CN106550433A - A kind of accidental access method in super-intensive network - Google Patents
A kind of accidental access method in super-intensive network Download PDFInfo
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- CN106550433A CN106550433A CN201510590717.0A CN201510590717A CN106550433A CN 106550433 A CN106550433 A CN 106550433A CN 201510590717 A CN201510590717 A CN 201510590717A CN 106550433 A CN106550433 A CN 106550433A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000004044 response Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000012790 confirmation Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 8
- 238000010295 mobile communication Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
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- 230000008901 benefit Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention proposes the accidental access method in a kind of super-intensive network, including：The Stochastic accessing preamble that access point AP receiving terminals UE of virtual subdistrict send, the preamble indexes, Physical Random Access Channel PRACH indexes and preamble receiving powers are sent to the centralized control node of the virtual subdistrict or other AP of the virtual subdistrict, consult to determine by which AP to reply accidental access response RAR by the AP of the centralized control node or the virtual subdistrict.During the present invention enables UDN virtual subdistricts, UE Stochastic accessings are normally carried out, and select optimum AP to process the random access procedure of the UE.
Description
Technical field
The present invention relates to the accidental access method in wireless communication system, more particularly to a kind of super-intensive network.
Background technology
With the development of wireless communication technology, and the further serious hope of low time delay, two-forty, the evolution version LTE-A of LTE has obtained the research and development energetically of mobile communication industry.And it is quick commercial.New technology is introduced in the LTE-A stages, the wireless technologys such as such as carrier aggregation CA (Carrier Aggregation), relaying Relay technologies, multipoint cooperative CoMP (Coordinated Multipoint), eICIC (Enhanced Inter-Cell Interference Coordination).Although LTE and LTE-A have obtained big good development form, mobile communication still can face an a little huge challenge, so mobile communication business is compared the demand that LTE-A has the third generation mobile communication system of higher ability and is grown with each passing day to development, i.e. 5G.Following magnanimity terminal meeting accessing mobile communication network, supports panoramic application service, such as picture transfer, video stream media, increasing service based on cloud computing technology etc..So for following 5G, need higher network capacity, higher data access speed, support magnanimity connection, lower wireless access delay, more inexpensive, more high energy efficiency, in emergency circumstances emergency communication ability it is more strong etc..
UDN (Ultra-Dense Network, super-intensive network) technology, mainly for scenes such as office, residential areas of denseness, intensive block, apartment and big assemblies, solves network capacity requirements.In UDN networks, virtual subdistrict technology eliminates cell edge, reduces flow process complexity and signaling consumption, lifts Consumer's Experience and business continuance.All access nodes AP in virtual subdistrict have following features：Time synchronized between all AP, and with frequency；The public reference signal of all AP is identical, and broadcasted content is mutually equal；UE is mobile between difference AP inside virtual subdistrict to keep chain of command, switches user plane.Virtual subdistrict is divided into centralized and distributed two kinds of scenes：Centralized control node can be defined for centralized, the chain of command of all AP is uniformly processed, for distributed, chain of command is respectively on respective AP, mutually coordinated between different AP.
Due in UDN the characteristics of virtual subdistrict, for the process of the UE Stochastic accessings in virtual subdistrict needs to strengthen and improves.In prior art, all AP in due to virtual subdistrict have identical PCI, so for Idle state UE, AP is transparent, UE will only see virtual subdistrict, and all when UE initiating random access procedures, possible two adjacent AP can receive the Preamble, but an AP is now only needed to, and can only an AP reply accidental access response RAR.So need to make a choice actually which AP replying RAR.
The content of the invention
For the problems referred to above, the present invention proposes the accidental access method in a kind of super-intensive network, including：The Stochastic accessing preamble that access point AP receiving terminals UE of virtual subdistrict send, the preamble indexes, Physical Random Access Channel PRACH indexes and preamble receiving powers are sent to the centralized control node of the virtual subdistrict or other AP of the virtual subdistrict, consult to determine by which AP to reply accidental access response RAR by the AP of the centralized control node or the virtual subdistrict.
Further, determine by which AP to reply RAR by the centralized control node in centralized network, specifically include：For the message with identical preamble indexes and PRACH indexes, the centralized control node selects to reply RAR by the maximum AP of preamble receiving powers.
Further, the centralized control node also distributes interim C-RNTI for the UE.
Which further, in distributed network, consult to determine by AP to reply RAR by the AP of the virtual subdistrict.
Further, the AP of the preamble for receiving terminal UE transmission also preengages the interim C-RNTI of distribution.
Further, the AP negotiation determinations by the virtual subdistrict are replied RAR by which AP and are included：The AP of the preamble for receiving terminal UE transmission, if not receiving other AP within a certain period of time with regard to the preamble indexes and the reception message of PRACH indexes, and have received distribution confirmations of other AP with regard to the interim C-RNTI, then RAR is replied to the UE.
Further, the AP negotiation determinations by the virtual subdistrict are replied RAR by which AP and are included：The AP of the preamble for receiving terminal UE transmission, if have received other AP within a certain period of time with regard to the preamble indexes and the reception message of PRACH indexes, but its preamble receiving power is less than the preamble receiving powers of this AP, and have received distribution confirmations of other AP with regard to the interim C-RNTI, then RAR is replied to the UE.
Further, the AP negotiation determinations by the virtual subdistrict are replied RAR by which AP and are included：The AP of the preamble for receiving terminal UE transmission, if the distribution for not receiving other AP with regard to the interim C-RNTI confirms, abandons replying RAR to the UE.
Further, the AP negotiation determinations by the virtual subdistrict are replied RAR by which AP and are included：The AP of the preamble for receiving terminal UE transmission, if have received other AP within a certain period of time with regard to the preamble indexes and the reception message of PRACH indexes, and its preamble receiving power is more than the preamble receiving powers of this AP, then abandon replying RAR to the UE.
Further, also include：For the message with identical preamble indexes and PRACH indexes, the AP of the virtual subdistrict selects the wherein maximum AP of preamble receiving powers, the distribution for replying interim C-RNTI to confirm.
During the present invention enables the virtual subdistrict of UDN, UE Stochastic accessings are normally carried out, and select optimum AP to process the random access procedure of the UE.
Description of the drawings
Fig. 1 is the random access procedure flow process that the embodiment of the present invention 1 is proposed；
Fig. 2 is the random access procedure flow process that the embodiment of the present invention 2 is proposed.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, in the case where not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.
One embodiment of the present of invention proposes the accidental access method in a kind of super-intensive network, including：The Stochastic accessing preamble that access point AP receiving terminals UE of virtual subdistrict send, the preamble indexes, Physical Random Access Channel PRACH indexes and preamble receiving powers are sent to the centralized control node of the virtual subdistrict or other AP of the virtual subdistrict, consult to determine by which AP to reply accidental access response RAR by the AP of the centralized control node or the virtual subdistrict.
In one alternate embodiment, determine by which AP to reply RAR by the centralized control node in centralized network, specifically include：For the message with identical preamble indexes and PRACH indexes, the centralized control node selects to reply RAR by the maximum AP of preamble receiving powers.
In one alternate embodiment, centralized control node also distributes interim C-RNTI for the UE.
Which in one alternate embodiment, consult to determine by AP to reply RAR by the AP of the virtual subdistrict in distributed network.
In one alternate embodiment, the AP for receiving the preamble of terminal UE transmission also preengages the interim C-RNTI of distribution.
In one alternate embodiment, consulting to determine by the AP of the virtual subdistrict is included replying RAR by which AP：The AP of the preamble for receiving terminal UE transmission, if not receiving other AP within a certain period of time with regard to the preamble indexes and the reception message of PRACH indexes, and have received distribution confirmations of other AP with regard to the interim C-RNTI, then RAR is replied to the UE.
In one alternate embodiment, consulting to determine by the AP of the virtual subdistrict is included replying RAR by which AP：The AP of the preamble for receiving terminal UE transmission, if have received other AP within a certain period of time with regard to the preamble indexes and the reception message of PRACH indexes, but its preamble receiving power is less than the preamble receiving powers of this AP, and have received distribution confirmations of other AP with regard to the interim C-RNTI, then RAR is replied to the UE.
In one alternate embodiment, consulting to determine by the AP of the virtual subdistrict is included replying RAR by which AP：The AP of the preamble for receiving terminal UE transmission, if the distribution for not receiving other AP with regard to the interim C-RNTI confirms, abandons replying RAR to the UE.
In one alternate embodiment, consulting to determine by the AP of the virtual subdistrict is included replying RAR by which AP：The AP of the preamble for receiving terminal UE transmission, if have received other AP within a certain period of time with regard to the preamble indexes and the reception message of PRACH indexes, and its preamble receiving power is more than the preamble receiving powers of this AP, then abandon replying RAR to the UE.
In one alternate embodiment, also include：For the message with identical preamble indexes and PRACH indexes, the AP of the virtual subdistrict selects the wherein maximum AP of preamble receiving powers, the distribution for replying interim C-RNTI to confirm.
Embodiment 1
In centralized network, all of access point AP is a transparent cell for the UE of idle states, so after UE initiates Stochastic accessing, possible two AP have received preamble, such as UE is in two AP1 and AP2 and covers centre position.RAR is replied by one of AP now, because for two AP, TA is different, while also there is no need two AP replys RAR.Concrete processing procedure refer to Fig. 1.
AP1 and AP2 after preamble is received will receive preamble, PRACH and preamble receiving power and be sent to centralized control node；Centralized control node replys RAR whom to judge：For the message with identical preamble and PRACH, the AP for selecting preamble receiving powers maximum is replied and is sent RAR confirmation message (maximum for AP2 receiving powers in the present embodiment), and also distribute interim C-RNTI replies to AP2 to centralized control node in the lump simultaneously；AP2 receives the RAR of centralized control node and confirms to indicate to be ready for sending RAR to UE with after interim C-RNTI.
Embodiment 2
In distributed network, AP1 and AP2 receives the Preamble of UE transmissions, starts timer, waits other nodes with regard to the reception message of preamble, the PRACH；The preamble for receiving and PRACH, preamble receiving power are notified into other AP of virtual subdistrict, and preengages the interim C-RNTI of distribution；
Other nodes APn receive AP1 and AP2 with regard to the Preamble indexes and the reception message of PRACH indexes；Compare the preamble receiving powers of the two, the big node AP1 of preamble receiving powers confirms the distribution of interim C-RNTI thereto；
If AP1 and AP2 timer expiries do not receive other nodes with regard to the Preamble indexes and the reception message of PRACH indexes；Or other nodes are received before timer expiry with regard to the Preamble indexes and the reception message of PRACH indexes, but the preamble receiving powers of preamble received power ratios this nodes are little；And the distribution that have received other nodes with regard to interim C-RNTI confirms, then send RAR；Otherwise abandon replying RAR.
The AP2 that AP1 is received before timer expiry with regard to the preamble indexes, PRACH index messages, but the preamble receiving powers of preamble received power ratios AP1 of AP2 are little, and AP1 have received the distribution of the interim C-RNTI that AP2 and APn sends and confirm message, then AP1 sends RAR to UE.The preamble receiving powers of preamble received power ratios AP2 with regard to the preamble indexes, PRACH index messages, but AP1 of the AP1 that AP2 is received before timer expiry are big, then AP2 abandons sending RAR to UE, and the distribution of interim C-RNTI is confirmed to AP1.In the present embodiment, AP1, AP2 and the APn in virtual subdistrict determines the random access procedure that the UE is processed by relatively optimum AP1 through said process joint consultation.
One of ordinary skill in the art will appreciate that：Realize that all or part of step of said method embodiment can be completed by the related hardware of programmed instruction, aforesaid program can be stored in a computer read/write memory medium, and the program upon execution, performs the step of including said method embodiment；And aforesaid storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.
Finally it should be noted that：Above example only to illustrate technical scheme, rather than a limitation；Although being described in detail to the present invention with reference to the foregoing embodiments, it will be understood by those within the art that：Which still can be modified to the technical scheme described in foregoing embodiments, or carry out equivalent to which part technical characteristic；And these modifications or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the accidental access method in a kind of super-intensive network, it is characterised in that include：
The Stochastic accessing preamble that access point AP receiving terminals UE of virtual subdistrict send, will be described
Preamble indexes, Physical Random Access Channel PRACH indexes and preamble receiving powers are sent to institute
The centralized control node of virtual subdistrict or other AP of the virtual subdistrict are stated, by the centralized control node
Or the AP of the virtual subdistrict consults to determine by which AP to reply accidental access response RAR.
2. method according to claim 1, it is characterised in that by the collection in centralized network
Which AP is middle control nodes determine by reply RAR, specifically include：
For the message with identical preamble indexes and PRACH indexes, the centralized control node choosing
Select and RAR is replied by the maximum AP of preamble receiving powers.
3. method according to claim 2, it is characterised in that the centralized control node is also institute
State UE and distribute interim C-RNTI.
4. method according to claim 1, it is characterised in that in distributed network, by described
The AP of virtual subdistrict consults to determine by which AP to reply RAR.
5. method according to claim 4, it is characterised in that described to receive terminal UE transmission
The AP of preamble also preengages the interim C-RNTI of distribution.
6. method according to claim 5, it is characterised in that the AP by the virtual subdistrict
Negotiation determination replys RAR by which AP to be included：
The AP of the preamble for receiving terminal UE transmission, if not receiving other within a certain period of time
AP is with regard to the preamble indexes and the reception message of PRACH indexes, and have received other AP passes
Confirm in the distribution of the interim C-RNTI, then RAR is replied to the UE.
7. method according to claim 5, it is characterised in that the AP by the virtual subdistrict
Negotiation determination replys RAR by which AP to be included：
The AP of the preamble for receiving terminal UE transmission, if having received other within a certain period of time
AP is with regard to the preamble indexes and the reception message of PRACH indexes, but its preamble receives work(
Preamble receiving power of the rate less than this AP, and other AP are have received with regard to the interim C-RNTI
Distribution confirm, then reply RAR give the UE.
8. method according to claim 5, it is characterised in that the AP by the virtual subdistrict
Negotiation determination replys RAR by which AP to be included：
The AP of the preamble for receiving terminal UE transmission, if not receiving other AP with regard to described
The distribution confirmation of interim C-RNTI, then abandon replying RAR to the UE.
9. method according to claim 5, it is characterised in that the AP by the virtual subdistrict
Negotiation determination replys RAR by which AP to be included：
The AP of the preamble for receiving terminal UE transmission, if having received other within a certain period of time
AP is with regard to the preamble indexes and the reception message of PRACH indexes, and its preamble receives work(
Preamble receiving power of the rate more than this AP, then abandon replying RAR to the UE.
10. method according to claim 5, it is characterised in that also include：
For the message with identical preamble indexes and PRACH indexes, the AP of the virtual subdistrict
The wherein maximum AP of preamble receiving powers, the distribution for replying interim C-RNTI is selected to confirm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510590717.0A CN106550433A (en) | 2015-09-16 | 2015-09-16 | A kind of accidental access method in super-intensive network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510590717.0A CN106550433A (en) | 2015-09-16 | 2015-09-16 | A kind of accidental access method in super-intensive network |
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| CN106550433A true CN106550433A (en) | 2017-03-29 |
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| CN201510590717.0A Withdrawn CN106550433A (en) | 2015-09-16 | 2015-09-16 | A kind of accidental access method in super-intensive network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019061368A1 (en) * | 2017-09-29 | 2019-04-04 | 华为技术有限公司 | Communication method and device |
| CN116171636A (en) * | 2020-12-18 | 2023-05-26 | Oppo广东移动通信有限公司 | Random access response processing method, network equipment and terminal equipment |
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| CN104584604A (en) * | 2012-08-29 | 2015-04-29 | 株式会社Ntt都科摩 | Mobile communications method, wireless base station, and mobile station |
| CN104604300A (en) * | 2012-07-09 | 2015-05-06 | 诺基亚通信公司 | Millimeter wave access architecture with cluster of access points |
| CN104854949A (en) * | 2012-09-26 | 2015-08-19 | 华为技术有限公司 | System and method for random access in heterogeneous communications systems |
| CN104885550A (en) * | 2013-07-19 | 2015-09-02 | Lg电子株式会社 | Method and apparatus for performing random access procedure in wireless communication system |
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2015
- 2015-09-16 CN CN201510590717.0A patent/CN106550433A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104604300A (en) * | 2012-07-09 | 2015-05-06 | 诺基亚通信公司 | Millimeter wave access architecture with cluster of access points |
| CN104584604A (en) * | 2012-08-29 | 2015-04-29 | 株式会社Ntt都科摩 | Mobile communications method, wireless base station, and mobile station |
| CN104854949A (en) * | 2012-09-26 | 2015-08-19 | 华为技术有限公司 | System and method for random access in heterogeneous communications systems |
| CN104885550A (en) * | 2013-07-19 | 2015-09-02 | Lg电子株式会社 | Method and apparatus for performing random access procedure in wireless communication system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019061368A1 (en) * | 2017-09-29 | 2019-04-04 | 华为技术有限公司 | Communication method and device |
| CN116171636A (en) * | 2020-12-18 | 2023-05-26 | Oppo广东移动通信有限公司 | Random access response processing method, network equipment and terminal equipment |
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Application publication date: 20170329 |