 1303：UE obtains the specific random access information of identical that multiple TRP are sent, and sends Msg1。

That is UE randomly chooses some Preamble code, some PRACH indicated in specific random access information After running time-frequency resource, Preamble codes are sent on this PRACH running time-frequency resource.Because multiple TRP are Synchronously send, therefore be the superposition of multiple synchronizing signals during UE receptions, be advantageous to UE and accurately receive Specific random access information.

For non-competing Stochastic accessing, specific random access information corresponding to Msg1 is tied up with UE marks Fixed or mapping (mapping), therefore the solution that need not be at war with.

In order to reduce access delay, UE identification informations can be included in Msg1, for simplifying Stochastic accessing Process, such as 4 step Stochastic accessings are become into 2 step Stochastic accessings.

Step 1304：After neighbouring multiple TRP receive the Msg1 of UE transmissions with UE, in Stochastic accessing Msg2 is sent in response window.

(backoff) parameter that retracts, Preamble codes corresponding with Msg1, up biography are included in Msg2 Defeated Timing Advance (UL TA), ascending resource (UL grant), interim C-RNTI (being used for safety) etc. Parameter.

TRP is addressed, RA-RNTI=1+ using PDCCH scheduling Msg2 by RA-RNTI T_id+10*f_id, i.e. RA-RNTI are determined by the PRACH running time-frequency resources position for carrying Msg1.

The mode that TRP sends Msg2 in accidental access response window has two kinds, one kind be TRP and CU it Between be preferable forward pass/passback mode, the side that it is non-ideal forward pass/passback between TRP and CU that another kind, which is, Formula, it is introduced in detail below.

First, between TRP and CU it is preferable forward pass/passback.

1st, Msg1 is sent to CU by multiple TRP, while reports the metrical information for receiving Msg1, including Received signal strength, signal quality etc..

2nd, CU is by the judgement such as identical Preamble codes, PRACH running time-frequency resources in multiple Msg1 This multiple TRP have received same UE Msg1, so as to carry out Coordination Treatment, select one it is best TRP replys Msg2, or multiple reception signals meet that the TRP of condition replys identical Msg2.

Specifically, the metrical information for receiving Msg1 according to reporting select the maximum TRP of received signal strength or The best TRP of person's signal quality, or selection received signal strength, signal quality meet the more of pre-determined threshold Individual TRP.Select multiple reception signals to meet that the TRP of condition replys identical Msg2, be in order to which carry out can By property transmission.Pre-determined threshold can be CU configurations or TRP self-configurings.

3rd, one or more TRP receive the instruction that CU sends Msg2, are sent out in accidental access response window Send Msg2.

Can be that multiple spot is sent when multiple TRP send Msg2 due to carrying out Coordination Treatment by CU Diversity transmission, transmitted equivalent to SFN (Single Frequency Network, SFN).Specifically, Multiple TRP dispatch Msg2 in synchronization using PDCCH, and are addressed by RA-RNTI, more Individual TRP dispatches Msg2 in identical PDCCH resource (such as CCE), and the Msg2's of scheduling is interior Appearance is identical, i.e. the parameter included in Msg2 is identical.An or TRP in multiple TRP Msg2 is dispatched using PDCCH, multiple TRP are sent on synchronization identical running time-frequency resource in identical The Msg2 of appearance.

2nd, between TRP and CU it is non-ideal forward pass/passback.

It is non-ideal forward pass/passback between TRP and CU, in order to reduce access delay, therefore multiple TRP Msg2 is sent without CU to coordinate.If non-ideal forward pass/return is preferable for time delay, handling capacity is undesirable Situation, can carry out CU coordinations Msg2 send, the operation of analogy ideal forward pass/passback.Below to be non- Operation in the case of preferable forward pass/passback time delay is undesirable.

1st, CU distributes different up money to send multiple TRP of identical specific random access information in advance Source, interim C-RNTI, guarantee do not conflict

2nd, after multiple TRP receive the Msg1 of UE transmissions, the different Msg2 of respective generation content, and Msg2 is sent in accidental access response window.

Wherein, ascending resource, the interim C-RNTI included in Msg2 is different, back-off parameter, UL TA Can be with identical or different, Preamble code-phases corresponding with Msg1 are same, the RA-RNTI phases for addressing Together.Further, multiple TRP judge whether to meet condition according to the metrical information for receiving Msg1, such as Whether received signal strength, signal quality meet pre-determined threshold, meet that the TRP of condition replys Msg2.

Because no CU coordinates, multiple TRP may dispatch Msg2 in synchronization using PDCCH, If different PDCCH resource scheduling Msg2, then UE can be properly received multiple different Msg2, if identical PDCCH resource dispatch Msg2, then UE may be properly received it is multiple not Same Msg2, it is also possible to which parsing does not come out.This is due to the same PDCCH moneys of multiple TRP synchronizations Msg2 is dispatched on source, while multiple TRP strength of transmitted signals is suitable, interferes with each other, this parsing is not Situation probability out is minimum, and there is also this problem in existing LTE system.

In force, if including UE identification informations in Msg1, CU will be obtained by UE identification informations UE context (context) is taken, this process needs CU and core net CN to interact (at the beginning of such as Begin access when authentication, the process such as certification, or identify UE during switching), therefore multiple TRP are by Msg1 CU is sent to, the Msg2 coordinated by CU is sent, this mode and the operation of preferable forward pass/passback It is similar, it will not be repeated here.Because CU by Msg1 has identified UE, therefore UE need not enter Row contention resolved.

Step 1305：UE has successfully received one or more Msg2 in random response window, then it is non-competing with Machine access is completed.

If UE reception failures, according to backoff delay parameters, it is determined that initiating Stochastic accessing next time At the time of, and select random access resource to initiate Stochastic accessing next time.

As shown in figure 14, the method for competition of embodiment of the present invention Stochastic accessing includes：

Wherein, step 1401~step 1404 is identical with step 1301~step 1304, will not be repeated here.

Difference is in step 1403, and for competing Stochastic accessing, multiple UE can select identical Preamble codes, different PRACH running time-frequency resources；Or different Preamble codes, phase can be selected Same PRACH running time-frequency resources.

Step 1405：UE has successfully received one or more Msg2 in random response window.

Multiple UE be at war with solution situation it is similar with existing LTE system.For example, UE1 and UE2 Initiation competition Stochastic accessing, Msg1 and Msg2 information are as shown in the table.

Step 1406：UE sends Msg3 to one or more TRP.

In Msg3 comprising UE identification informations (for example, InitialUE-Identity or ReestabUE-Identity) or UE C-RNTI.

If UE receives a Msg2 in random response window, then is sent out according to the information included in Msg2 Send Msg3.

If UE receives multiple Msg2 that multiple TRP are sent in random response window, then UE can be with Selection is one or more to send Msg3.

Specifically, if the UL TA included in multiple Msg2 are different, then UE selects a UL TA Send one or more Msg3.If UL grant included in multiple Msg2, interim C-RNTI are different, So UE selects one or more groups of UL grant, interim C-RNTI to send one or more Msg3.

Further, UE receives multiple Msg2 of multiple TRP transmissions in same subframe, if UL grant, Interim C-RNTI is different, then UE is sent on same subframe difference ascending resource by different interim The Msg3 of C-RNTI scramblings.

Step 1407：Msg3 and reception Msg3 metrical information are sent to CU by one or more TRP.

Due to including UE identification informations or UE C-RNTI in Msg3, it is necessary to CU processing, Therefore Msg3 is sent to CU by one or more TRP, while reports the metrical information for receiving Msg3, Including received signal strength, signal quality etc..

Step 1408：CU identifies UE by the C-RNTI of UE identification informations or UE, carries out competing Solution judgement is striven, and the Msg4 coordinated is sent.

Wherein, it is similar with sending Msg2 to send Msg4, that is, selects best TRP to send Msg4 or full Multiple TRP of sufficient condition send identical Msg4.

Specifically, if the UE indicated in the Msg3 that one or more TRP are sent is identical, then CU, which is at war with, solves judgement, and the Msg4 coordinated is sent, and this UE competition is included in Msg4 Solves information；

If the UE indicated in the Msg3 that one or more TRP are sent is different, then CU is carried out Contention resolved is adjudicated, and the Msg4 coordinated is sent, competing comprising different UE in different Msg4 Strive solution information.

Step 1409：TRP sends the Msg4 for including contention resolved information according to CU instruction to terminal.

Step 1410：After UE receives the Msg4 comprising contention resolved information, it is believed that contention resolved success.

If UE does not receive Msg4 in contention resolved timer expiry, it is believed that contention resolved fails, Then according to backoff delay parameters, it is determined that at the time of initiating Stochastic accessing next time, and select Stochastic accessing Resource initiates Stochastic accessing next time.

Several examples are set forth below the solution of the present invention is described in detail.

Embodiment one：As shown in figure 15, it is random under the more TRP cells ideal forward pass/passbacks of the embodiment of the present invention Access schematic diagram.

By taking the non-competing random access procedure during UE1 switches as an example, detailed process is as follows：

Step 1：UE1 is switched between multiple TRP cells under CU management.

For example, UE1 is switched to Target cell (TRP3 cells Cell3 from cell-of-origin (TRP2 cell Cell2) And/or TRP4 cell Cell4).CU can the non-competing Stochastic accessing mistake of initiative UE1 initiations in switching Journey.

Step 2：CU indicates that TRP2 sends non-competing specific random access information by proprietary signaling.

For example, sending Msg0 by RRC connections reconfiguration message, it is non-competing that Msg0 includes UE1 initiations The Preamble codes and PRACH channel resources that Stochastic accessing uses, the specific random access information and UE1 Mark (for example, UE1 C-RNTI) bound or mapped.

Step 3：UE1 obtains the non-competing specific random access information that TRP2 is sent, and sends Msg1.

Because specific random access information and UE1 mark corresponding to Msg1 are bound or are mapped, therefore Need not be at war with solution.

Step 4：Neighbouring TRP3 and TRP4 receives the Msg1 of UE1 transmissions with UE1.

Due to being preferable forward pass/passback between TRP and CU, Msg1 is sent to CU by TRP3 and TRP4, While the metrical information for receiving Msg1 is reported, including received signal strength (such as receiving power RP, received Power), signal quality (such as SINR).

CU judges it is TRP3 by identical Preamble codes, PRACH running time-frequency resources in 2 Msg1 Have received same UE Msg1 with TRP4, and by specific random access information corresponding to Msg1 with The relation that UE1 mark is bound or mapped, identifies it is UE1.

CU carries out Coordination Treatment, and received signal strength is selected most according to the metrical information for receiving Msg1 is reported TRP best big TRP or signal quality replys Msg2, such as TRP4 receiving power is more than TRP3 receiving power, CU selections TRP4 send Msg2.

TRP4 receives the instruction that CU sends Msg2, and Msg2 is sent in accidental access response window.Msg2 In comprising retract (backoff) parameter, Preamble codes corresponding with Msg1, uplink timing advance Measure (UL TA), ascending resource (UL grant), the parameter such as interim C-RNTI.TRP4 uses PDCCH Msg2 is dispatched, and is addressed by RA-RNTI.

Step 5：UE1 has successfully received a Msg2 in random response window, completes non-competing Stochastic accessing Process.

Embodiment two：As shown in figure 16, under the non-ideal forward pass/passback of the more TRP cells of the embodiment of the present invention with Machine accesses schematic diagram.

By taking the competition random access procedure in UE2 connection reconstructions as an example, detailed process is as follows：

Step 1：CU specific connects at random to TRP1 cells~TRP4 cell configuration identicals under its management Enter information, including when Preamble codes and Root sequence, Preamble transmit powers, PRACH Frequency resource, accidental access response window, Conflict solving timer etc..

Step 2：TRP1~TRP4 synchronously sends the specific random access information of identical in system information, uses In competition Stochastic accessing.

Step 3：Radio Link Failure (RLF) occurs for UE2, initiates connection reconstruction process.

It is specific random that UE2 obtains the identical that multiple TRP (such as TRP2, TRP3 and TRP4) send Access information, and send Msg1.

That is UE2 randomly choose indicated in specific random access information some Preamble codes (such as Preamble1), after some PRACH running time-frequency resource (such as PRACH1), sent on PRACH1 Preamble1。

Because 3 TRP are synchronously sent, thus UE2 receive when be multiple synchronizing signals superposition, Be advantageous to UE2 and accurately receive specific random access information.

Step 4：Neighbouring TRP2, TRP3 and TRP4 receive the Msg1 of UE2 transmissions with UE2.

Due to being non-ideal forward pass/passback (time delay is undesirable) between TRP and CU, during in order to reduce access Prolong, therefore 3 TRP send Msg2 without CU coordinations.

CU is different to send the TRP1 cells of identical specific random access information~TRP4 cells distribution in advance Ascending resource and interim C-RNTI, guarantee do not conflict.

3 TRP judge whether to meet condition according to the metrical information for receiving Msg1, such as reception signal is strong Whether degree, signal quality meet pre-determined threshold, meet that the TRP of condition replys Msg2.Wherein, TRP3 It is more than pre-determined threshold (CU configurations) with TRP4 receiving power, and TRP2 receiving power is less than in advance Gating limits, and therefore, TRP3 and TRP4 each produces the different Msg2 of content, and in accidental access response Msg2 is sent in window, the ascending resource included in Msg2, interim C-RNTI are different, and back-off parameter is different, UL TA identical (UE2 and TRP3 and TRP4 is apart from closer), Preamble corresponding with Msg1 Code-phase is same, and the RA-RNTI for addressing is identical.

Because no CU coordinates, TRP3 and TRP4 are adjusted in synchronization using different PDCCH resources Spend Msg2.

Step 5：UE2 has successfully received 2 Msg2 in random response window.

Step 6：Because UE2 in same subframe receives 2 Msg2, wherein UL grant that 2 TRP send Different with interim C-RNTI, then UE2 is sent on same subframe difference ascending resource by different interim The Msg3 of C-RNTI scramblings, in Msg3 comprising UE2 identification information (such as ReestabUE-Identity1)。

Step 7：Due to including UE2 identification information in Msg3, it is necessary to CU processing, therefore TRP3 2 Msg3 are sent to CU with TRP4, while report the metrical information for receiving Msg3, including are received Signal intensity, signal quality etc..

CU identifies UE2 by UE2 identification information, and judges the Msg3 middle fingers that 2 TRP are sent The UE shown is identical, solves judgement so as to be at war with, and selects the maximum TRP4 of RP to send Msg4.

TRP4 receives the instruction that CU sends Msg4, and Msg4 is sent before Conflict solving timer expiry, UE2 contention resolved information is included in Msg4.

Step 8：UE2 receives Msg4 before Conflict solving timer expiry, wherein the competition comprising UE2 Solves information, then UE2 thinks contention resolved success, completes competition random access procedure.

Embodiment three：As shown in figure 17, connect at random under virtual subdistrict of embodiment of the present invention ideal forward pass/passback Enter schematic diagram.

By taking the simplification random access procedure in the arrival of UE3 uplink/downlinks data as an example, specific workflow is as follows：

Step 1：Virtual subdistrict under CU management includes TRP1~TRP4, and CU is that 4 TRP configure phase Same specific random access information, including Preamble codes and Root sequence, Preamble are sent Power, PRACH running time-frequency resources, accidental access response window, Conflict solving timer etc..

Step 3：UE3 is the inactive state (inactive state) under connection mode (connected mode) UE.When UE3 has the arrival of uplink/downlink data, initiate to simplify random access procedure, be i.e. included in Msg1 UE is identified, and 4 step random access procedures can be reduced into 2 steps (only needing Msg1 and Msg2).

It is specific random that UE3 obtains the identical that multiple TRP (such as TRP2, TRP3 and TRP4) send Access information, and send Msg1, i.e. UE3 randomly chooses some indicated in specific random access information After Preamble codes (such as Preamble2), some PRACH running time-frequency resource (such as PRACH2), Preamble2 is sent on PRACH2.

Because 3 TRP are synchronously sent, thus UE3 receive when be multiple synchronizing signals superposition, Be advantageous to UE3 and accurately receive specific random access information.In order to reduce access delay, simplification connects at random During entering, UE3 identification information (such as UE3 C-RNTI) is included in UE3 Msg1.

Step 4：Neighbouring TRP2, TRP3 and TRP4 receive the Msg1 of UE3 transmissions with UE3.

Due to being preferable forward pass/passback between TRP and CU, TRP2, TRP3 and TRP4 send out Msg1 CU is given, while reports the metrical information for receiving Msg1, including received signal strength (such as receive work( Rate RP, received power), signal quality (such as SINR).

CU identifies UE3 by UE3 identification information, and judges the Msg1 middle fingers that 3 TRP are sent The UE shown is identical.

CU carry out Coordination Treatment, according to report receive Msg1 metrical information select received signal strength or Person's signal quality meets that multiple TRP of pre-determined threshold reply identical Msg2, such as TRP3 and TRP4 SINR be more than pre-determined threshold (CU configurations), and TRP2 SINR is less than pre-determined threshold, therefore, CU selects TRP3 and TRP4 to send identical Msg2, carries out reliability transmission.

TRP3 and TRP4 receives the instruction that CU sends Msg2, is sent in accidental access response window identical Msg2, be multiple spot send diversity transmission.Specifically, TRP3 and TRP4 uses PDCCH in synchronization Dispatch Msg2, and be addressed by C-RNTI, 2 TRP identical PDCCH resource (such as CCE Msg2 is dispatched on), the Msg2 of scheduling content is identical, i.e. the parameter included in Msg2 is Identical.Or TRP4 is identical in synchronization using PDCCH scheduling Msg2, TRP3 and TRP4 Running time-frequency resource on send the Msg2 of identical content.(backoff) parameter that retracts is included in Msg2, with Preamble codes corresponding to Msg1, uplink Timing Advance (UL TA), ascending resource (UL grant) Etc. parameter.

Step 5：UE3 has successfully received a Msg2 in random response window.

Because the TRP3 and TRP4 PDCCH scrambled with C-RNTI dispatch Msg2, UE3 is receiving tune Drag out a miserable existence and simplified random access procedure is just completed when making.

Example IV：As shown in figure 18, it is random under the non-ideal forward pass/passback in virtual subdistrict of the embodiment of the present invention Access schematic diagram.

By taking the competition random access procedure during UE4, UE5 are initially accessed as an example, specific workflow is as follows：

Step 3：UE4, UE5 are initially accessed, and initiate competition random access procedure.UE4, UE5 are obtained The specific random access information of identical that multiple TRP (such as TRP2, TRP3 and TRP4) send, and Send Msg1.

I.e. UE4, UE5 randomly choose some the Preamble code (example indicated in specific random access information As UE4, UE5 select Preamble3), (such as the UE4 selections of some PRACH running time-frequency resources PRACH3, UE5 select PRACH4) after, UE4 sends Preamble3, UE5 on PRACH3 Preamble3 is sent on PRACH4.

It is multiple synchronizing signals because 3 TRP are synchronously sent, therefore when UE4, UE5 reception Superposition, is advantageous to UE4, UE5 and accurately receives specific random access information.

Step 4：Neighbouring TRP2 and TRP3 receives the Msg1 of UE4 transmissions with UE4, adjacent with UE5 Near TRP3 and TRP4 receives the Msg1 of UE5 transmissions.

CU is that TRP1~TRP4 that identical specific random access information is sent in virtual subdistrict is distributed not in advance Same ascending resource, interim C-RNTI, guarantee do not conflict.

3 TRP judge whether to meet condition according to the metrical information for receiving Msg1, such as reception signal is strong Whether degree, signal quality meet pre-determined threshold, meet that the TRP of condition replys Msg2.Wherein, TRP2 It is more than pre-determined threshold (CU configurations) with TRP3 RP, therefore, in TRP2 and TRP3 are each produced Hold different Msg2, and Msg2 is sent in accidental access response window, the ascending resource included in Msg2, Interim C-RNTI is different, and back-off parameter is different, UL TA identical (UE4 and TRP2 and TRP3 distances It is closer), Preamble code-phases corresponding with Msg1 are with (such as Preamble3), for addressing RA-RNTI identical (such as RA-RNTI1, RA-RNTI1 are determined by PRACH3).

Similarly, TRP3 and TRP4 RP is more than pre-determined threshold (CU configurations), therefore, TRP3 and TRP4 each produces the different Msg2 of content, and sends Msg2 in accidental access response window, in Msg2 Comprising ascending resource, interim C-RNTI it is different, back-off parameter is different, UL TA identical (UE5 and TRP3 With TRP4 apart from closer), Preamble code-phases corresponding with Msg1 are same (such as Preamble3), RA-RNTI identical (such as RA-RNTI2, RA-RNTI2 are determined by PRACH4) for addressing.

Because no CU coordinates, TRP2 and TRP3 are being adjusted using different PDCCH resources at different moments Spend Msg2, TRP3 and TRP4 and dispatch Msg2 using different PDCCH resources in synchronization.

Step 5：UE4 has successfully received 2 Msg2 in random response window, and UE5 is in random response window Have successfully received 2 Msg2.

Step 6：Because UE4 in different subframes receives 2 Msg2 that 2 TRP send.

Wherein UL grant and interim C-RNTI is different, 1 Msg2 that UE4 selections first receive (such as The Msg2 that TRP2 is sent), and 1 Msg3 is sent on ascending resource, UE4 mark is included in Msg3 Know information (such as InitialUE-Identity1).

Because UE5 in same subframe receives 2 Msg2 that 2 TRP send, wherein UL grant, face When C-RNTI it is different, then UE5 is sent on same subframe difference ascending resource by the interim C-RNTI of difference UE5 identification information (such as InitialUE-Identity2) is included in the Msg3 of scrambling, Msg3.

Step 7：Due to including UE4 identification information in Msg3, it is necessary to CU processing, therefore TRP2 Msg3 is sent to CU.

CU identifies UE4 by UE4 identification information, and be at war with solution judgement, and selects TRP2 Send Msg4.

Similarly, due to including UE5 identification information in Msg3, it is necessary to CU processing, therefore TRP3 2 Msg3 are sent to CU with TRP4, while report the metrical information for receiving Msg3, including are received Signal intensity, signal quality etc..

CU identifies UE5 by UE5 identification information, and judges the Msg3 middle fingers that 2 TRP are sent The UE shown is identical, solves judgement so as to be at war with, and selects the maximum TRP4 of SINR to send Msg4。

TRP2 receives the instruction that CU sends Msg4, and Msg4 is sent before Conflict solving timer expiry, UE4 contention resolved information is included in Msg4.Similarly, TRP4 receives the instruction that CU sends Msg4, Msg4 is sent before Conflict solving timer expiry, UE5 contention resolved information is included in Msg4.

Step 8：UE4 and UE5 receives Msg4 before Conflict solving timer expiry, wherein comprising UE4, UE5 contention resolved information, UE4 and UE5 think contention resolved success, complete competition Stochastic accessing mistake Journey.

Above by reference to show according to the method, apparatus (system) and/or computer program of the embodiment of the present application produce The block diagram and/or flow chart of product describe the application.It should be understood that frame can be realized by computer program instructions Figure and/or a block of flowchart illustration and the combination of block diagram and/or the block of flowchart illustration.Can be by this A little computer program instructions are supplied to all-purpose computer, the processor of special-purpose computer and/or other programmable numbers According to processing unit, to produce machine so that via computer processor and/or other programmable datas processing dress The instruction for putting execution creates the method for being used for realizing function/action specified in block diagram and/or flow chart block.

Correspondingly, can also be implemented with hardware and/or software (including firmware, resident software, microcode etc.) The application.Further, the application can take computer can be used or computer-readable recording medium on Computer program product form, there is the computer realized in media as well can be used or computer-readable for it Program code, with by instruction execution system come use or combined command execution system and use.In the application Hereinafter, computer can be used or computer-readable medium can be arbitrary medium, it can include, store, Communication, transmission or transmission program, to be used by instruction execution system, device or equipment, or combined command Execution system, device or equipment use.

Obviously, those skilled in the art can carry out various changes and modification without departing from this hair to the present invention Bright spirit and scope.So, if the present invention these modifications and variations 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 including these changes and modification.

Claims

A kind of 1. method for carrying out Stochastic accessing, it is characterised in that this method includes：

Network side equipment determines and other multiple specific random access informations of network side equipment identical；

The specific random access information is sent to terminal by the network side equipment, so that the terminal passes through The random access information is accessed.
2. the method as described in claim 1, it is characterised in that the network side equipment determine with it is multiple Other network side equipment identical random access informations, including：

The network side equipment receives the specific random access information from control device.
3. the method as described in claim 1, it is characterised in that the network side equipment will be described specific Random access information is sent to terminal, including：

The specific random access information is sent to end by the network side equipment by broadcast or dedicated signaling End.
4. method as claimed in claim 2, it is characterised in that the network side equipment will be described specific Random access information is sent to after terminal, in addition to：

It is leading in the random access information that the network side equipment receives including for the terminal transmission Preamble code first messages；

The network side equipment sends in accidental access response window and includes the second of accidental access response information Message.
5. method as claimed in claim 4, it is characterised in that the network side equipment receives the end After the first message comprising the lead code in the random access information that end is sent, in accidental access response Before the second message comprising accidental access response information being sent in window, in addition to：

The first message is reported the control device by the network side equipment, and determines to receive the control The first of control equipment sends instruction.
6. method as claimed in claim 5, it is characterised in that the control device is sent out described first Instruction notice is sent to multiple network side equipments；

Second comprising accidental access response information is sent in the network side equipment accidental access response window to disappear Before breath, in addition to：

The network side equipment sends other network side equipments of instruction mutually in the same time with receiving described first Second message is dispatched using physical downlink control channel PDCCH, and passes through Stochastic accessing-wireless network Temporary mark RA-RNTI is addressed；

Second comprising accidental access response information is sent in the network side equipment accidental access response window to disappear Breath, including：

The network side equipment includes phase with receiving the described first other network side equipments transmission for sending instruction With the second message of accidental access response information.
7. method as claimed in claim 5, it is characterised in that the control device is sent out described first Instruction notice is sent to multiple network side equipments；

Second comprising accidental access response information is sent in the network side equipment accidental access response window to disappear Breath, including：

The network side equipment sends other network side equipments of instruction in synchronization with receiving described first The second message for including identical accidental access response information is sent by identical running time-frequency resource.
8. method as claimed in claim 4, it is characterised in that the network side equipment is in Stochastic accessing The second message for including accidental access response information is sent in response window, including：

The ascending resource and Temporary Cell Radio Network that the network side equipment configures according to the control device Temporary mark C-RNTI, second comprising accidental access response information is sent in accidental access response window and is disappeared Breath.
9. method as claimed in claim 8, it is characterised in that the network side equipment is in Stochastic accessing Before the second message comprising accidental access response information being sent in response window, in addition to：

The network side equipment determines to meet transmission condition according to the metrical information for receiving first message.
10. the method as described in claim 4~9 is any, it is characterised in that the network side equipment with After the second message comprising accidental access response information being sent in machine access response window, in addition to：

The network side equipment is by the terminal received comprising the 3rd message of competition information and reception The metrical information of 3rd message is sent to the control device；

The network side equipment is sent after receive the control device second sends instruction to the terminal The 4th message comprising contention resolved information.
A kind of 11. method for carrying out Stochastic accessing, it is characterised in that this method includes：

Control device determines specific random access information；

The specific random access information is sent multiple network side equipments by the control device, so that described more The specific random access information is sent to terminal by individual network side equipment, is passed through by the terminal described random Access information is accessed.
12. method as claimed in claim 11, it is characterised in that the control device will be described specific After random access information sends multiple network side equipments, in addition to：

The control device receive that multiple network side equipments report by same terminal send comprising described The first message of lead code in random access information；

The control device selects at least one network side equipment from the multiple network side equipment, and by One sends the network side equipment that instruction notifies selection, so that the network side equipment is sent to the terminal The second message comprising accidental access response information.
13. method as claimed in claim 12, it is characterised in that the control device is from the multiple At least one network side equipment is selected in network side equipment, including：

The control device receives the metrical information of first message according to each network side equipment, from the multiple At least one network side equipment is selected in network side equipment.
14. method as claimed in claim 11, it is characterised in that methods described also includes：

The control device is for the different ascending resource of the multiple network side equipment distribution and temporarily C-RNTI so that the network side equipment receive terminal transmission include the random access information in After the first message of lead code, by the ascending resource and interim C-RNTI in accidental access response window Send the second message for including accidental access response information.
15. the method as described in claim 11~14 is any, it is characterised in that the control device is by institute After stating the multiple network side equipments of specific random access information transmission, in addition to：

What the multiple network side equipments of the control device reception reported includes competition by what same terminal was sent The metrical information that 3rd message of information and the multiple network side equipment receive the 3rd message is sent To the control device；

The control device receives the metrical information of the 3rd message according to each network side equipment, from multiple networks Side apparatus selects at least one network side equipment, and sends instruction by second and notify the network side of selection to set It is standby, so that the network side equipment sends the 4th message for including contention resolved information to the terminal.
16. the method as described in claim 11~14 is any, it is characterised in that the specific Stochastic accessing Information includes but is not limited to part or all of in following message：

Lead code, root sequence Root sequence, lead code transmit power, PRACH running time-frequency resources, with Machine access response window, Conflict solving timer.
A kind of 17. method for carrying out Stochastic accessing, it is characterised in that this method includes：

Terminal receives the specific random access information of identical that multiple network side equipments are sent；

The terminal carries out Stochastic accessing according to the specific random access information.
18. method as claimed in claim 17, it is characterised in that the terminal according to it is described it is specific with Machine access information carries out Stochastic accessing, including：

The terminal is by the running time-frequency resource in the specific random access information, into multiple network side equipments Part or all of network side equipment send and include first of the lead code in the specific random access information Message；

The terminal receives the identical accidental access response that includes that at least one network side equipment is sent and believed Second message of breath.
19. method as claimed in claim 18, it is characterised in that the terminal will be described specific random Lead code in access information with terminal binding is placed in the first message.
20. method as claimed in claim 19, it is characterised in that terminal iidentification is placed in by the terminal In the first message.
21. method as claimed in claim 19, it is characterised in that the terminal receives at least one institute After the second message comprising identical accidental access response information for stating network side equipment transmission, in addition to：

The terminal sends at least one network side equipment for sending second message and includes competition information The 3rd message；

The terminal receives the 4th message for including contention resolved information that at least one network side equipment is sent.
22. method as claimed in claim 21, it is characterised in that the terminal receives multiple second and disappeared Breath；The terminal is sent comprising competition information at least one network side equipment for sending second message 3rd message, including：

If the uplink timing in the multiple second message shifts to an earlier date UL TA differences, the terminal selection At least one UL TA, and the 3rd message for including competition information is sent according to the UL TA of selection；Or

If the uplink grant UL grant and interim C-RNTI in the multiple second message is different, The terminal selects at least one set of UL grant and interim C-RNTI, and according to the UL grant of selection and faces When C-RNTI send and include the 3rd message of competition information.
23. method as claimed in claim 22, it is characterised in that the terminal is according to the UL grant of selection The 3rd message for including competition information is sent with interim C-RNTI, including：

The terminal is when needing to send multiple three message, according to the UL grant of selection, in same height The 3rd message using different interim C-RNTI scramblings is sent on the different ascending resources of frame.
24. a kind of network side equipment for carrying out Stochastic accessing, it is characterised in that the network side equipment includes：

First information determining module, for determining and other multiple specific Stochastic accessings of network side equipment identical Information；

First processing module, for the specific random access information to be sent into terminal, so that the terminal Accessed by the random access information.
25. network side equipment as claimed in claim 24, it is characterised in that the first information determines Module is specifically used for：

Receive the specific random access information from control device.
26. network side equipment as claimed in claim 24, it is characterised in that the first processing module It is specifically used for：

The specific random access information is sent to by terminal by broadcast or dedicated signaling.
27. network side equipment as claimed in claim 25, it is characterised in that the first processing module It is additionally operable to：

After the specific random access information is sent into terminal, it is described to receive including for the terminal transmission Leading Preamble codes first message in random access information；In accidental access response window send include with Machine accesses the second message of response message.
28. network side equipment as claimed in claim 27, it is characterised in that the first processing module It is specifically used for：

The first message is reported into the control device, and it is determined that receiving the first of the control device After sending instruction, the second message for including accidental access response information is sent in accidental access response window.
29. network side equipment as claimed in claim 28, it is characterised in that the control device is by institute The first transmission instruction notice is stated to multiple network side equipments；

The first processing module is specifically used for：

Physical down control is mutually being used in the same time with receiving described first other network side equipments for sending instruction Channel PDCCH processed dispatches second message, and is addressed by RA-RNTI；With receiving described first Other network side equipments for sending instruction send the second message for including identical accidental access response information.
30. network side equipment as claimed in claim 28, it is characterised in that the control device is by institute The first transmission instruction notice is stated to multiple network side equipments；

The first processing module is specifically used for：

Pass through identical time-frequency in synchronization with receiving described first other network side equipments for sending instruction Resource sends the second message for including identical accidental access response information.
31. network side equipment as claimed in claim 27, it is characterised in that the first processing module It is specifically used for：

The ascending resource and interim CRNTI configured according to the control device, sends out in accidental access response window Send the second message for including accidental access response information.
32. network side equipment as claimed in claim 31, it is characterised in that the first processing module It is additionally operable to：

After determining to meet transmission condition according to the metrical information for receiving first message, in accidental access response window It is middle to send the second message for including accidental access response information.
33. the network side equipment as described in claim 27~32 is any, it is characterised in that at described first Reason module is additionally operable to：

After sending the second message comprising accidental access response information in accidental access response window, it will receive The terminal the 3rd message comprising competition information and receive the metrical information hair of the 3rd message Give the control device；After receive the control device second sends instruction, sent to the terminal The 4th message comprising contention resolved information.
34. a kind of control device for carrying out Stochastic accessing, it is characterised in that the control device includes：

Second information determination module, for determining specific random access information；

Second processing module, for the specific random access information to be sent into multiple network side equipments, so that The specific random access information is sent to terminal by the multiple network side equipment, passes through institute by the terminal Random access information is stated to be accessed.
35. control device as claimed in claim 34, it is characterised in that the Second processing module is also For：

After the specific random access information is sent multiple network side equipments by control device, multiple nets are received Network side apparatus report sent by same terminal include the lead code in the random access information the One message；At least one network side equipment is selected from the multiple network side equipment, and first is sent and is referred to Show the network side equipment for notifying selection, so that the network side equipment is sent comprising random to the terminal Access the second message of response message.
36. control device as claimed in claim 35, it is characterised in that the Second processing module tool Body is used for：

The metrical information of first message is received according to each network side equipment, from the multiple network side equipment Select at least one network side equipment.
37. control device as claimed in claim 34, it is characterised in that the Second processing module is also For：

Different ascending resources and interim C-RNTI are distributed for the multiple network side equipment, so that the net Network side apparatus receive terminal transmission include the random access information in lead code first message after, Sent by the ascending resource and interim C-RNTI in accidental access response window and include accidental access response Second message of information.
38. the control device as described in claim 34~37 is any, it is characterised in that the second processing Module is additionally operable to：

After the specific random access information is sent into multiple network side equipments, multiple network side equipments are received What is reported is set by what same terminal was sent comprising the 3rd message of competition information and the multiple network side The standby metrical information for receiving the 3rd message is sent to the control device；Connect according to each network side equipment The metrical information of the 3rd message is received, at least one network side equipment is selected from multiple network side equipments, and by the Two send the network side equipment that instruction notifies selection, so that the network side equipment is sent to the terminal The 4th message comprising contention resolved information.
39. the control device as described in claim 34~37 is any, it is characterised in that described specific random Access information includes but is not limited to part or all of in following message：

Lead code, root sequence Root sequence, lead code transmit power, PRACH running time-frequency resources, with Machine access response window, Conflict solving timer.
40. a kind of terminal for carrying out Stochastic accessing, it is characterised in that the terminal includes：

Receiving module, the specific random access information of identical sent for receiving multiple network side equipments；

AM access module, for carrying out Stochastic accessing according to the specific random access information.
41. terminal as claimed in claim 40, it is characterised in that the AM access module is specifically used for：

By the running time-frequency resource in the specific random access information, part into multiple network side equipments or Overall network side apparatus sends the first message for including the lead code in the specific random access information；Receive The second message for including identical accidental access response information that at least one network side equipment is sent.
42. terminal as claimed in claim 41, it is characterised in that the AM access module is additionally operable to：

Lead code in the specific random access information with terminal binding is placed in the first message In.
43. terminal as claimed in claim 42, it is characterised in that the AM access module is additionally operable to：

Terminal iidentification is placed in the first message.
44. terminal as claimed in claim 42, it is characterised in that the AM access module is additionally operable to：

Receive at least one network side equipment is sent include identical accidental access response information second After message, the comprising competition information is sent at least one network side equipment for sending second message Three message；Receive the 4th message for including contention resolved information that at least one network side equipment is sent.
45. terminal as claimed in claim 44, it is characterised in that the receiving module receives multiple Two message；

The AM access module is specifically used for：

If the uplink timing in the multiple second message shifts to an earlier date UL TA differences, the terminal selection At least one UL TA, and the 3rd message for including competition information is sent according to the UL TA of selection；Or

If the uplink grant UL grant and interim C-RNTI in the multiple second message is different, The terminal selects at least one set of UL grant and interim C-RNTI, and according to the UL grant of selection and faces When C-RNTI send and include the 3rd message of competition information.
46. terminal as claimed in claim 45, it is characterised in that the AM access module is specifically used for：

When needing to send multiple three message, according to the UL grant of selection, in the difference of same subframe The 3rd message using different interim C-RNTI scramblings is sent on ascending resource.