CN108513323A - A kind of method that UE progress cell selections are assisted in the base stations IAB - Google Patents
A kind of method that UE progress cell selections are assisted in the base stations IAB Download PDFInfo
- Publication number
- CN108513323A CN108513323A CN201810687667.1A CN201810687667A CN108513323A CN 108513323 A CN108513323 A CN 108513323A CN 201810687667 A CN201810687667 A CN 201810687667A CN 108513323 A CN108513323 A CN 108513323A
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- China
- Prior art keywords
- iab
- base stations
- backhaul link
- information
- assisted
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/04—Reselecting a cell layer in multi-layered cells
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of method that the base stations IAB assist UE to carry out cell selection, it is characterised in that：The base stations IAB send the connection topology information of the base stations IAB and/or the signal quality information of backhaul link by the forms of broadcasting to UE, when UE is when carrying out cell selection or cell reselection, UE, by the above- mentioned information provided that broadcasts the message, selects the suitable base stations IAB to carry out cell access according to the base stations IAB.The demand of UE can be better met using technical solution of the present invention, promote user experience.This programme is easily achieved, and is suitable for various different scenes.
Description
Technical field
The present invention relates to 5G NR (New Radio) wireless communication technology fields more particularly to a kind of base stations IAB
The base stations IAB assist UE to carry out under (Integrated Access and Backhaul, access and passback integrated base station) scene
The method of cell selection/reselection.
Background technology
Compared with LTE, 5G NR technologies can use the bandwidth of bigger, can be used for example millimeter wave frequency band, and can be with
Using extensive antenna and multiple-beam system, therefore 5G is capable of providing higher system velocity, is that 5G NR develop and apply IAB
Base station provides condition.The so-called base stations IAB are exactly that the base station is integrated with wireless access links (i.e. access link Access
Link) and wireless backhaul links (i.e. backhaul link Backhaul link), wherein access link is between the base stations UE and IAB
Communication link, communication link of the wireless backhaul link between the base stations IAB carry out data back, therefore the base stations IAB need not have
Transmission network network carries out data back.Based on this, the base stations IAB are easier to be deployed in intensive scene, alleviate deployment wire transmission
The burden of network.
As shown in Figure 1, the base stations IAB provide the wireless backhaul of wireless access and access service for UE.The base stations IAB donor
(base stations ownership IAB) provides wireless backhaul function to the base stations IAB, and provides UE and the interface of core net.It can from Fig. 1
Go out, there are wired connection in the base stations IAB donor with core net, do not have wired connection, the base stations IAB logical between the base stations IAB and core net
It crosses wireless backhaul links and is connected to the base stations IAB donor, to make UE be attached with core net.
For LTE, user is usually according to next with received signal strength when progress cell selection carries out cell access
Select cell, the high cell access of preferential selection signal intensity.Due to the base stations IAB wireless backhaul link and there are multi-hops
The base stations IAB, if user only selects cell to access with the height of received signal strength, may the cell of access cannot meet use
The demand at family, or the cell of access is not optimal selection for user.
Invention content
For problem of the prior art, the present invention provides a kind of base stations IAB to assist the method that UE carries out cell selection.
Technical scheme of the present invention provides a kind of method that the base stations IAB assist UE to carry out cell selection, and the base stations IAB pass through wide
It broadcasts form and sends the connection topology information of the base stations IAB and/or the signal quality information of backhaul link to UE, when UE is carrying out cell
When selection or cell reselection, UE, by the above- mentioned information provided that broadcasts the message, selects the suitable base stations IAB according to the base stations IAB
Carry out cell access.
Moreover, signal of the base stations IAB by broadcast the message the connection topology information from the base stations IAB to UE and backhaul link that send
Quality information, when UE is when carrying out cell selection or cell reselection, UE pays the utmost attention to connection topology information, considers backhaul again
Link-quality come determine access cell.
Moreover, signal of the base stations IAB by broadcast the message the connection topology information from the base stations IAB to UE and backhaul link that send
Quality information, when UE is when carrying out cell selection or cell reselection, UE pays the utmost attention to the demand of UE itself, considers connection again
Topology information finally considers backhaul link quality to determine the cell of access.
Moreover, the demand of UE initiated based on UE type of service, the type of UE or UE electricity.
Moreover, the base stations IAB send the connection topology information and/or backhaul chain of the base stations IAB by the forms of broadcasting to UE
The signal quality information on road is included in minimum system information and sends.
Moreover, when there are multiple backhaul links in the base stations IAB, the signal quality information method of determination of backhaul link is, by IAB
Base station selected backhaul link signal quality is best to be determined.
Moreover, backhaul link signal quality information is divided into different signal qualities using the signal quality information after quantization
Grade.
Moreover, the source of signal quality quantization is the received signal power or channel state information of reference signal.
Technical scheme of the present invention proposes, connection topology information and/or the backhaul of the base stations IAB are provided from the base stations IAB to UE
Link signal quality information can allow the selection more suitably base stations IAB when carrying out cell selection or cell reselection UE to carry out small
Area accesses, and so as to better meet the demand of UE, promotes user experience.This programme is easily achieved, and suitable for various
Different scenes will be used as potential 5G standards are interior at the international level to promote, and have important market value.
Description of the drawings
Fig. 1 is the IAB base station applies schematic diagrames of the prior art.
Fig. 2 is that the UE of the embodiment of the present invention selects the schematic diagram of a scenario of the base stations IAB access.
Fig. 3 is that the UE of the embodiment of the present invention selects the access of the base stations IAB to realize schematic diagram.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The present invention proposes, if the base stations IAB can provide a user its topology information and backhaul link signal quality, user
The more suitably base stations IAB can be selected to be accessed, the demand of user can be better met.As shown in Fig. 2, user UE1 is same
When in the overlay area of the base stations IAB 3 and the base stations IAB 1, if the base stations selection IAB 3 are accessed, only need a jump that can connect
Enter the base stations IAB donor, if the base stations selection IAB 1 are accessed, needs double bounce that could access the base stations IAB donor.Obviously
, the base stations jump IAB 3 are better than two base stations IAB 1 in the performances such as propagation delay time and transmission reliability.Therefore, UE1
Should the base stations priority access IAB 3 more should the base stations priority access IAB especially when UE1 has the low business demand of delay requirement
3.In addition, the backhaul link due to the base stations IAB also wirelessly connects, when user selects the access of the base station cells IAB
When, if it is possible to the signal quality information of the backhaul link of the base stations IAB is got, then user can select backhaul link signal
The base stations IAB of better quality are accessed.Such as UE2 simultaneously in the coverage area of the base stations IAB 2 and the base stations IAB 3, if the base stations IAB
2 backhaul link signal quality is better than the backhaul link signal quality of the base stations IAB 3, then the base stations UE2 priority access IAB 2.
Therefore, the present invention proposes, the base stations IAB by broadcast the message to UE send IAB base stations connection topology information and/or
The signal quality information of backhaul link, when UE is carrying out cell selection or when cell reselection, UE can be according to the demand of UE simultaneously
In conjunction with the above- mentioned information that the base stations IAB provide, to which UE can select more suitable IAB bases when carrying out cell selection or cell reselection
It stands and carries out cell access, to better meet the demand of UE.When it is implemented, broadcasting the connection topology information of the base stations IAB or returning
One of the signal quality information of journey link, UE are selected when carrying out cell selection or cell reselection according to corresponding broadcasted content
It selects and also can be achieved on.It is highly preferred that the signal quality information of the connection topology information and backhaul link of the base stations broadcast IAB,
UE comprehensive descisions as needed when carrying out cell selection or cell reselection are selected.
One, the base stations IAB provide connection topology information and backhaul link signal quality information by way of broadcast to UE；
Connection topology information and backhaul link signal quality information are sent to UE in the form of broadcasting, specifically, the information
It may be embodied in minimum system information and send；
Connection topology information indicates that the base stations IAB are a few base stations jump IAB.Wherein 0 jump then indicates that the base stations IAB are IAB
The base stations donor.Such as can indicate the information with 3bit, wherein 000 indicates 0 jump, the as base stations IAB donor, 001 indicates
The base stations IAB are jumped for 1,010 is expressed as 2 base stations jump IAB, and so on.
Backhaul link signal quality information indicates the signal quality of the backhaul link of the base stations IAB, when the base stations IAB have it is multiple
When backhaul link, the base station selected backhaul link signal qualities of IAB it is best broadcast；For example, there are two backhauls in the base stations IAB 1
Link, the respectively base stations IAB 1 are connected to the base stations IAB 2 by backhaul link, and the base stations IAB 1 are connected to IAB bases by backhaul link
Stand 3, if the former backhaul link signal quality is better than the latter, the backhaul link signal quality information that the base stations IAB 1 are broadcasted is
The signal quality information of backhaul link between the base stations IAB 1 and the base stations IAB 2.
Using the signal quality information after quantization, which can be divided into more backhaul link signal quality information
A grade.Assuming that being divided into four grades, indicated using 2bit, as 00,01,10,11 indicates different signal qualities etc. respectively
Grade is reasonable to judge in quick selection；The source of signal quality quantization is the received signal power or channel status of reference signal
Information.
Minimum system information is the standardized term of the art, indicates the collection of information necessary to UE access system
It closes.
Two, when UE needs to carry out cell selection to access cell, UE can be according to the above- mentioned information of IAB base station broadcasts
To determine that the cell of access further determines the cell of access according to the demand of above- mentioned information combination UE；
When it is implemented, the demand of UE can be the type of service that UE is initiated, and the type of UE, the electricity etc. of UE.
Specifically, UE can only consider connection topology information and backhaul link signal quality information, i.e., the need of UE are not considered
It asks, only pays the utmost attention to connection topology information, consider backhaul link quality again to determine the cell of access.
Or UE can pay the utmost attention to the demand of UE, consider connection topology information again, finally consider backhaul link signal
Quality information come determine access cell.
When it is implemented, can preassign specifically by the way of.
For example, as shown in figure 3, UE1 is in simultaneously under the covering of the base stations IAB 3 and the base stations IAB 1, therefore UE1 can be selected
Select the base stations access IAB 1 or the base stations IAB 3.UE1 can obtain IAB according to the topology information that the base stations IAB 1 and the base stations IAB 3 provide
Base station 1 is 2 base stations jump IAB, and the base stations IAB 3 are 1 base stations jump IAB, then the base stations UE access IAB 3, particularly, when UE1 has low time delay
When business demand, the base stations IAB 3 should be more accessed；In coverage areas of the UE2 simultaneously in the base stations IAB 2 and the base stations IAB 3, according to
The backhaul link signal quality information that the base stations IAB 2 and the base stations IAB 3 are sent, the better IAB of UE access backhaul link signal quality
Base station 2.
When it is implemented, the automatic running that software mode realizes above scheme can be used in those skilled in the art.
One of example the above is only the implementation of the present invention is not intended to restrict the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made by within principle, should all be included in the protection scope of the present invention.
Claims (8)
1. the method that UE carries out cell selection is assisted in a kind of base stations IAB, it is characterised in that：The base stations IAB are by the forms of broadcasting to UE
The connection topology information of IAB base stations and/or the signal quality information of backhaul link are sent, when UE is in progress cell selection or small
When area's gravity treatment, UE, by the above- mentioned information provided that broadcasts the message, selects the suitable base stations IAB to carry out cell and connects according to the base stations IAB
Enter.
2. the method that UE carries out cell selection is assisted in a kind of base stations IAB according to claim 1, it is characterised in that：IAB bases
The signal quality information for the connection topology information and backhaul link that send IAB base stations to UE by broadcast message of standing, when UE into
When the selection of row cell or cell reselection, UE pays the utmost attention to connection topology information, considers backhaul link quality again to determine to connect
The cell entered.
3. the method that UE carries out cell selection is assisted in a kind of base stations IAB according to claim 1, it is characterised in that：IAB bases
The signal quality information for the connection topology information and backhaul link that send IAB base stations to UE by broadcast message of standing, when UE into
When the selection of row cell or cell reselection, UE pays the utmost attention to the demand of UE itself, considers connection topology information again, finally considers
Backhaul link quality come determine access cell.
4. the method that UE carries out cell selection is assisted in a kind of base stations IAB according to claim 3, it is characterised in that：UE's
The type for the type of service, UE that demand is initiated based on UE or the electricity of UE.
5. the method that UE carries out cell selection, feature are assisted in a kind of base stations IAB according to claim 1 or 2 or 3 or 4
It is：The base stations IAB send the connection topology information of the base stations IAB and/or the signal of backhaul link by the forms of broadcasting to UE
Quality information is included in minimum system information and sends.
6. the method that UE carries out cell selection, feature are assisted in a kind of base stations IAB according to claim 1 or 2 or 3 or 4
It is：When there are multiple backhaul links in the base stations IAB, the signal quality information method of determination of backhaul link is, base station selected by IAB
Backhaul link quality is best to be determined.
7. the method that UE carries out cell selection, feature are assisted in a kind of base stations IAB according to claim 1 or 2 or 3 or 4
It is：Backhaul link signal quality information is divided into different signal quality grades using the signal quality information after quantization.
8. the method that UE carries out cell selection is assisted in a kind of base stations IAB according to claim 7, it is characterised in that：Signal
The source of quality quantization is the received signal power or channel state information of reference signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810687667.1A CN108513323A (en) | 2018-06-28 | 2018-06-28 | A kind of method that UE progress cell selections are assisted in the base stations IAB |
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| CN201810687667.1A CN108513323A (en) | 2018-06-28 | 2018-06-28 | A kind of method that UE progress cell selections are assisted in the base stations IAB |
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| CN201810687667.1A Pending CN108513323A (en) | 2018-06-28 | 2018-06-28 | A kind of method that UE progress cell selections are assisted in the base stations IAB |
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Cited By (19)
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| CN109257212A (en) * | 2018-09-10 | 2019-01-22 | 武汉虹信通信技术有限责任公司 | A kind of method of the base station IAB access |
| WO2020056748A1 (en) * | 2018-09-21 | 2020-03-26 | Lenovo (Beijing) Limited | Method and apparatus for target integrated access and backhaul node selection |
| WO2020056700A1 (en) * | 2018-09-20 | 2020-03-26 | Nokia Shanghai Bell Co., Ltd. | Admission control in iab system |
| WO2020061917A1 (en) * | 2018-09-27 | 2020-04-02 | Lenovo (Beijing) Limited | Triggering buffer status report |
| CN110958620A (en) * | 2018-09-26 | 2020-04-03 | 成都华为技术有限公司 | Method and device for configuring measurement signal |
| WO2020088253A1 (en) * | 2018-10-29 | 2020-05-07 | 华为技术有限公司 | Data transmission method and apparatus for wireless backhaul network |
| WO2020093333A1 (en) * | 2018-11-08 | 2020-05-14 | Lenovo (Beijing) Limited | Method and apparatus for node selection and access control |
| WO2020143279A1 (en) * | 2019-01-11 | 2020-07-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Determination of ssb/rmsi periodicity for iab node |
| WO2020164569A1 (en) * | 2019-02-14 | 2020-08-20 | 中兴通讯股份有限公司 | Iab link control method, communication unit and computer readable storage medium |
| CN111586803A (en) * | 2019-02-15 | 2020-08-25 | 华为技术有限公司 | Communication method and related equipment |
| CN111836322A (en) * | 2019-06-05 | 2020-10-27 | 北京骑胜科技有限公司 | Communication method, device, equipment and medium for sharing equipment |
| CN112690020A (en) * | 2018-09-12 | 2021-04-20 | 瑞典爱立信有限公司 | First node, fourth node and methods for handling access to a communication network in a multi-hop deployment |
| CN112689973A (en) * | 2018-09-21 | 2021-04-20 | 联想(北京)有限公司 | Method and apparatus for integrated access and backhaul node selection |
| CN112956263A (en) * | 2018-11-01 | 2021-06-11 | 高通股份有限公司 | Configuration of resource patterns for integrated access and backhaul |
| CN112970310A (en) * | 2018-11-14 | 2021-06-15 | 苹果公司 | Integrated access and return mobile terminal signaling of published resources |
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| WO2022033667A1 (en) * | 2020-08-11 | 2022-02-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Adapting integrated access and backhaul node cell coverage |
| US11997653B2 (en) | 2018-11-01 | 2024-05-28 | Qualcomm Incorporated | Release configuration of soft resources in integrated access and backhaul |
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Cited By (33)
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|---|---|---|---|---|
| CN109257212B (en) * | 2018-09-10 | 2021-09-03 | 中信科移动通信技术股份有限公司 | IAB base station access method |
| CN109257212A (en) * | 2018-09-10 | 2019-01-22 | 武汉虹信通信技术有限责任公司 | A kind of method of the base station IAB access |
| CN112690020A (en) * | 2018-09-12 | 2021-04-20 | 瑞典爱立信有限公司 | First node, fourth node and methods for handling access to a communication network in a multi-hop deployment |
| WO2020056700A1 (en) * | 2018-09-20 | 2020-03-26 | Nokia Shanghai Bell Co., Ltd. | Admission control in iab system |
| US11582744B2 (en) | 2018-09-20 | 2023-02-14 | Nokia Technologies Oy | Admission control in IAB system |
| CN112689973B (en) * | 2018-09-21 | 2023-09-22 | 联想(北京)有限公司 | Method and apparatus for integrated access and backhaul node selection |
| WO2020056748A1 (en) * | 2018-09-21 | 2020-03-26 | Lenovo (Beijing) Limited | Method and apparatus for target integrated access and backhaul node selection |
| CN112689973A (en) * | 2018-09-21 | 2021-04-20 | 联想(北京)有限公司 | Method and apparatus for integrated access and backhaul node selection |
| US11743816B2 (en) | 2018-09-21 | 2023-08-29 | Lenovo (Beijing) Limited | Method and apparatus for target integrated access and backhaul node selection |
| CN110958620A (en) * | 2018-09-26 | 2020-04-03 | 成都华为技术有限公司 | Method and device for configuring measurement signal |
| US11864132B2 (en) | 2018-09-26 | 2024-01-02 | Huawei Technologies Co., Ltd. | Measurement signal configuration method and apparatus |
| CN110958620B (en) * | 2018-09-26 | 2021-05-11 | 成都华为技术有限公司 | Method and device for configuring measurement signal |
| US11570658B2 (en) | 2018-09-27 | 2023-01-31 | Lenovo (Beijing) Limited | Triggering a buffer status report |
| WO2020061917A1 (en) * | 2018-09-27 | 2020-04-02 | Lenovo (Beijing) Limited | Triggering buffer status report |
| WO2020088253A1 (en) * | 2018-10-29 | 2020-05-07 | 华为技术有限公司 | Data transmission method and apparatus for wireless backhaul network |
| US11997653B2 (en) | 2018-11-01 | 2024-05-28 | Qualcomm Incorporated | Release configuration of soft resources in integrated access and backhaul |
| CN112956263A (en) * | 2018-11-01 | 2021-06-11 | 高通股份有限公司 | Configuration of resource patterns for integrated access and backhaul |
| WO2020093333A1 (en) * | 2018-11-08 | 2020-05-14 | Lenovo (Beijing) Limited | Method and apparatus for node selection and access control |
| CN112970286A (en) * | 2018-11-08 | 2021-06-15 | 联想(北京)有限公司 | Method and apparatus for node selection and access control |
| CN112970310A (en) * | 2018-11-14 | 2021-06-15 | 苹果公司 | Integrated access and return mobile terminal signaling of published resources |
| CN112970310B (en) * | 2018-11-14 | 2024-05-10 | 苹果公司 | Integrated access and backhaul mobile terminal signaling for published resources |
| US12015974B2 (en) | 2019-01-11 | 2024-06-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Determination of SSB/RMSI periodicity for IAB node |
| US11564152B2 (en) | 2019-01-11 | 2023-01-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Determination of SSB/RMSI periodicity for IAB node |
| WO2020143279A1 (en) * | 2019-01-11 | 2020-07-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Determination of ssb/rmsi periodicity for iab node |
| WO2020164569A1 (en) * | 2019-02-14 | 2020-08-20 | 中兴通讯股份有限公司 | Iab link control method, communication unit and computer readable storage medium |
| CN111586803B (en) * | 2019-02-15 | 2021-09-07 | 华为技术有限公司 | Communication method and related equipment |
| CN111586803A (en) * | 2019-02-15 | 2020-08-25 | 华为技术有限公司 | Communication method and related equipment |
| CN113785615A (en) * | 2019-05-02 | 2021-12-10 | 夏普株式会社 | Conditional handover for wireless relay networks |
| CN111836322B (en) * | 2019-06-05 | 2023-04-28 | 北京骑胜科技有限公司 | Communication method, device, equipment and medium for sharing equipment |
| CN111836322A (en) * | 2019-06-05 | 2020-10-27 | 北京骑胜科技有限公司 | Communication method, device, equipment and medium for sharing equipment |
| WO2021203267A1 (en) * | 2020-04-08 | 2021-10-14 | Apple Inc. | Cell selection for iab nodes |
| EP4197242A1 (en) * | 2020-08-11 | 2023-06-21 | Telefonaktiebolaget LM Ericsson (publ) | Adapting integrated access and backhaul node cell coverage |
| WO2022033667A1 (en) * | 2020-08-11 | 2022-02-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Adapting integrated access and backhaul node cell coverage |
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