CN108307476A - Method and apparatus in Radio Access Network for the initial access of terminal device - Google Patents
Method and apparatus in Radio Access Network for the initial access of terminal device Download PDFInfo
- Publication number
- CN108307476A CN108307476A CN201710026188.0A CN201710026188A CN108307476A CN 108307476 A CN108307476 A CN 108307476A CN 201710026188 A CN201710026188 A CN 201710026188A CN 108307476 A CN108307476 A CN 108307476A
- Authority
- CN
- China
- Prior art keywords
- signal
- transmission
- transfer point
- point
- cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present disclosure proposes the methods and apparatus for the initial access that terminal device is used in Radio Access Network (RAN).In the disclosure, it is proposed that find the double-layer structure of signal transmission.First discovery signal includes synchronizing signal and necessary system information, is transmitted periodically with the period 1.Second discovery signal includes the beam reference signal specific to transfer point or the synchronizing signal specific to transfer point and necessary system information, is transmitted periodically with second round.First finds that signal designation second finds the resource allocation information of signal.
Description
Technical field
Embodiment of the disclosure is related to Radio Access Network, and relates more specifically to use in Radio Access Network (RAN)
In the method, equipment and computer program product of the initial access of terminal device.
Background technology
More stringent requirements are proposed for the swift and violent capacity increased for communication system of mobile data, and wireless network densification
As meeting the important way of mobile data demand.It is moved about the 5th generation 5G in third generation partner program 3GPP RAN2
Communication system it is new eat dishes without rice or wine (NR) discussion in, include that one or more transfer points have reached one for a cell
It causes.Have the advantages that the design of multiple transmission point cell can provide mobile management, coordinating transmissions, interference control aspect.
In the operation of 5G mobile communication system, since used carrier wave includes such as 6GHz low frequency carrier signals below and such as 6-
Therefore the high frequency carrier of 100GHz needs to consider in the technical solution of design terminal equipment initial access network a kind of general
Frame supports above-mentioned diversity requirement.
Invention content
Embodiment of the disclosure provides the method, apparatus of the initial access for terminal device in Radio Access Network RAN
And computer program product.
According to the disclosure in a first aspect, being connect for the initial of terminal device in providing a kind of Radio Access Network RAN
The method entered.There is multiple transmission point in cell in the ran.At the first transmission point of multiple transmission point, with multiple transmission
The second transmission point of point synchronously finds signal with period 1 transmission associated with the cell in RAN first.It is passed first
At defeated point, signal is found with second round transmission associated with first transmission point second.First finds that signal designation second is sent out
The resource allocation information of existing signal.
According to the second aspect of the disclosure, the transfer point in a kind of Radio Access Network (RAN) is provided, it is small in RAN
There is the transfer point and at least one other transfer point in area.The transfer point includes controller and the memory including instruction.When
When instruction is executed by a controller so that the transfer point executes action.Performed action includes：At the transfer point, and at least
One other transfer point synchronously finds signal with period 1 transmission associated with the cell in RAN first；And at this
At transfer point, signal is found with second round transmission associated with the transfer point second, first finds that signal designation second is sent out
The resource allocation information of existing signal.
According to the third aspect of the disclosure, a kind of program product is provided, being tangibly stored in non-transient computer can
It reads on medium and includes machine-executable instruction, instruction makes computer execute the above method when being computer-executed.
It should be appreciated that the content described in Summary is not intended to limit the key or again of the embodiment of the present disclosure
Feature is wanted, it is also non-for limiting the scope of the present disclosure.The other feature of the disclosure will be easy to understand by description below.
Description of the drawings
Disclosure exemplary embodiment is described in more detail in conjunction with the accompanying drawings, the disclosure it is above-mentioned and other
Purpose, feature and advantage will be apparent.In the accompanying drawings, identical reference label typically represents same parts.
Fig. 1 shows the schematic diagram of Radio Access Network according to an embodiment of the present disclosure；
Fig. 2A shows the flow chart of method according to an embodiment of the present disclosure；
Fig. 2 B show the flow chart of method according to another embodiment of the present disclosure；
Fig. 3 shows the structure chart according to an embodiment of the present disclosure for finding signal；
Fig. 4 shows the structure chart of discovery signal according to another embodiment of the present disclosure；
Fig. 5 shows the structure chart of the discovery signal according to the another embodiment of the disclosure；
Fig. 6 shows the structure diagram of device according to an embodiment of the present disclosure；And
Fig. 7 shows the block diagram of the equipment of some embodiments according to the disclosure.
Specific implementation mode
Several exemplary embodiments shown in below with reference to the accompanying drawings describe the principle and spirit of the disclosure.It should
Understand, describes these specific embodiments merely to enabling those skilled in the art to more fully understand and realizing this public affairs
It opens, and not limits the scope of the present disclosure in any way.
Terminology used in this article " base station " refers to traditional base station, such as node B (NodeB or NB), basic is received
Send out device station (BTS), base station (BS) or base station sub-system (BSS) etc..Terminology used in this article " transfer point " refers to having
The low-power transmission node etc. of radio-frequency receiving-transmitting function and optional part Base-Band Processing function.
Term " terminal device " is any terminal device TE referred to base station communication.Terminal device can be that user sets
Standby UE, can also be any terminal with wireless communication function, including but not limited to, mobile phone, computer, individual digital help
Reason, game machine, wearable device and sensor etc..Term TE can be whole with movement station, subscriber station, mobile terminal, user
End, user equipment, terminal device, wireless device etc. are used interchangeably.
Herein, convenient to discuss, using eNB as the example of base station, it is also referred to as the network equipment herein, and
The one or more transfer points that will be distributed in the cell corresponding to eNB are referred to as transmission node, which receives with radio frequency
Send out function and optional part Base-Band Processing function.In other words, term " eNB " and " network equipment ", " base station " are in the disclosure
It may be used interchangeably in context, term " transfer point ", " transmission node ", " TP ", " TRP " may be used interchangeably, and term is " eventually
End equipment " and " user equipment " (UE) may be used interchangeably.It is understood that this is only exemplary, it is not intended to any
Mode limits the scope of application of the disclosure.
As it was noted above, the increase of mobile data is for the capacity of communication system, more stringent requirements are proposed, and wireless network
Network densification becomes the important way for meeting mobile data demand.In third generation partner program 3GPP RAN2 about the 5th
For 5G mobile communication system it is new eat dishes without rice or wine (NR) discussion in, include that one or more transfer points reach for a cell
At consistent.Design with multiple transmission point cell can provide mobile management, coordinating transmissions, interfere the excellent of control aspect
Point.In the operation of 5G mobile communication system, due to used carrier wave including such as 6GHz low frequency carrier signals below and such as
Therefore the high frequency carrier of 6-100GHz needs to consider in the technical solution of design terminal equipment initial access network a kind of logical
Above-mentioned diversity requirement is supported with frame.Be initially accessed frame design in, find signal be designed to need solve
A major issue certainly.
In the disclosure, it is proposed that find the two-tier system of signal transmission.First discovery signal includes synchronizing signal and must
System information is wanted, is transmitted periodically with the period 1.Second discovery signal includes the beam reference letter specific to transfer point
Number or the synchronizing signal specific to transfer point and necessary system information, be transmitted periodically with second round.First finds letter
Number instruction second find signal resource allocation information.In order to realize that reliable covering, first layer find signal by the institute in cell
Have or fractional transmission point synchronously uses the transimission power or wider improved in a manner of single frequency network in identical running time-frequency resource
Beam angle is transmitted.In order to overcome the big path loss and blocking under high frequency situations, second level discovery signal is by correlation
Transfer point transmitted using the beam scanning with the relatively narrow beam angle of lower power.
Fig. 1 shows the schematic diagram for the Radio Access Network RAN 100 that the embodiment of the present disclosure may be implemented wherein.Scheming
In 1, the covering of the network equipment 102 in RAN 100 forms cell 108.The network equipment 102 can be received with or without wireless
Function is sent out, radio transmission-receiving function is all completed by transfer point 104 in the latter cases.Network with radio transmission-receiving function is set
Standby 102 non-limiting example is eNB.Without radio transmission-receiving function in the case of, the network equipment 102 can be made
Centered on process points handle 104 relevant data of transfer point.Densely be deployed in cell 108 first transmission point 104-1,
The multiple transmission points such as second transmission point 104-2 (are referred to as " transfer point 104 ").
The network equipment 102 and transfer point 104 can be that the multiple terminal devices 106 in cell 108 provide service.In network
In the case that equipment 102 has radio transmission-receiving function, the network equipment 102 is that all terminal devices 106 provide signal and control
The covering of channel, and transfer point 104 provides data channel for particular terminal device 106.Do not have wireless receive in the network equipment 102
It is covering and the data that particular terminal device 106 provides signal and control channel by transfer point 104 in the case of sending out function
Channel.It should be appreciated that the channel type that the network equipment 102 described here and transfer point 104 are provided only is exemplary rather than
It is restrictive.In certain embodiments, terminal device 106 can be connected to the network equipment 102 and transfer point 104-1 simultaneously.Net
Between network equipment 102 and transfer point 104 and wired or wireless communication connection may be implemented each other in transfer point 104.
In order to realize initial access of the terminal device 106 for wireless network RAN 100, it is desirable to provide find signal.Hair
Existing signal can be provided by transfer point 104.All or part of transfer point in transfer point 104 can be transmitted related to cell 108
The discovery signal of connection is so that terminal device 106 may be coupled to cell 108.Transfer point 104-1 also send specific to itself
It was found that signal, so that making base station know terminal device by feedback of the terminal device based on the specific discovery signal of transfer point
106 are covered near transfer point 104-1 and by which wave beam of 104-1, to subsequently be passed for the data of the terminal device
It is defeated to be completed by selected wave beam by the transfer point.
Fig. 2A is shown according to the embodiment of present disclosure for being set for terminal in Radio Access Network RAN 100
The flow chart of the method 200A of standby 106 initial access.In certain embodiments, method 200A can be by multiple transmission point
Any one is executed.For convenience of description, it will be retouched using first transmission point 104-1 as the executive agent of method 200A
It states.It should be understood that method 200A can also include unshowned additional step and/or can be omitted shown step.
The range of subject matter described herein is not limited in this respect.
202, at first transmission point 104-1, the second transmission point 104-2 with multiple transmission point 104 is synchronously with
One period 310 transmission associated with the cell 108 in RAN 100 first finds signal.
As described above, in embodiment of the disclosure, all or part of transfer point in transfer point 104 can transmit with it is small
108 associated discovery signal of area is so that terminal device 106 may be coupled to cell 108.That is, first transmission point 104-1
The first discovery signal can be transmitted together with a number of other transfer points 104.In certain embodiments, it first finds occupied by signal
Running time-frequency resource can be predefined by system.Signal is found by sending first by transfer point 104-1 and other transfer points 104,
The reliable covering in cell 108 may be implemented.
204, signal is found with the transmission of second round 312 associated with first transmission point 104-1 second.Particularly,
In accordance with an embodiment of the present disclosure, the resource allocation information of the second discovery signal is specified in the first discovery signal.By by
One finds that signal designation second finds the occupied running time-frequency resource of signal, can improve the flexibility of system.Specifically, in difference
Transfer point 104 used in the case of radio frequency realization method difference, need that different resource distributions is arranged for transfer point 104
Mode.Terminal device 106 receives the first discovery signal can get the resources employment methods of the second discovery signal later, to
More easily receive the second discovery signal.
Other than realizing the necessary system information of synchronous and acquisition, the second discovery signal can be utilized to support transfer point
Beam scanning, wave beam between 104-1 and the terminal device 106 in its coverage area are aligned or wave beam tracking.Below in conjunction with
The example implementation of Fig. 3 and Fig. 4 pairs first discovery signal and the second discovery signal is described in detail.
In certain embodiments, first find signal carry 108 specific information of cell, include at least cell ID,
The resource allocation information of part system message and the second discovery signal, and second finds that signal carries first transmission point 104-1
Specific information, the identification information including at least first transmission point 104-1 and the wave beam letter used in first transmission point 104-1
Breath.
In certain embodiments, the period 1 310 is relatively large, and is selectively the integral multiple of second round 312.
For example, the period 1 310 can be 100ms, and second round 312 is 10ms.Optionally, in some embodiments, the second hair
The transmission time of existing signal can be evenly distributed in the period 1 310.It is arranged second round 312 shorter to be conducive to end
End equipment 106 determines available optimum beam in time.For example, in the case that utilizing millimeter wave frequency band, path loss and blocking are for letter
Number transmission have a huge impact.Especially in the moving process of terminal device 106, terminal device 106 is available best
Transmission beam is also changing, and the transmission cycle of the second shorter discovery signal can make transfer point 104 and terminal device 106
Between used wave beam adjustment it is more timely.
In certain embodiments, in order to realize reliable covering, first layer discovery signal is by all or part of in cell 108
Transfer point 104 is synchronously wide using the transimission power or wider wave beam improved in identical running time-frequency resource in a manner of single frequency network
Degree is transmitted.In order to overcome the big path loss and blocking under high frequency situations, second level discovery signal is by relevant transmission
Point 104-1 is transmitted using the beam scanning with the relatively narrow beam angle of lower power.
Fig. 2 B are shown according to the embodiment of present disclosure for being set for terminal in Radio Access Network RAN 100
The flow chart of the method 200B of standby 106 initial access.Method 200B can be considered as a kind of example implementation of method 200A,
Step 206-210 is increased on the basis of method 200A.
Usually, in method 200B, the both of which of the second discovery signal is devised：Activity pattern and non-live dynamic model
Formula.In an active mode, the synchronizing signal (SS) 302 in signal and first layer discovery are found specific to the first layer of cell 108
It necessary system message (ESI) 304 in signal and is all periodically passed specific to the second discovery signal of transfer point 104-1
It is defeated.Under an inactive mode, only found in SS 302 and first layer discovery signal in signal specific to the first layer of cell 108
ESI 304 be transmitted periodically, while second find signal stop transmission.Depending on specific condition, both moulds
It can switch mutually between formula.The conversion between an inactive mode and pattern has been carried out in detail hereinafter with reference to Fig. 5
Description.
The frame 202 and 204 of method 200B is similar with method 200A, and details are not described herein.206, judge in time threshold
Whether the uplink signal of terminal device 106 is received during value.The uplink signal can be that terminal device 106 is found for first
The feedback signal of signal or the second discovery signal.The first purpose for carrying out the judgement is to determine covering model in transfer point 104-1
With the presence or absence of the terminal device 106 for needing access network in enclosing.
If it is determined that in the presence of the terminal device 106 for needing to access, in method 200B returns frames 204 so as to transfer point 104-1
Continue to send the second discovery signal.On the other hand, if it is determined that there is no the terminal devices 106 for needing access network, then exist
208, set the second discovery signal to an inactive mode.In this way, it is possible to be advantageously reduced for other transfer points 104
It interferes and reduces the transfer point 104-1 power consumptions of itself.In certain embodiments, it is touched based on the uplink for terminal device 106
It sends out the measurement of reference signal and carries out pattern switching.
210, the instruction that the second discovery signal is arranged to an inactive mode is sent in the first discovery signal.As non-
Special field can be arranged in the first discovery signal to indicate that the second discovery signal is in inactive in restrictive embodiment
Pattern.In certain embodiments, in response in sometime receiving the feedback of terminal device 106 or receiving RAN 100
Some equipment instruction, transfer point 104-1 can enter activity pattern.Correspondingly, the second discovery signal will be transmitted again.
Fig. 3 shows the structure chart according to an embodiment of the present disclosure for finding signal.First shown in Fig. 3 finds letter
It number may include that first layer finds that the synchronizing signal SS 302 in signal and first layer have found the necessary system information ESI in signal
304.Although it should be appreciated that showing that the first discovery signal includes the SS 302 and first layer in first layer discovery signal in Fig. 3
It was found that both ESI 304 in signal, but first finds that signal can also include one in the two.First layer finds signal
In SS 302 carry cell 108 cell ID and can be cell 108 cover under terminal device 106 provide initially
Downlink synchronization, and first layer finds that the ESI 304 in signal carries limited necessary system information and and cell
The related information of transfer point 104-1 in 108.First layer finds the limited necessary system that the ESI 304 in signal is carried
Information may include the bandwidth etc. that system provides.SS in information related with transfer point 104-1 such as second level discovery signal
The resource distribution of 306 and the necessary system information ESI 308 in second level discovery signal.Information related with transfer point 104-1
Can also include the BRS 406 in second level discovery signal as shown in Figure 4.In the embodiments herein, " first layer "
" first " and " second layer " and " second " may be used interchangeably to distinguish two kinds of discovery signals.
First layer finds that the ESI 304 in SS 302 and first layer discovery signal in signal occupies preconfigured time-frequency
Resource and be transmitted with the period 1 310.In the case where cell 108 has multiple transmission point 104, first layer is found in signal
SS 302 and first layer find signal in ESI 304 by all or part of transfer points 104 in cell 108 to be similar to list
The mode of frequency net is synchronized in identical running time-frequency resource to be transmitted, and uses the transimission power and/or wider wave beam improved
Bandwidth is covered with reaching suitable signal, to provide the quality of 106 received signal of high terminal device.When system is in millimeter
When wave frequency section is operated, make in this way than advantageous, because the path loss millimeter wave frequency band of signal can be with transmission
Distance and increase sharply.
Second level discovery signal is with the SS 306 and second layer hair in the second level discovery signal specific to transfer point 104-1
The form of ESI 308 in existing signal is transmitted, to be primarily used to realize between transfer point 104-1 and terminal device 106
Beam scanning and wave beam identification and feedback.Although it should be appreciated that showing that the second discovery signal includes second level discovery letter in Fig. 3
Both ESI 308 in SS 306 and second level discovery signal in number, but second finds that signal can also include in the two
One.The ESI in SS 306 and second level discovery signal in the second level discovery signal specific to transfer point 104-1
In the case of 308 form, the SS 306 in second level discovery signal selectively carries the mark of transfer point 104-1 and can be with
It supports the beam scanning of transfer point 104-1 operate in millimeter wave frequency band and wave beam alignment and wave beam identification and feeds back.Second
Layer finds that the ESI 308 in signal is selectively presented to provide other necessary system informations specific to cell 108 and specific
In the system information of transfer point 104-1.
As it was noted above, other than realizing the necessary system information of synchronous and acquisition, the second discovery signal can be used for propping up
Hold beam scanning/alignment between transfer point 104-1 and terminal device 106 in transfer point 104-1 coverage areas and wave
Beam tracks.Depending on the radio architectures of used transfer point 104-1, transfer point 104-1 may need different resource distributions
To transmit the ESI 308 in SS 306 and second level discovery signal in second level discovery signal.Radio architectures are such as digital
Beamforming architectures and mixed-beam shape framework.There is equal number of rf chain and day in digital beamforming architectures
Line.Mixed-beam shapes the number of antennas in framework and is much larger than rf chain number.Time/frequency for scanning a transmission beam
Rate/code resource representation is that a transmission beam scans (TxBS) resource unit, and entire biography is covered if necessary to N number of transmission beam
Defeated region then needs N number of TxBS resource units.If the configuration of N number of TxBS resource units is made dependent on transfer point 104-1
Radio architectures, the then realization of system design will become complicated.
What is proposed in the disclosure finds the ESI 304 in signal to indicate the SS in second level discovery signal by first layer
306 and second level discovery signal in ESI 308 the problems caused by can efficiently solving different radio frequency framework.Such as in Fig. 3
Shown in, different TxBS resource units are re-used in a manner of frequency division multiplexing.This especially closes digital radio architectures
It is suitable, because the different beam formings specific to wave beam can be implemented to be flexible in a base band.For mixed architecture, analog wave
Beam shaping will be only implemented in broadband.In certain embodiment, used particular radio-frequency framework, different TxBS are depended on
Resource unit also can otherwise be re-used, and be such as time-multiplexed (TDM) or mixed frequency division multiplexing/time division multiplexing
(FDM/TDM)。
In certain embodiments, it is same to find that the SS 302 in signal can reuse the existing master in LTE system for first layer
Walk signal and secondary synchronization signal (PSS/SSS).This is because the purpose of the first synchronizing signal is to provide downlink synchronization,
That is, not being related to beam scanning/wave beam alignment.The signal structure of second synchronizing signal is designed such that in this way
Two synchronizing signals can be used for providing beam scanning/be aligned and optionally provide synchronization.Second synchronizing signal can also be
Enhanced on existing LTE PSS/SSS architecture basics to provide effective support for beam scanning/alignment.
In certain embodiments, first layer finds that the SS 302 in signal can carry cell ID.Second level discovery is believed
SS 306 in number optionally carries transmission point identification with the transfer point 104 in distinguishing cell.For general data/control letter
Road/signal transmission, scrambling or sequence generate the function that can be designed to cell ID and transmit point identification.Transmitting point identification can
With for reducing the interference between the transfer point 104 in cell 108, and cell ID can be used for reducing it is dry between cell
It disturbs.In certain embodiments, it is similar to the coordinated multipoint transmission of carrier wave polymerization, scrambling or sequence, which generate, to be needed to be especially designed.
In certain embodiments, in order to realize the reliable covering of cell, first find signal by all in cell 108 or
Fractional transmission point 104, which is synchronized in a manner of single frequency network in identical running time-frequency resource, to be transmitted, and the transimission power of raising is used；And
Second discovery signal is transmitted using beam scanning to overcome the big path loss and resistance under high frequency situations by transfer point 104-1
Gear.In certain embodiments, adaptive power adjustment may be implemented in transfer point 104-1.
Fig. 4 shows the structure chart of discovery signal according to another embodiment of the present disclosure.It finds to believe with second in Fig. 3
Number difference, the second discovery signal in Fig. 4 include the second layer beam reference signal BRS 406 of one or more wave beams.It should
Understand, the structure of the discovery signal found in signal and embodiment shown in Fig. 4 in embodiment shown in Fig. 3 the difference is that
Second finds that signal is different, and both find signals be the disclosure discovery signal non-limiting example.BRS's 406
The identification information and first transmission point of sequence and/or occupied time-frequency resource indication first transmission point are used when being transmitted
Wave beam.The purpose of second layer BRS 406 is to provide beam scanning/wave beam alignment.Second layer BRS 406 can use CDM/
FDM/TDM modes are multiplexed, and in Fig. 4 indicate time-frequency resources using a rectangle 408, multiple orthogonal or accurate orthogonal
BRS sequences can use code division multiplexing CDM mode be re-used.
In certain embodiments, first layer finds that the synchronizing signal SS 402 in signal can carry the mark of cell 108,
And for the BRS 406 in second level discovery signal, it can be marked using different orthogonal BRS sequences in transfer point 104-1
Know the different transmission beams of transfer point 104-1.BRS sequences used in transfer point 104 in cell 108 can be set by combining
Meter, so that the BRS sequences between transfer point 104 can be orthogonal or quasi-orthogonal, to inhibit to be done between potential wave beam
It disturbs.
In certain embodiments, terminal device 106 can carry out the BRS 406 in the second level discovery signal that receives
Analysis, and determination carries out data transmission used transmission beam.In certain embodiments, terminal device 106 can obtain
The index of selected transmission beam.The network equipment 102 is fed back to by 106 selected transmission beam of terminal device index,
Transfer point 104 belonging to selected wave beam can be by the network equipment 102 according to the transmitted waveform of the transfer point 104 in cell
Index obtain.In certain embodiments, the index of transmitted waveform is stored in the memory of the network equipment 102.It should
Understand, in addition to the network equipment 102, the equipment of the feedback of receiving terminal apparatus 106 can also be other networks in communication system
Node.Fig. 5 shows the structure chart of the discovery signal according to the another embodiment of the disclosure.It can be found that only existing in Fig. 5
One finds signal, that is, transfer point 104-1 does not transmit the second discovery signal.Interference can be reduced simultaneously by not transmitting the second discovery signal
And improve resource efficiency and power efficiency.All transfer points 104 or the transmission of fractional transmission point 104 first in cell 108 are found
Signal is to promote the initial access of terminal device 106.This is in the coverage area of transfer point 104-1 without terminal device 106
In the case of it is particularly suitable because in such a case it is not necessary to specific to transfer point 104-1 second find signal.This is not only
The interference between transfer point is reduced, the power consumption of transfer point 104-1 is also reduced.
In certain embodiments, the first discovery signal designation second finds that signal is in activity pattern or an inactive mode.
In certain embodiments, in the case of such as in the coverage area of transfer point 104-1 without TE, be practically without it is necessary so that
Transfer point 104-1 transmission second finds signal.The interference between transfer point 104 can be reduced by stopping transmission second signal, simultaneously
Reduce the power consumption of transfer point 104-1.
In certain embodiments, in response to not receiving the uplink signal of terminal device 136 during time threshold, second
It was found that signal enters an inactive mode.In certain embodiments, system is not needed in such as 6GHz low-frequency range operations below
Beam scanning is carried out, at this moment can set second level discovery to an inactive mode.In certain embodiments, in transfer point 104-
In the case of having terminal device 106 in 1 coverage area, no matter the terminal device 106 is in idle or connection status, all
Need to send the second discovery signal to support beam scanning/alignment and the wave beam between transfer point 104-1 and terminal device 106
Tracking.
Fig. 6, which is shown, is used for terminal device 106 in the Radio Access Network RAN 100 according to the embodiment of present disclosure
Initial access device 600 structure diagram.In certain embodiments, device 600 can be implemented as first transmission point 104-
1.There is multiple transmission point 104 in cell 108 in RAN 100.Device 600 includes the first discovery 602 He of signal transmission unit
Second finds signal transmission unit 602.First discovery signal transmission unit 602 is configured as the first of multiple transmission point 104
With the second transmission point 104-2 of multiple transmission point 104 synchronously with the transmission of period 1 310 and RAN 100 at transfer point 104-1
In cell 108 associated first find signal.Second discovery signal transmission unit 602 is configured as in first transmission point
At 104-1, find that signal, the first discovery signal refer to the transmission of second round 312 associated with first transmission point 104-1 second
Show the resource allocation information of the second discovery signal.
For purposes of clarity, certain optional modules of device 600 are not shown in figure 6.On it will be appreciated, however, that
Each feature described in literary reference chart 2 is equally applicable to device 600.Moreover, the modules of device 600 can be hardware mould
Block can also be software module.For example, in certain embodiments, device 600 can it is some or all of using software and/or
Firmware is realized, such as is implemented as comprising computer program product on a computer-readable medium.Alternatively or additionally,
Device 600 some or all of can be realized based on hardware, such as be implemented as integrated circuit (IC), application-specific integrated circuit
(ASIC), system on chip (SOC), field programmable gate array (FPGA) etc..The scope of the present disclosure is not limited in this respect.
Fig. 7 shows the block diagram for the equipment 700 for being suitable for realizing embodiment of the disclosure.Equipment 700 can be used for realizing biography
Defeated point 104.As shown, equipment 700 includes controller 710.The operation of 710 control device 700 of controller and function.For example,
In certain embodiments, controller 710 can be executed by means of the instruction 730 stored in coupled memory 720
Various operations.Memory 720 can be any suitable type suitable for local technical environment, and can utilize any conjunction
Suitable data storage technology realizes that the memory device, magnetic memory device and system, light including but not limited to based on semiconductor deposit
Memory device and system.Although illustrate only a memory cell in Fig. 7, there can be multiple physics in equipment 700
Different memory cells.
Controller 710 can be any suitable type suitable for local technical environment, and may include but unlimited
In all-purpose computer, special purpose computer, microcontroller, digital signal controller (DSP) and based on controller multinuclear control
One or more of device framework is multiple.Equipment 700 can also include multiple controllers 710.Controller 710 and transceiver 740
Coupling, transceiver 740 can realize sending and receiving for information by means of one or more antennas 750 and/or other component.
When equipment 700 serves as transfer point, controller 710 and transceiver 740 can with compounding practice, with realize above with reference to
The method 200A and 200B of Fig. 2A and Fig. 2 B descriptions.It is suitable for equipment 700 above with reference to all features described in Fig. 2,
This is repeated no more.
In the description to embodiment of the disclosure, term " comprising " and its similar term should be understood as open packet
Contain, i.e., " includes but not limited to ".Term "based" should be understood as " being based at least partially on ".Term " one embodiment " or
" embodiment " should be understood as " at least one embodiment ".
It should be noted that embodiment of the disclosure can be realized by the combination of hardware, software or software and hardware.Firmly
Part part can be realized using special logic；Software section can store in memory, by instruction execution system appropriate,
Such as microprocessor or special designs hardware execute.It will be appreciated by those skilled in the art that above-mentioned device and method can
It is realized with using computer executable instructions and/or being included in the processor control code, such as in programmable memory
Or such code is provided in the data medium of such as optics or electrical signal carrier.
In addition, although the operation of disclosed method is described with particular order in the accompanying drawings, this do not require that or
Person, which implies, to execute these operations according to the particular order, or expectation could be realized by having to carry out operation shown in whole
Result.On the contrary, the step of describing in flow chart, which can change, executes sequence.Additionally or alternatively, it is convenient to omit Mou Xiebu
Suddenly, multiple steps are combined as a step to execute, and/or a step is decomposed into execution of multiple steps.It shall also be noted that
It can be embodied in one apparatus according to the feature and function of two or more devices of the disclosure.Conversely, above-described
The feature and function of one device can be further divided into be embodied by multiple devices.
Although describing the disclosure by reference to several specific embodiments, but it is to be understood that it is public that the present disclosure is not limited to institutes
The specific embodiment opened.The disclosure is intended to cover in spirit and scope of the appended claims included various modifications and equivalent
Arrangement.
Claims (19)
1. a kind of method in Radio Access Network (RAN) for the initial access of terminal device, have in the cell in the RAN
There is multiple transmission point, the method includes：
At the first transmission point of the multiple transfer point, the second transmission point with the multiple transfer point is synchronously with first week
Phase transmission associated with the cell in the RAN first finds signal；And
At the first transmission point, signal, institute are found with second round transmission associated with the first transmission point second
State the resource allocation information of the second discovery signal described in the first discovery signal designation.
2. according to the method described in claim 1, further including：
In response to not receiving the uplink signal of the terminal device during time threshold, signal setting is found by described second
For an inactive mode；And
The instruction that the second discovery signal is arranged to an inactive mode is sent in the first discovery signal.
3. according to the method described in claim 1, wherein described first finds that signal carries the specific information of cell, until
The resource allocation information of signal, and described second are found including cell ID, part system message and described second less
It was found that signal carries the specific information of first transmission point, identification information and the institute of the first transmission point are included at least
State the beam information used in first transmission point.
4. according to the method described in claim 1, wherein described first finds that signal includes following at least one：
For the first synchronizing signal synchronous between the terminal device and the cell, and
It is used to indicate at least partly system information of the resource allocation information and the cell that described second finds signal
First necessary system information (ESI).
5. according to the method described in claim 1, wherein described second finds that signal includes following at least one with described in instruction
The wave beam that first transmission point is transmitted：
For the second synchronizing signal synchronous between the terminal device and the first transmission point, and
It is used to indicate at least partly system information of the cell and the second necessary system of the first transmission point relevant information
Information (ESI).
6. according to the method described in claim 1, the wherein described second discovery signal includes the wave beam ginseng of one or more wave beams
Examine signal (BRS), the sequence of the BRS and/or occupied the time-frequency resource indication identification information of the first transmission point
And the wave beam that transmission is used.
7. according to the method described in claim 1, the first transmission point in the wherein described cell and the second transmission point
In a manner of single frequency network signal is found in identical running time-frequency resource synchronous transfer identical described first.
8. according to the method described in claim 1, the wherein described period 1 is the integral multiple of the second round.
9. according to the method described in claim 1, being wherein used for transmission the described first power and/or beam angle for finding signal
More than the power and/or beam angle for being used for transmission the second discovery signal.
There is the transfer point and at least 10. the transfer point in a kind of Radio Access Network (RAN), in the cell in the RAN
One other transfer point, the transfer point include：
Controller；
Memory including instruction, when described instruction is executed by the controller so that the transfer point executes action, described
Action includes：
At the transfer point, at least one other transfer point synchronously in period 1 transmission and the RAN
The cell associated first finds signal；And
At the transfer point, signal, first hair are found with second round transmission associated with the transfer point second
The resource allocation information of second discovery signal described in existing signal designation.
11. transfer point according to claim 10, the action further include：
In response to not receiving the uplink signal of terminal device during time threshold, find that signal is set as non-by described second
Activity pattern；And
The instruction that the second discovery signal is arranged to an inactive mode is sent in the first discovery signal.
12. transfer point according to claim 10, wherein described first finds that signal carries the specific information of cell,
It finds the resource allocation information of signal including at least cell ID, part system message and described second, and described
Second finds that signal carries the specific information of first transmission point, include at least the identification information of the first transmission point with
And the beam information used in the first transmission point.
13. transfer point according to claim 10, wherein described first finds that signal includes following at least one：
For the first synchronizing signal synchronous between terminal device and the cell, and
It is used to indicate at least partly system information of the resource allocation information and the cell that described second finds signal
First necessary system information (ESI).
14. transfer point according to claim 10, wherein the second discovery signal includes following at least one with instruction
The wave beam that the transfer point is transmitted：
For the second synchronizing signal synchronous between terminal device and the transfer point, and
It is used to indicate at least partly system information of the cell and the second necessary system letter of the relevant information of the transfer point
It ceases (ESI).
15. transfer point according to claim 10, wherein the second discovery signal includes the wave of one or more wave beams
Beam reference signal (BRS), the sequence of the BRS and/or occupied the time-frequency resource indication mark of the first transmission point
Wave beam used in information and transmission.
16. transfer point according to claim 10, wherein the transfer point in the cell and it is described it is at least one its
He has found signal at transfer point in a manner of single frequency network in identical running time-frequency resource synchronous transfer identical described first.
17. transfer point according to claim 10, wherein the period 1 is the integral multiple of the second round.
18. transfer point according to claim 10, wherein being used for transmission the power and/or beam angle of first signal
More than the power and/or beam angle for being used for transmission the second discovery signal.
19. a kind of program product is tangibly stored in non-transient computer-readable media and includes the executable finger of machine
It enables, described instruction makes the computer execute such as claim 1-9 any one of them methods when being computer-executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026188.0A CN108307476B (en) | 2017-01-13 | 2017-01-13 | Method and device for initial access of terminal device in wireless access network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710026188.0A CN108307476B (en) | 2017-01-13 | 2017-01-13 | Method and device for initial access of terminal device in wireless access network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108307476A true CN108307476A (en) | 2018-07-20 |
| CN108307476B CN108307476B (en) | 2021-04-06 |
Family
ID=62872357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710026188.0A Active CN108307476B (en) | 2017-01-13 | 2017-01-13 | Method and device for initial access of terminal device in wireless access network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108307476B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021223227A1 (en) * | 2020-05-08 | 2021-11-11 | 北京小米移动软件有限公司 | Synchronization signal transmission method and apparatus, and device and readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103582085A (en) * | 2012-08-10 | 2014-02-12 | 华为技术有限公司 | Access method and device in heterogeneous network |
| WO2015047002A1 (en) * | 2013-09-27 | 2015-04-02 | Samsung Electronics Co., Ltd. | Methods and apparatus for discovery signals for lte advanced |
| CN105101280A (en) * | 2014-05-09 | 2015-11-25 | ***通信集团公司 | Transmission point identifying and RRM (radio resource management) measuring method, equipment and system |
| CN105191426A (en) * | 2013-05-07 | 2015-12-23 | 日本电气株式会社 | Communication system |
| US20160037513A1 (en) * | 2014-07-31 | 2016-02-04 | Microsoft Corporation | Discovery reference signal occasion configuration |
-
2017
- 2017-01-13 CN CN201710026188.0A patent/CN108307476B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103582085A (en) * | 2012-08-10 | 2014-02-12 | 华为技术有限公司 | Access method and device in heterogeneous network |
| CN105191426A (en) * | 2013-05-07 | 2015-12-23 | 日本电气株式会社 | Communication system |
| WO2015047002A1 (en) * | 2013-09-27 | 2015-04-02 | Samsung Electronics Co., Ltd. | Methods and apparatus for discovery signals for lte advanced |
| CN105101280A (en) * | 2014-05-09 | 2015-11-25 | ***通信集团公司 | Transmission point identifying and RRM (radio resource management) measuring method, equipment and system |
| US20160037513A1 (en) * | 2014-07-31 | 2016-02-04 | Microsoft Corporation | Discovery reference signal occasion configuration |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021223227A1 (en) * | 2020-05-08 | 2021-11-11 | 北京小米移动软件有限公司 | Synchronization signal transmission method and apparatus, and device and readable storage medium |
| CN113924808A (en) * | 2020-05-08 | 2022-01-11 | 北京小米移动软件有限公司 | Method, device and equipment for transmitting synchronous signal and readable storage medium |
| CN113924808B (en) * | 2020-05-08 | 2024-06-04 | 北京小米移动软件有限公司 | Method, device, equipment and readable storage medium for transmitting synchronous signal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108307476B (en) | 2021-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3609225B1 (en) | Communication method, base station and system | |
| CN109792284B (en) | Method for assisting beam scanning, tracking and recovery | |
| CN110730489B (en) | Method and apparatus for system information acquisition in a wireless communication system | |
| TWI696357B (en) | Method and user equipment for measurement timing configuration for csi-rs | |
| CN110582951B (en) | User equipment and base station participating in cell measurement procedure | |
| CN106537964B (en) | Apparatus, network and method for network adaptation and utilizing downlink discovery reference signals | |
| EP2984888B1 (en) | Systems and methods for network adaptation support in wireless network | |
| CN110463105B (en) | Implicit System Information (SI) content change to enable soft combining | |
| US20220078678A1 (en) | User equipment (ue) and method for performing random access for beamforming-based connected mode handover | |
| US8588762B2 (en) | Method and apparatus for performing channel measurement for cell | |
| US20170273015A1 (en) | Cell and mobile terminal discovery method | |
| CN110249657A (en) | Pass through the method for terminal monitoring Radio Link and the equipment for supporting this method in a wireless communication system | |
| TWI693840B (en) | Method of received signal strength indication measurement and user equipment thereof | |
| US10231145B2 (en) | Sounding reference signal based small cell activity control | |
| KR20160108479A (en) | Systems, methods and devices for opportunistic networking | |
| KR102358569B1 (en) | Method and apparatus of mobile communication for wider bandwidth system | |
| CN110291747A (en) | User equipment and wireless communications method | |
| CN109891977A (en) | Mobility reference signal is reused in the system based on wave beam to execute radio link supervision | |
| CN108293195A (en) | Wireless device, wireless network node and the method executed wherein for managing the signaling in cordless communication network | |
| JP6872634B2 (en) | Cooperative cell determination method and network device | |
| WO2020020376A1 (en) | Reference signal sending and receiving method, device, and apparatus | |
| US20230291458A1 (en) | Beam processing method and apparatus and communication device | |
| WO2014114106A1 (en) | Uplink data reception method and apparatus for wireless transceiving device | |
| CN112237039A (en) | Resource allocation for cross-link interference measurement | |
| CN112788642A (en) | Beam fault recovery method and user equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |