CN1228232A - Procedure to improve capacity of V5 interface in wireless local loop environment - Google Patents
Procedure to improve capacity of V5 interface in wireless local loop environment Download PDFInfo
- Publication number
- CN1228232A CN1228232A CN 97197292 CN97197292A CN1228232A CN 1228232 A CN1228232 A CN 1228232A CN 97197292 CN97197292 CN 97197292 CN 97197292 A CN97197292 A CN 97197292A CN 1228232 A CN1228232 A CN 1228232A
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- China
- Prior art keywords
- terminal installation
- interface
- telephone exchange
- status data
- access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/14—WLL [Wireless Local Loop]; RLL [Radio Local Loop]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Communication Control (AREA)
Abstract
The present invention relates to a procedure for maximizing the available capacity of a V5 interface (1) in a wireless local loop environment, in which a terminal device (5) is connected via a radio link to a base station (4a, 4b, 4c) and further to an access node (2) and a telephone exchange (3). The procedure of the invention allows considerably more effective reservation and use of the time slots of the V5 interface than before because it achieves a significant reduction of abortive reservations of time slots.
Description
The present invention relates to be used for make the active volume of a V5 interface reach maximum method, in this wireless local loop environment, a terminal installation is connected to a base station and further is connected to an access node and a telephone exchange by a radio link at a wireless local loop (loop) environment.
In a wireless local loop (WLL), a terminal installation is connected to an access node by a radio link.A base station is arranged between terminal installation and access node, further be sent to public telephone network or be reversed transmission from all call signals that terminal installation receives by radio communication by access node by this base station.With V5.1 or V5.2 agreement access node is connected to telephone exchange.
Described in all ETSI of all ETS 300 324 and ETS 300 347 series (EuropeanTelecommunications and Standards Institute, european telecommunication and ANSI) standard all open interfaces (V5.1 and V5.2) between an access node and telephone exchange.All V5 interfaces can make all belong to one physically independent can be that all users of the local loop of a wired or wireless network are connected with the standard interface of a telephone exchange.Form by one or more (1-16) PCM (Pulse Code Modulation, pulse code modulation) cable with all standard ETS 300 347-1 dynamic concentrator interface V5.2 consistent for one with 347-2.Article one, the PCM cable comprises 32 channels altogether, and each bar in these channels all has a 64kbit/s, i.e. the transfer rate of 2048kbit/s altogether.The support of V5.2 interface is as being used in all analog telephones in the public telephone network, as ISDN (Integrated Services DigitalNetwork, the digital subscriber of all fundamental sum system users integrated services digital network), and based on all other analog or digital terminal equipments of all semifixed connections.
In the system of technology, telephone exchange has no idea to determine whether terminal installation can insert before one.In order to set up a calling of leading to a terminal installation, the call control system of telephone exchange keeps a time slot and gives access node with this call notification in the V5 interface.Access node keeps all resources till the radio net control system announces that terminal installation can not insert for this calling.On the basis of this announcement, access node discharges all resources that it has kept and unsuccessful call setup is notified to telephone exchange, and telephone exchange discharges the time slot of the V5 interface that is retained on this basis, makes it can be used for all other users.
The problem of said method be when all call signals when telephone exchange is sent to a terminal installation of cutting out by a concentrated access node, this relates to the unnecessary reservation of local loop capacity.Particularly in the V5 interface between telephone exchange and access node, this call setup does not have the destination to occupy a time slot or a plurality of time slot because only in access node, just can obtain about terminal installation can not access property information.
The objective of the invention is to eliminate above-mentioned problem.A special purpose of the present invention is to produce a kind of method that allows the active volume of a V5 interface of more efficient use.
About characterizing all characteristics of the present invention, see also claims of the application.
In the method for the invention, for the active volume that makes a V5 interface in a wireless local loop environment reaches maximum, to be in all time slots of all calling reservation V5 interfaces from the telephone exchange to the terminal installation at least.Available capacity is the heap(ed) capacity of V5 interface, this means the time slot of certain quantity.Local loop environment comprises that one is connected to the access node of a telephone exchange by a V5 interface, and one and access node communicated and be used for transmitting all call signals between access node and terminal installation a base station.
In the method for the invention, the accessibility to terminal installation in telephone exchange monitors, and a calling of leading to a terminal installation that can not insert can not be set up.This makes in a verified terminal installation cuts out and can not receive the situation of all callings avoids the useless reservation of all time slots to become possibility.In the time all callings can being sent to a terminal installation, this terminal installation can insert.Supervision is to carry out on the status data with access interface is sent to the basis of telephone exchange, is retained in these data in the access node and points out to be connected to the accessibility of the terminal installation of access interface.Preferentially with in the identical time that the status data of access side mouth upgrades in access node, the status data of access side mouth upgrades in telephone exchange.According to all V5 suggestions, implement the maintenance and the renewal of the status data of access side mouth with control protocol.The state of access interface can or " operation " or " locking ", that can insert maybe can not insert.Further, when the radio link between base station and terminal installation is cut off, promptly when terminal installation when being outside or when because all other reason radio links are when being cut off at the coverage area of base station, preferentially the status data of access interface is updated to locking state.So call control system can discharge the time slot that may be keeps for terminal installation immediately, if promptly when radio link is cut off terminal installation carrying out one and effectively calling out, then may be keep this time slot for energy device eventually.
In preferential embodiment, add that by all IMSI that carry out by terminal installation (attach) and IMSI cancel (IMSI, International Mobile Subscriber Identify, the international mobile subscriber identifier) function, transmit the information relevant, for example in all standards of all ETS 300 530 series, described these functions with the accessibility of terminal installation.When energized in terminal installation, begin IMSI and added function, this is in fact corresponding with the process that the terminal installation position of a standard is upgraded.The indicating terminal device is that the data of operation usually are stored in the access node with binary form.Cancel function when when terminal installation is cut off the electricity supply, implementing IMSI.In this case, corresponding status data also is stored in the access node.In access node, the state of terminal installation is indicated by the status data of access interface.
When with before technology relatively the time, the present invention has such advantage, promptly it makes the load of minimizing on local call switch and the access node all call control resources in the two become possibility.Further, the invention enables all unnecessary reservation of all time slots of avoiding the V5 interface, become possibility thereby make more time slot can be used for all other callings that will be transmitted.A further advantage of the present invention is can enough all IMSI to add and cancel function better the status data of a terminal installation to be monitored.
Below, under the help of a preferential embodiment,, a wireless local loop environment is described according to this embodiment of the invention by the present invention being described in detail with reference to appended figure.
The wireless local loop system of representing among the figure comprises an access node 2.Access node 2 plays a lumped elements between a telephone exchange 3 and terminal installation 5, connects the user to telephone exchange 3.Access node 2 comprises that by one the V5.2 interface 1 of 1-16 bar PCM cable (2Mbit/s) and the exchange termination (ET) (not drawing among the figure) of telephone exchange 3 are connected, all functions that end exchange has the V5 interface to need.Yet, comprise many base station 4a by the system of figure expression, 4b and 4c, each in these base stations all has a given coverage area.In system by the figure expression, in order between a terminal installation and telephone exchange, to set up a connection, between base station 4a and terminal installation 5, transmit all signals by radio communication, and further all signals are sent to access node 2 and are sent to telephone exchange by V5 interface 1 from access node from the base station by all wired connections.
With further reference to this figure, when terminal installation 5 energized, implement one and add function with the above-mentioned consistent IMSI of all recommendations.By this effect, it is in running status terminal installation 5 informing networks, so all callings of leading to terminal installation can be sent to terminal installation.At access node 2, be used for status data value of being updated to " operation " with terminal installation 5 corresponding access interface.Same the time, in telephone exchange 3, with the control protocol of V5 interface 1, by updating stored in the user data for the V5 interface that is used by access interface in the telephone exchange, the status data of access interface also is updated.
When the power supply that cuts off from the terminal installation 5 of an operation, terminal installation is carried out an IMSI and is cancelled function, and terminal installation is not expected an affirmation from the base station for this reason.By this effect, terminal installation announces that it is not in running status, and in other words, terminal installation can not insert, and this means not call out to be sent to terminal installation.For with the status data of the access interface of terminal installation correspondence value of being updated to " locking " now.Same the time, in telephone exchange 3, with the control protocol of V5 interface, by updating stored in the user data for the V5 interface that is used by access interface in the telephone exchange, the status data of access interface also has been updated.
Further, when setting up one when calling out, at first in telephone exchange by reading status data for the access interface of in question terminal installation, can carry out an inspection whether be in running status so that determine the terminal called device.In this mode, avoided all invalid reservation of all time slots in the V5 interface 1 between access node 2 and telephone exchange.
The embodiment that the invention is not restricted to propose above, and in by the framework of the described creationary thought of claims, can carry out many variations.
Claims (9)
1. be used for making the active volume of a V5 interface (1) reach maximum method at a wireless local loop environment, this wireless local loop environment comprises an access node (2), access node (2) is connected to a telephone exchange (3) and base station (4a by the V5 interface, 4b, 4c), base station (4a, 4b, 4c) be used between access node and terminal installation (5), transmitting all signals, be at least all callings from the telephone exchange to the terminal installation in the method and be retained in a time slot in the V5 interface, be characterised in that the accessibility to terminal installation monitors in telephone exchange; With in telephone exchange, forbid a calling to a terminal installation that can not insert.
2. the method described in claim 1 is characterised in that the status data of access interface of accessibility that indication is connected to the terminal installation (5) of an access interface is sent to telephone exchange (3).
3. the method described in claim 2 is characterised in that when upgrading the status data of access interface in access node (2), and the status data of access interface is sent to telephone exchange (3).
4. as the method described in the claim 1 to 3 any one, it is characterized in that upgrading, the status data of access interface is sent to telephone exchange (3) by the user data that is stored in the telephone exchange to V5 interface (1).
5. as the method described in the claim 1 to 4 any one, be characterised in that
When terminal installation (5) energized, carry out an IMSI by terminal installation (5) and add function;
Add at IMSI on the basis of function that will be updated to " operation " for the status data of the access interface of terminal installation, the indicating terminal device can insert; With
The status data of access interface is sent to telephone exchange (3).
6. as the method described in the claim 1 to 4 any one, be characterised in that
When terminal installation (5) when cutting off the electricity supply, carry out an IMSI by terminal installation (5) and cancel function;
Cancel at IMSI on the basis of function, will be updated to " locking " for the status data of the access interface of terminal installation, the indicating terminal device can not insert; With
The status data of access interface is sent to telephone exchange (3).
7. as the method described in the claim 1 to 6 any one, be characterised in that when the radio link between base station (4) and terminal installation (5) is cut off, the status data of access interface is updated to " locking ".
8. as the method described in the claim 1 to 7 any one, be characterised in that, the status data of access interface is sent to telephone exchange (3) by control protocol.
9. as the method described in the claim 1 to 8 any one, be characterised in that on the basis of the user data of V5 interface the state to terminal installation (5) monitors in telephone exchange.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI963302A FI103370B (en) | 1996-08-23 | 1996-08-23 | Procedure for maximizing the V5 interface's accessible capacity in wireless subscriber network environment |
| FI963302 | 1996-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1228232A true CN1228232A (en) | 1999-09-08 |
Family
ID=8546521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97197292 Pending CN1228232A (en) | 1996-08-23 | 1997-08-12 | Procedure to improve capacity of V5 interface in wireless local loop environment |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1016297A1 (en) |
| JP (1) | JP2001505722A (en) |
| CN (1) | CN1228232A (en) |
| AU (1) | AU723323B2 (en) |
| BR (1) | BR9711636A (en) |
| CA (1) | CA2263580A1 (en) |
| FI (1) | FI103370B (en) |
| WO (1) | WO1998008352A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003077577A1 (en) * | 2002-03-13 | 2003-09-18 | Huawei Technologies Co., Ltd. | Method for monitoring a interface circuit in wireless communication system |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI106688B (en) * | 1997-12-17 | 2001-03-15 | Nokia Networks Oy | A method for implementing state monitoring of an ISDN user port |
| FI981767A (en) * | 1998-08-17 | 2000-02-18 | Nokia Networks Oy | A method and system for maximizing the capacity of a communication system |
| KR100312310B1 (en) * | 1999-03-12 | 2001-11-03 | 윤종용 | Method for managing a plurality of radio links in wireless local loop |
| KR20010061854A (en) * | 1999-12-29 | 2001-07-07 | 박원배 | Apparatus for connecting remote subscriber switch using v5.2 interface module |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8917740D0 (en) * | 1989-08-03 | 1989-09-20 | Orbitel Mobile Communications | Channel assignment and power control arrangement in a radio communication system |
| SE465992B (en) * | 1990-04-10 | 1991-11-25 | Ericsson Telefon Ab L M | MOBILE PHONE SYSTEM PROVIDED TO USE BY SUBSCRIBERS INDOOR AND OUTDOOR |
| US5212831A (en) * | 1990-11-28 | 1993-05-18 | Bell Communications Research, Inc. | Method and apparatus for autonomous adaptive frequency assignment in TDMA portable radio systems |
| FI100077B (en) * | 1995-01-04 | 1997-09-15 | Nokia Telecommunications Oy | Radio system for wireless subscriber connection |
-
1996
- 1996-08-23 FI FI963302A patent/FI103370B/en active IP Right Grant
-
1997
- 1997-08-12 WO PCT/FI1997/000474 patent/WO1998008352A1/en not_active Application Discontinuation
- 1997-08-12 CA CA002263580A patent/CA2263580A1/en not_active Abandoned
- 1997-08-12 CN CN 97197292 patent/CN1228232A/en active Pending
- 1997-08-12 BR BR9711636A patent/BR9711636A/en unknown
- 1997-08-12 AU AU38519/97A patent/AU723323B2/en not_active Ceased
- 1997-08-12 EP EP97935585A patent/EP1016297A1/en not_active Withdrawn
- 1997-08-12 JP JP51044998A patent/JP2001505722A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003077577A1 (en) * | 2002-03-13 | 2003-09-18 | Huawei Technologies Co., Ltd. | Method for monitoring a interface circuit in wireless communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| FI963302A0 (en) | 1996-08-23 |
| FI103370B1 (en) | 1999-06-15 |
| FI103370B (en) | 1999-06-15 |
| JP2001505722A (en) | 2001-04-24 |
| WO1998008352A1 (en) | 1998-02-26 |
| EP1016297A1 (en) | 2000-07-05 |
| BR9711636A (en) | 1999-08-24 |
| AU723323B2 (en) | 2000-08-24 |
| FI963302A (en) | 1998-02-24 |
| CA2263580A1 (en) | 1998-02-26 |
| AU3851997A (en) | 1998-03-06 |
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