CN103688588B - Information transferring method, network node, user equipment and system - Google Patents
Information transferring method, network node, user equipment and system Download PDFInfo
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- CN103688588B CN103688588B CN201280001151.8A CN201280001151A CN103688588B CN 103688588 B CN103688588 B CN 103688588B CN 201280001151 A CN201280001151 A CN 201280001151A CN 103688588 B CN103688588 B CN 103688588B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
Abstract
The embodiment of the invention discloses a kind of information transferring method, network node, user equipment and system, it is related to field of communication technology, public search space resource can be saved, increases random access capacity.The method of the present invention includes：Receive the Physical Random Access Channel PRACH message that user equipment (UE) is sent；PRACH configuration informations according to entrained by the PRACH message determine target search space, wherein the target search space is one at least two search spaces that network node provides, each search space corresponds to one group of PRACH configuration information；The downlink control message of scheduling accidental access response message is sent to the UE by the target search space.The embodiment of the present invention is mainly used in the message transmitting procedure of random access.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of information transferring method, network node, user equipment and it is
System.
Background technology
In Long Term Evolution（Long Term Evolution, LTE）In system, control area is used to transmit user equipment
（User Equipment, UE）Control information, it includes public search space and the specific search spaces of UE.Wherein UE is specific to be searched
Rope space carries the Physical Downlink Control Channel of particular UE（PhysicalDownlink Control Channel, PDCCH）, and
Public search space is used to carry the public PDCCH of multiple UE.For example, scheduling system message can be carried in public search space
PDCCH of PDCCH, scheduling accidental access response message with paging message etc..
The process of UE random access is as follows in the prior art：UE sends a Physical Random Access Channel to network node
The targeting sequencing of (Physical Random Access Channel, PRACH), after network node receives the targeting sequencing,
The UE being sent to by PDCCH one accidental access response message of scheduling of public search space in the public search space.UE
The PDCCH of scheduling accidental access response message is detected in public search space and obtains accidental access response message, should be with
An interim scrambler and other timing configured information are carried in machine access response message.Then, UE sends one to network node
A upstream data bag, carries UE identification informations and the interim scrambler got in the upstream data bag.In this way, work as network node
Receive upstream data bag and parse when obtaining interim scrambler and UE identification information, just complete the random access of UE.
But continuously improving due to LTE system, in enhancing Long Term Evolution（LTE-Advanced, LTE-A）Deng it is follow-up more
In advanced LTE versions, enhancing Physical Downlink Control Channel is introduced（EnhancedPDCCH, e-PDCCH).Therefore, at some
PDCCH search space will be substituted by e-PDCCH search spaces in carrier wave, also having in some carrier waves can there are e-PDCCH at the same time to search
Rope space and PDCCH search space.Similarly, in the UE for initiating random access, part UE can support e-PDCCH and PDCCH, also
There is part UE only to support PDCCH.
To sum up, inventor has found that at least there are the following problems in the prior art：For the UE of compatible different abilities, network section
After point receives the PRACH message of UE transmissions, it is impossible to search space is selected according to the ability need of UE, and can only be in e-PDCCH
The e-PDCCH or PDCCH of scheduling accidental access response message are sent in search space and PDCCH search space, is caused public
The wasting of resources of search space, causes random access capacity relatively low.
The content of the invention
The embodiment of the present invention provides a kind of information transferring method, network node, user equipment and system, can save public affairs
Search space resource altogether, increases random access capacity.
To reach above-mentioned purpose, the embodiment of the present invention adopts the following technical scheme that：
A kind of information transferring method, including：
Receive the Physical Random Access Channel PRACH message that user equipment (UE) is sent；
PRACH configuration informations according to entrained by the PRACH message determine target search space, wherein the target is searched
Rope space is one at least two search spaces that network node provides, and each search space corresponds to one group of PRACH configuration
Information；
The downlink control message of scheduling accidental access response message is sent to the UE by the target search space.
A kind of information transferring method, including：
User equipment (UE) receives at least one set of Physical Random Access Channel PRACH configuration informations that network node issues, its
In one group of PRACH configuration information correspond to a search space；
According to the corresponding PRACH configuration informations in target search space PRACH message, wherein institute are sent to the network node
It is one at least two described search spaces that network node provides to state target search space；
The downlink for the scheduling accidental access response message that the network node is sent is received by the target search space
Control message.
A kind of network node, including：
Receiving unit, for receiving the Physical Random Access Channel PRACH message of user equipment (UE) transmission；
Determination unit, it is true for the PRACH configuration informations entrained by the PRACH message that is received according to the receiving unit
Set the goal search space, wherein the target search space is one at least two search spaces that network node provides,
Each search space corresponds to one group of PRACH configuration information；
Transmitting element, the target search space for being determined by the determination unit send scheduling to the UE and connect at random
Enter the downlink control message of response message.
A kind of user equipment (UE), including：
First receiving unit, at least one set of Physical Random Access Channel PRACH configurations issued for receiving network node
Information, one of which PRACH configuration informations correspond to a search space；
Transmitting element, for being sent according to the corresponding PRACH configuration informations in target search space to the network node
PRACH message, wherein the target search space is one at least two described search spaces that network node provides；
Second receiving unit, the scheduling for receiving the network node transmission by the target search space connect at random
Enter the downlink control message of response message.
A kind of information transmission system, including：Network node and UE；
The network node, for configuring the corresponding PRACH configuration informations in each search space and being sent to UE；Receive and use
The Physical Random Access Channel PRACH message that family equipment UE is sent；PRACH according to entrained by the PRACH message matches somebody with somebody confidence
Breath determines target search space, wherein the target search space is one at least two search spaces that network node provides
A, each search space corresponds to one group of PRACH configuration information；Scheduling is sent at random to the UE by the target search space
Access the downlink control message of response message；
The UE, at least one set of Physical Random Access Channel PRACH configuration informations issued for receiving network node, its
In one group of PRACH configuration information correspond to a search space；According to the corresponding PRACH configuration informations in target search space to described
Network node sends PRACH message；The scheduling random access of the network node transmission is received by the target search space
The downlink control message of response message.
Information transferring method, network node, user equipment and system provided in an embodiment of the present invention, UE are initiating to connect at random
Fashionable to carry the corresponding PRACH configuration informations in target search space in PRACH message, network node selection is suitable
Search space issues downlink control message to UE, and scheduling is sent in each public search space with network node in the prior art
The downlink control message of accidental access response message is compared, and can select suitable public search space according to the ability need of UE
Downlink control message is sent for UE, without taking the resource block of other public search spaces, reaches and saves public search space money
The purpose in source, the resource of saving can be used for providing random access for other UE, so as to increase random access capacity.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of information transferring method flow chart in the embodiment of the present invention 1；
Fig. 2 is another information transferring method flow chart in the embodiment of the present invention 1；
Fig. 3 is a kind of information transferring method flow chart in the embodiment of the present invention 2；
Fig. 4 is a kind of network node composition schematic diagram in the embodiment of the present invention 3；
Fig. 5 is another network node composition schematic diagram in the embodiment of the present invention 3；
Fig. 6 is a kind of UE composition schematic diagrams in the embodiment of the present invention 3；
Fig. 7 is another UE composition schematic diagrams in the embodiment of the present invention 3；
Fig. 8 is a kind of information transmission system composition schematic diagram in the embodiment of the present invention 3.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1
The embodiment of the present invention provides a kind of information transferring method, network node side is can be applied to, as shown in Figure 1, the party
Method includes：
101st, the Physical Random Access Channel PRACH message that user equipment (UE) is sent is received.
Wherein, the network node is the equipment that network side provides random access service for UE, such as wireless network control
Device（Radio Network Controller, RNC）, eNodeB etc..
102nd, the PRACH configuration informations according to entrained by the PRACH message determine target search space, wherein the mesh
Mark search space is one at least two search spaces that network node provides, and each search space corresponds to one group of PRACH
Configuration information.
Wherein, one group of PRACH configuration information is configured for each search space, UE can select one according to the ability of itself
Search space is as target search space.In this way, when initiating random access, UE matches somebody with somebody the corresponding PRACH in target search space
Confidence breath is carried in PRACH message., can be according to wherein carrying when network node receives the PRACH message
PRACH configuration informations determine target search space.Network node can provide at least two search spaces, and the target search is empty
Between be one in multiple search spaces that network node provides, in order not to use each search at least two search spaces
Space all sends identical downlink control message, and network node can be true according to the PRACH configuration informations entrained by PRACH message
Determine the target search space that UE has been selected.
In the present embodiment, the PRACH configuration informations can be configured in network node side in advance and is sent to UE, in advance
The PRACH configuration informations of configuration can identify different public search spaces, and each public search space is corresponding with one group
PRACH configuration informations.
103rd, the downlink control for sending scheduling accidental access response message to the UE by the target search space disappears
Breath.
Wherein, described search space can be：PDCCH search space, or e-PDCCH search spaces etc..The downlink control
Message processed is used to dispatch accidental access response message, for example, for PDCCH search space, the downlink control message is PDCCH
Message；For e-PDCCH search spaces, the downlink control message is e-PDCCH message.
It should be noted that refer to can be empty by common search that multiple UE are shared for search space described in this specification
Between, such as public search space of the public search space of e-PDCCH and PDCCH etc..Certainly, with the development of LTE system, go back
Other public search spaces can be introduced, it is also applicable in embodiments of the present invention.
The method for sending information that Fig. 1 is provided, UE carry the corresponding PRACH configuration informations in target search space in PRACH
In message, network node selects suitable search space to issue downlink control message to UE, exists with network node in the prior art
The downlink control message that each public search space sends scheduling accidental access response message is compared, can be according to the ability of UE
Demand selects suitable public search space to send downlink control message for UE, without the resource for taking other public search spaces
Block, achievees the purpose that to save public search space resource, and the resource of saving can be used for providing random access for other UE, so that
Increase random access capacity.
The embodiment of the present invention also provides a kind of information transferring method, can be applied to UE sides, as shown in Fig. 2, this method bag
Include：
201st, at least one set of Physical Random Access Channel PRACH that user equipment (UE) reception network node issues matches somebody with somebody confidence
Breath, wherein the target search space is one at least two search spaces that network node provides, each search space
Corresponding one group of PRACH configuration information.
Wherein, UE can receive the corresponding PRACH configuration informations in each search space that network node issues, alternatively, to the greatest extent
Managed network node issues the corresponding PRACH configuration informations in each search space by forms such as broadcast, but UE can be received only
UE one group of PRACH configuration information of concern.For example, if UE only supports PDCCH search space, only receive network node and issue
The corresponding PRACH configuration informations of PDCCH search space；If UE support PDCCH and e-PDCCH search spaces, more than reception
The corresponding two groups of PRACH configuration informations in two search spaces.
202nd, PRACH message is sent to the network node according to the corresponding PRACH configuration informations in target search space, its
Described in target search space be network node provide at least two described search spaces in one.
Wherein, after UE can receive at least two groups of PRACH configuration informations by step 201, first determine that target search is empty
Between retransmit PRACH message.Specifically, UE is randomly choosed from least two search spaces that UE is supported or according to predetermined excellent
The selected corresponding PRACH in target search space is matched somebody with somebody into confidence as target search space in first one search space of sequential selection
Breath is sent to network node by PRACH message.
Alternatively, after UE can receive at least two groups of PRACH configuration informations by step 201, first PRACH message is sent again
PRACH message according to having sent determines target search space.Specifically, UE is random from least two groups of PRACH configuration informations
Selection selects one group of PRACH configuration information to be sent to network node by PRACH message according to predetermined priority, then
PRACH configuration informations according to having sent determine its corresponding target search space, and network is received by the target search space
The downlink control message that node issues.
Alternatively, UE only supports a search space, which is the target search space given tacit consent to,
Unique one group of PRACH configuration information that network node issues can be received by step 201, then can directly basis be received
PRACH configuration informations send PRACH message, then receiving the downlink that issues of network node by the target search space controls
Message.
203rd, the scheduling accidental access response message of the network node transmission is received by the target search space
Downlink control message.
Wherein, network node, can be according to the PRACH after the PRACH message that UE is sent by step 202 is received
PRACH configuration informations entrained by message determine the target search space, and issue downlink to UE by target search space
Control message.UE also determines target search space while sending PRACH message by step 202, therefore can be only in mesh
Mark detects downlink control message in search space.
The information transferring method that Fig. 2 is provided, UE can be by the corresponding PRACH in target search space when initiating random access
Configuration information is carried in PRACH message so that and network node issues downlink control message by target search space to UE, with
UE needs the method while listening for multiple search spaces to compare in the prior art, and UE selected targets search space is simultaneously searched by target
Rope space receives downlink control message, without while listening for multiple search spaces, achieving the purpose that to save UE process resources.
Embodiment 2
The embodiment of the present invention provides a kind of information transferring method, as shown in figure 3, including：
301st, network node configures the corresponding PRACH configuration informations in each search space and is sent to UE.
Wherein, the PRACH configuration informations are specially following at least one：It is PRACH configuration indexes, frequency shift (FS), leading
Sequence information, resource allocation information, modulation coding information.
302nd, at least one set of Physical Random Access Channel PRACH that user equipment (UE) reception network node issues matches somebody with somebody confidence
Breath, one of which PRACH configuration informations correspond to a search space.
Wherein, one group of PRACH configuration information is configured for each search space in advance on the network node, be not only stored in
On network node, UE is also handed down to.Certainly, network node is not aware that what the search space that each UE is supported is, because
This can by each search space for PRACH configuration informations be sent to UE.The PRACH configuration informations can by with
Under any form be sent to UE：Broadcast channel, system message, radio resource control RRC signaling, reference signal.For example,
PRACH configuration informations can be carried explicitly in broadcast channel message.Alternatively, PRACH configuration informations can also be implicit shape
Formula, such as each search space correspond to a kind of channel status reference signal, can be true by parsing channel status reference signal
Fixed corresponding search space.
303rd, the corresponding PRACH configuration informations in UE target searches space send PRACH message to the network node, wherein
The target search space is one at least two described search spaces that network node provides.It is corresponding, network node
Receive the Physical Random Access Channel PRACH message that user equipment (UE) is sent.
Specifically, the form of PRACH configuration informations and the method according to PRACH configuration informations transmission PRACH message illustrate
It is as follows：
One configuration index can correspond to a kind of targeting sequencing form of PRACH and a set of time domain PRACH resources.Wherein,
The time span of PRACH message, circulating prefix-length etc. are configured by targeting sequencing form, before a search space corresponds to one kind
Lead Format Series Lines.Time domain PRACH resources can configure UE and send PRACH in the different subframes of different radio frame, corresponding to be
Different search spaces.
Frequency shift (FS) corresponds to PRACH frequency domain resources position, the different search space of different frequency domain resource position correspondences.Example
Such as, system bandwidth is 100 resource blocks, and the frequency resource of the PRACH message of a certain search space of network node configuration is
Certain 6 continuous resource block in system bandwidth.
Targeting sequencing information is used to be sent to UE after network node specifies targeting sequencing for each search space, and UE is being sent out
When playing random access, the corresponding targeting sequencing in target search space is carried in PRACH message.
Resource allocation information and modulation coding information can be used for the situation that the PRACH message is upstream data bag.I.e.
When UE is using initiation random access in the form of upstream data bag, the resource block shared by the upstream data bag, or coding are set
Type.The resource block of occupancy is different or type of coding is different, can represent different search spaces.
304th, PRACH configuration information of the network node according to entrained by the PRACH message determines target search space.
Specifically, can by the PRACH configuration informations entrained by the PRACH message with it is configured on the network node
The corresponding PRACH configuration informations in each search space matched.The search search space of successful match is determined as target
Search space.
It should be noted that target search space refers to that UE can support the search space, can be in the search space
Detect the Downlink Control Information that network node is sent.If UE only supports PDCCH search space, PDCCH search space is exactly target
Search space.Alternatively, if UE supports PDCCH search space and e-PDCCH search spaces at the same time, the above two can received
After the corresponding PRACH configuration informations in a search space, one is selected from two search spaces as target search space, foundation
The corresponding PRACH configuration informations in target search space of selection send PRACH message.
305th, network node is sent under scheduling accidental access response message by the target search space to the UE
Row control message.Correspondingly, the scheduling random access that UE receives the network node transmission by the target search space is rung
Answer the downlink control message of message.
Wherein, network node can determine target search space, and only sending downlink control to UE by the search space disappears
Breath, i.e., send the e-PDCCH or PDCCH of scheduling accidental access response message to UE.Since network node only needs to be searched with one
To the UE downlink control message occurs for rope space, the running time-frequency resource of other search spaces of occupancy that will not be unnecessary, at the same time just
Downlink control message can be sent to other UE by other search spaces, so as to improve the efficiency of random access, increase
Random access capacity.
In addition, interim scrambler of the network node for UE distribution and some other timings are included in accidental access response message
Configuration information.UE obtains accidental access response message according to the downlink control message of the scheduling accidental access response message.Institute
Interim scrambler is stated to be used to allow UE to reply a uplink service number for including UE identification informations to network node according to the interim scrambler
According to bag.
306th, UE sends a uplink business data bag to the network node, is carried in the uplink business data bag
Interim scrambler and the UE identification information received.
Wherein, network node is parsed from the uplink business data bag of reception obtains the corresponding interim scramblers of the UE and UE
Identification information.The interim scrambler is to be handed down to UE by network node in step 305, therefore network node can be interim according to this
Scrambler determines that the UE is the UE for initiating random access, obtains the UE identification informations so that subsequent communications use, so far connects at random
Enter success.
307th, random access success.
After random access success, network node can be scrambled by the target search space to the interim scrambler of hair under UE
Downlink control message to UE, establish radio resource control link, carry out subsequent communications.
In another application scenarios of the embodiment of the present invention, the PRACH message can be a upstream data bag.When
When UE or network node initiate random access, UE can save the operation that whereabouts network node sends random access leader sequence, directly
Connect to network node and send a upstream data bag, PRACH configuration informations are carried in the upstream data bag.In this way, network section
Point can be parsed from upstream data bag obtains PRACH configuration informations, determines target search space, and pass through target search space
Issue downlink control message.
It should be noted that the specific descriptions of part steps may be referred in corresponding in embodiment 1 in the embodiment of the present invention
Hold, the embodiment of the present invention will be repeated no longer one by one here.
Information transferring method provided in an embodiment of the present invention, UE can be by target search spaces pair when initiating random access
The PRACH configuration informations answered are carried in PRACH message, and network node selects suitable search space to issue downlink control to UE
Message, the downlink control of scheduling accidental access response message is sent with network node in the prior art in each public search space
Message processed is compared, and according to the ability need of UE suitable public search space can be selected to send downlink control message for UE, no
With the resource block for taking other public search spaces, achieve the purpose that to save public search space resource, the resource of saving can be with
For providing random access for other UE, so as to increase random access capacity.
And it is possible to determine the search space described in UE by the UE upstream data bags sent, random access step is simplified
Suddenly, the random access of UE can be completed by a upstream data bag, improves the efficiency of random access.
Embodiment 3
The embodiment of the present invention provides a kind of network node, as shown in figure 4, including：Receiving unit 41, determination unit 42, hair
Send unit 43.
Receiving unit 41, for receiving the Physical Random Access Channel PRACH message of user equipment (UE) transmission.
Determination unit 42, matches somebody with somebody confidence for the PRACH entrained by the PRACH message that is received according to the receiving unit 41
Breath determines target search space.
Wherein, the target search space is one at least two search spaces that network node provides, and is each searched
Rope space corresponds to one group of PRACH configuration information.The PRACH configuration informations are specially following at least one：PRACH configures rope
Draw, frequency shift (FS), targeting sequencing information, resource allocation information, modulation coding information.
Transmitting element 43, for by the determination unit 42 determine target search space to the UE send scheduling with
Machine accesses the downlink control message of response message.
Further, as shown in figure 5, the network node can also include：Dispensing unit 44.
Dispensing unit 44, for before the PRACH message that the receiving unit 41 receives that the UE is sent, configuration to be each
The corresponding PRACH configuration informations in search space are simultaneously sent to UE.
Wherein, the PRACH configuration informations are sent to UE by following any form：Broadcast channel, system message, nothing
Line resources control RRC signaling, reference signal.
Further, the determination unit specifically can be used for：PRACH entrained by the PRACH message is matched somebody with somebody into confidence
Breath PRACH configuration informations corresponding with each search space configured on the network node are matched；By successful match
Search search space be determined as target search space.
Wherein, described search space can be：Physical downlink control channel PDCCH search space, or enhancing physical down
Control channel e-PDCCH search spaces, or other public search spaces.Correspondingly, the scheduling accidental access response message
Downlink control message is：PDCCH message, or e-PDCCH message, or the corresponding downlink control message of other public search spaces.
In another application scenarios of the present invention, the PRACH message can be not only PRACH targeting sequencings, may be used also
To be a upstream data bag.The operation that UE sends PRACH targeting sequencings to network node is saved, is directly sent to network node
One upstream data bag, the information such as the PRACH configuration informations of UE are carried by the upstream data bag.
The embodiment of the present invention provides a kind of UE, as shown in fig. 6, including：First receiving unit 51, transmitting element 52, second
Receiving unit 53.
First receiving unit 51, matches somebody with somebody for receiving at least one set of Physical Random Access Channel PRACH that network node issues
Confidence ceases, and one of which PRACH configuration informations correspond to a search space.
Transmitting element 52, for being sent according to the corresponding PRACH configuration informations in target search space to the network node
PRACH message, wherein the target search space is one at least two described search spaces that network node provides.
Second receiving unit 53, for matching somebody with somebody confidence according to the corresponding PRACH in target search space in the transmitting element 52
Cease after sending PRACH message to the network node, receive what the network node was sent by the target search space
Dispatch the downlink control message of accidental access response message.
Further, in a kind of application scenarios of the embodiment of the present invention, the transmitting element 52 can include：First choosing
Select module 521, the first sending module 522.
First choice module 521, for the random selection from least two search spaces that UE is supported or according to predetermined
Priority selects a search space as target search space.
First sending module 522, the target search space for the first choice module 521 to be selected are corresponding
PRACH configuration informations are sent to the network node by PRACH message.
As shown in fig. 7, in another application scenarios of the embodiment of the present invention, the transmitting element 52 can include：The
Two sending modules 523, the second selecting module 524.
Second sending module 523, for the random selection from least one set of PRACH configuration informations received or according to pre-
Fixed priority selects one group of PRACH configuration information to be sent to the network node by PRACH message.
Second selecting module 524, the PRACH configuration informations for having been sent according to second sending module 523 determine
Corresponding target search space.
The embodiment of the present invention also provides a kind of information transmission system, as shown in figure 8, including：Network node 61 and user
Equipment UE 62.
The network node 61, for configuring the corresponding PRACH configuration informations in each search space and being sent to UE；Receive
The Physical Random Access Channel PRACH message that user equipment (UE) 62 is sent；PRACH according to entrained by the PRACH message matches somebody with somebody
Confidence breath determines target search space, wherein the target search space is at least two search spaces that network node provides
One, each search space corresponds to one group of PRACH configuration information；Sent and adjusted to the UE62 by the target search space
Spend the downlink control message of accidental access response message.
The UE62, the Physical Random Access Channel PRACH configuration informations issued for receiving network node 61, wherein one
Group PRACH configuration informations correspond to a search space；According to the corresponding PRACH configuration informations in target search space to the network
Node 61 sends PRACH message, wherein the target search space is at least two described search spaces that network node provides
In one；Received by the target search space under the scheduling accidental access response message that the network node 61 is sent
Row control message.
It should be noted that the specific descriptions of part function module may be referred to embodiment 1 and reality in the embodiment of the present invention
Corresponding content in example 2 is applied, the embodiment of the present invention will be repeated no longer one by one here.
Network node, UE and the information transmission system provided in an embodiment of the present invention, UE can be incited somebody to action when initiating random access
The corresponding PRACH configuration informations in target search space are carried in PRACH message, and network node selects suitable search space pair
UE issues downlink control message, and sending scheduling random access in each public search space with network node in the prior art rings
Answer the downlink control message of message to compare, suitable public search space can be selected according to the ability need of UE as under UE transmissions
Row control message, without taking the resource block of other public search spaces, achievees the purpose that to save public search space resource, section
The resource of province can be used for providing random access for other UE, so as to increase random access capacity.
And it is possible to determine the search space described in UE by the UE upstream data bags sent, random access step is simplified
Suddenly, the random access of UE can be completed by a upstream data bag, improves the efficiency of random access.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow
Software is helped to add the mode of required common hardware to realize, naturally it is also possible to which by hardware, but the former is more preferably in many cases
Embodiment.Based on such understanding, portion that technical scheme substantially in other words contributes the prior art
Dividing can be embodied in the form of software product, which is stored in the storage medium that can be read, and such as be counted
The floppy disk of calculation machine, hard disk or CD etc., including some instructions are used so that a computer equipment（Can be personal computer,
Server, or network equipment etc.）Perform the method described in each embodiment of the present invention.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (17)
- A kind of 1. information transferring method, it is characterised in that including：Receive the Physical Random Access Channel PRACH message that user equipment (UE) is sent；Wherein, at least wrapped in the PRACH message The corresponding PRACH configuration informations in target search space are included, the target search space is supported at least by the UE from the UE Randomly choosed in two search spaces or select a search space as target search space according to predetermined priority；Or Person, randomly choosed including at least the UE from least one set of PRACH configuration informations received in the PRACH message or by One group of PRACH configuration information is selected according to predetermined priority；PRACH configuration informations according to entrained by the PRACH message determine target search space, wherein the target search is empty Between be one at least two search spaces that network node provides, each search space corresponds to one group of PRACH configuration information；The downlink control message of scheduling accidental access response message is sent to the UE by the target search space.
- 2. information transferring method according to claim 1, it is characterised in that receiving the PRACH message of the UE transmissions Before, further include：Network node configures the corresponding PRACH configuration informations in each search space and is sent to UE.
- 3. information transferring method according to claim 2, it is characterised in thatDescribed search space is：Physical downlink control channel PDCCH search space, or enhancing Physical Downlink Control Channel e- PDCCH search space；Correspondingly, the downlink control message of the scheduling accidental access response message is：PDCCH message, or e-PDCCH message.
- 4. information transferring method according to claim 1, it is characterised in that described according to entrained by the PRACH message PRACH configuration informations determine target search space, including：By each search space configured on the PRACH configuration informations entrained by the PRACH message and the network node Corresponding PRACH configuration informations are matched；The search space of successful match is determined as target search space.
- 5. information transferring method according to claim 1, it is characterised in that the PRACH message is：The leading sequences of PRACH Row, and/or upstream data bag.
- 6. information transferring method according to claim 1, it is characterised in that the PRACH configuration informations pass through following A kind of form is sent to UE：Broadcast channel, system message, radio resource control RRC signaling, reference signal.
- 7. information transferring method according to claim 1, it is characterised in that the PRACH configuration informations are specially following It is at least one：PRACH configuration indexes, frequency shift (FS), targeting sequencing information, resource allocation information, modulation coding information.
- A kind of 8. information transferring method, it is characterised in that including：User equipment (UE) receives at least one set of Physical Random Access Channel PRACH configuration informations that network node issues, wherein one Group PRACH configuration informations correspond to a search space；PRACH message is sent to the network node according to the corresponding PRACH configuration informations in target search space, wherein the mesh Mark search space is one at least two described search spaces that network node provides；The foundation target search space pair The PRACH configuration informations answered send PRACH message to the network node, including：From at least two search spaces that UE is supported Middle random selection selects a search space as target search space according to predetermined priority；By the target search The corresponding PRACH configuration informations in space are sent to the network node by PRACH message；It is alternatively, described according to target search The corresponding PRACH configuration informations in space send PRACH message to the network node, including：From at least one set received Randomly choosed in PRACH configuration informations or select one group of PRACH configuration information to pass through PRACH message according to predetermined priority It is sent to the network node；PRACH configuration informations according to having sent determine corresponding target search space；The downlink that the scheduling accidental access response message that the network node is sent is received by the target search space controls Message.
- 9. information transferring method according to claim 8, it is characterised in thatDescribed search space is：Physical downlink control channel PDCCH search space, or enhancing Physical Downlink Control Channel e- PDCCH search space；Correspondingly, the downlink control message of the scheduling accidental access response message is：PDCCH message, or e-PDCCH message.
- 10. information transferring method according to claim 9, it is characterised in that the PRACH message is：The leading sequences of PRACH Row, and/or upstream data bag.
- 11. information transferring method according to claim 10, it is characterised in that UE obtains institute by following any form State PRACH configuration informations：Broadcast channel, system message, radio resource control RRC signaling, reference signal.
- 12. information transferring method according to claim 11, it is characterised in that the PRACH configuration informations be specially with Lower at least one：PRACH configuration indexes, frequency shift (FS), targeting sequencing information, resource allocation information, modulation coding information.
- A kind of 13. network node, it is characterised in that including：Receiving unit, for receiving the Physical Random Access Channel PRACH message of user equipment (UE) transmission；Wherein, the PRACH Include at least the corresponding PRACH configuration informations in target search space in message, the target search space is by the UE from described Randomly choosed at least two search spaces that UE is supported or select a search space as mesh according to predetermined priority Mark search space；Alternatively, the UE is included at least in the PRACH message from least one set of PRACH configuration informations received Middle random selection selects one group of PRACH configuration information according to predetermined priority；Determination unit, mesh is determined for the PRACH configuration informations entrained by the PRACH message that is received according to the receiving unit Search space is marked, wherein the target search space is one at least two search spaces that network node provides, each Search space corresponds to one group of PRACH configuration information；Transmitting element, connects at random for sending scheduling to the UE by the target search space that the determination unit determines Enter the downlink control message of response message.
- 14. network node according to claim 13, it is characterised in that further include：Dispensing unit, for before the PRACH message that the receiving unit receives that the UE is sent, configuring each search space Corresponding PRACH configuration informations are simultaneously sent to UE.
- 15. the network node according to claim 13 or 14, it is characterised in that the determination unit is specifically used for：By institute The PRACH configuration informations stated entrained by PRACH message are corresponding with each search space configured on the network node PRACH configuration informations are matched；The search search space of successful match is determined as target search space.
- A kind of 16. user equipment (UE), it is characterised in that including：First receiving unit, at least one set of Physical Random Access Channel PRACH configuration informations issued for receiving network node, One of which PRACH configuration informations correspond to a search space；Transmitting element, disappears for sending PRACH to the network node according to the corresponding PRACH configuration informations in target search space Breath, wherein the target search space is one at least two described search spaces that network node provides；Second receiving unit, in the transmitting element according to the corresponding PRACH configuration informations in target search space to described After network node sends PRACH message, the scheduling that the network node transmission is received by the target search space is random Access the downlink control message of response message；The transmitting element includes：First choice module, for the random selection from least two search spaces that UE is supported or according to predetermined priority A search space is selected as target search space；First sending module, for the corresponding PRACH configuration informations in target search space for selecting the first choice module The network node is sent to by PRACH message；Alternatively, the transmitting element includes：Second sending module, for the random selection from least one set of PRACH configuration informations received or according to predetermined excellent First one group of PRACH configuration information of sequential selection is sent to the network node by PRACH message；Second selecting module, the PRACH configuration informations for having been sent according to second sending module determine corresponding target Search space.
- A kind of 17. information transmission system, it is characterised in that including：Such as the network node any one of claim 13-15；AndUser equipment (UE) as claimed in claim 16.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2012/077570 WO2014000165A1 (en) | 2012-06-26 | 2012-06-26 | Information transmission method, network node, user equipment and system |
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| CN109286983B (en) * | 2017-07-21 | 2023-08-08 | 普天信息技术有限公司 | Method and device for determining search space |
| WO2019061354A1 (en) | 2017-09-29 | 2019-04-04 | Oppo广东移动通信有限公司 | Method and device for radio communication |
| EP4274345A3 (en) * | 2018-05-15 | 2024-01-03 | Ntt Docomo, Inc. | User device, base station apparatus and method performed by a user device |
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| CN102056185B (en) * | 2009-10-31 | 2014-12-10 | 华为技术有限公司 | Channel blind detection method, channel assignment method and device |
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| CN102271418B (en) * | 2011-07-28 | 2016-04-20 | 电信科学技术研究院 | A kind of method of Stochastic accessing and device |
| CN102291736B (en) * | 2011-08-08 | 2017-11-24 | 中兴通讯股份有限公司 | Detection method, user equipment and the base station of down control channel |
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| CN101953181A (en) * | 2007-12-17 | 2011-01-19 | 三菱电机株式会社 | Mobile communication system |
| CN101651885A (en) * | 2008-08-14 | 2010-02-17 | 展讯通信（上海）有限公司 | Method for enhancing performance of control channels in communication systems |
| CN102014514A (en) * | 2009-11-10 | 2011-04-13 | 大唐移动通信设备有限公司 | Method and equipment for obtaining duplex system information of user equipment |
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