CN1237830C - Method for monitoring neighbouring radio cells in a radio communication system - Google Patents
Method for monitoring neighbouring radio cells in a radio communication system Download PDFInfo
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- CN1237830C CN1237830C CNB018186475A CN01818647A CN1237830C CN 1237830 C CN1237830 C CN 1237830C CN B018186475 A CNB018186475 A CN B018186475A CN 01818647 A CN01818647 A CN 01818647A CN 1237830 C CN1237830 C CN 1237830C
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- base station
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- time interval
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- 238000004891 communication Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims description 16
- 230000011664 signaling Effects 0.000 claims description 26
- 230000003044 adaptive effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 57
- 238000005259 measurement Methods 0.000 description 10
- 230000001360 synchronised effect Effects 0.000 description 4
- 101150081027 RNC1 gene Proteins 0.000 description 3
- 101100426111 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) TRM2 gene Proteins 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 244000287680 Garcinia dulcis Species 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
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- 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
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- 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
- H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality
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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
- H04W36/0085—Hand-off measurements
- H04W36/0088—Scheduling hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
According to the invention, at least one parameter of a time interval, for the monitoring of transmissions from a second base station in a second radio communication system, are signalled by a first base station in a first radio communication system to a user station, at least one particular event in the transmissions from the second base station is determined by the user station during the signalled time interval and a matching of at least one of the parameters of the time interval is signalled to the first base station by the user station.
Description
Technical field
The present invention relates to the method for monitoring neighbouring radio plot in the radio communications system.
Background technology
In radio communications system, transmitting and receiving transmission information between the radio station (base station and subscriber station) (for example voice, image information or other data) by radio interface by means of electromagnetic wave.Wherein, utilize the carrier frequency that is in the corresponding system setting frequency band to carry out the electromagnetic wave emission.For the CDMA transmission technology that adopts radio interface or the following mobile radio system of TD/CDMA transmission technology (CDMA code division multiple access, TD/CDMA Time Division-Code Division Multiple Access), for example UMTS (Universal Mobile Telecommunications System) or other third generation system, described frequency is in the frequency band of about 2000MHz.What the RNC (radio resource controller) that has the base station or be subordinated to the base station in known mobile radio system in UMTS asked that one or more subscriber station (UE-user's set) measures may.Important measurement for example is the level measurement of adjacent radio cells or base station, to carry out handover (handover) in the later moment to this sub-district under possible situation.Other application examples of this measurement is located or paging function in this way.Can certainly in the connection that self exists, measure in principle.
In the future have increasing mobile radio system, navigation system and other radio application facility and exist adjacent to each other, and the corresponding function spare of using these systems is also jointly comprehensively in a subscriber station.This has determined that for example a radio system must be measured the parameter of another radio system at least, carries out handover or utilizes the application of other system, for example navigation of carrying out by means of known GPS (global positioning system) with a system backward.
At this moment, such situation may take place: for example because do not have second complete receiver and/or transmitter architecture can be used for another radio system concurrently, perhaps because interference problem, for example by transmit and receive the interference problem that causes simultaneously at same user's set, be implemented in technical cost height or can not realize the described current service that must regulate, interrupt or reconfigure radio system.
Under possible situation, also be necessary for many mutually closely adjacency, for example the subscriber station of a radio plot inside regulated or reconfigured, the interference that causes with minimizing.Reconfigure signaling from the base station to corresponding subscriber station transmission in this case.
The known starting point of prior art based on, send corresponding measurement task to subscriber station, and serve and suspend or have a corresponding configuration of serving.Described configuration for example comprises time, code, frequency, modulation, transmitting power, fixed point or the like.Under possible situation, can also change time slot.Also has the last form that distributes of combination arbitrarily and time.
In above-mentioned UMTS mobile radio system, can use this method.Be embedded in transmission gap from FDD type (Frequency Division Duplexing (FDD)) frame that provides serving base station to send out continuously, promptly so-called slit, wherein the receiver of subscriber station has the possibility of observing one or more neighboring radio system.Described neighboring radio system supports the UMTS mobile radio system of tdd mode, or the radio plot of known GSM mobile radio system or base station.Under possible situation, also can trigger the generation of transmission gap by dispensing device.Producing transmission gap in the continuous data flow is undertaken by so-called compact model.Before transmission gap or behind the transmission gap, transmit with the higher data transfer rate in these data that will in transmission gap, send originally.To improve the error rate unfriendly in order not causing, can and to improve transmitting power by the short time and carry out by the change spread spectrum coefficient.Yet because raising transmitting power compact model also can increase the interference in the corresponding radio sub-district unfriendly, this causes reducing the capacity of system.
In transmission gap subscriber station attempt with the frame structure of neighboring radio system synchronous because usually adjacent base station not with current responsible system synchronization.For example this is the time slot of carrying broadcast channel or synchronizing channel for this reason.Described broadcast channel for example is carrying so-called BCCH (Broadcast Control Channel) in the GSM mobile radio system and is the P-CCPCH (elementary Common Control Physical Channel) of carrying BCH (Broadcast Control Channel) in the tdd mode of UMTS mobile radio system.After subscriber station is determined described channel, usually analyze the content of described channel by a plurality of time frames.
Because remain the temporal position of observed events, the temporal position of BCCH or BCH for example just, usually be not known to the current responsible radio system, so propose following scheme: on the one hand, propose to use bigger transmission gap or the pattern of forming by a plurality of short transmission gaps (pattern).Yet this but cause unfriendly reducing current support service rate of data signalling or increase the weight of interference effect.Propose on the other hand, at first determine short transmission gap.If can not detect this incident at the subscriber station described in this time interval, the time of just then determining is gone up another transmission gap of other location, or the like.Its shortcoming is, finds the process of incident to experience very longly sometimes, and the cost of averaging of described measured value may be high.
Summary of the invention
Task of the present invention is to point out a kind of method, makes to locate and to utilize transmission gap effectively.Described task is finished in the method for radio communications system monitoring neighbouring radio plot by being used for.In the method, send at least one starting point signaling in the time interval of the emission of second base station that is used to observe second radio communications system to subscriber station from first base station of first radio communications system, in the time interval of institute's signaling, measure the time location of a channel of second base station by subscriber station, obtain the new starting point in the time interval of channel reception subsequently according to the time location of the described channel of being obtained by described subscriber station, and to first base station transmission signaling, and first base station is according to the described time interval of the adaptive adjustment of this signaling.
Send at least one parameter signalling in the time interval of the emission of second base station that is used to observe second radio communications system to subscriber station from first base station of first radio communications system according to the present invention, in the time interval of signaling, measure the definite incident in the emission of at least one second base station by subscriber station, and send the signaling of at least one parameter in the adaptive described time interval of adjustment by described subscriber station to first base station.
First expansion according to the present invention sends as the moment in the described time interval of parameter and/or the signaling of length.Described parameter signalling both can have been sent by the base station and also can have been sent by subscriber station.At this,, can determine by specifying certain time slot as the moment of an enforcement.
According to another expansion of the present invention, in a parts relative users station signaling parameter described time interval of adaptive adjustment by first radio communications system, wherein, send the signaling of described altered time interval parameter again to subscriber station.By central unit, promptly RNC (radio network controller) regulates the parameter in the described time interval in above-mentioned UMTS mobile radio system.
Description of drawings
Below by means of the description of drawings embodiments of the invention.In the accompanying drawing:
The block diagram of two neighboring radio communication systems of Fig. 1,
Determining of the time interval of the monitoring neighbouring radio communications system of an example of Fig. 2, and
The flow chart of Fig. 3 the method for the invention.
Embodiment
The example components of two neighboring radio communication systems shown in Fig. 1.Support the first base station NB1 (Node B) of the fdd mode of UMTS mobile radio system to be connected with moving exchanging center MSC by radio network controller RNC1.Support that for example the second base station NB2 of the tdd mode of UMTS mobile radio system directly is connected with other parts of this mobile radio system at the network based on the internet.Described base station NB1 and NB2 respectively provide the radio plot Z1 and the Z2 that have radio technical resources.
A subscriber station UE (user's set) for example is in the overlapping region of radio plot Z1, Z2 of two base station NB1 and NB2 and currently is connected with the first base station NB1.Control ground termly or by certain incident, the subscriber station UE observation for example broadcast channel BCH of the second base station NB2 is launched and is analyzed.Depend on that this analysis starts for example from the handover of the first base station NB1 to the second base station NB2 in subscriber station UE and the first base station NB1 or radio network controller RNC1.
In the fdd mode of first radio communications system, transmit and carry out continuously, wherein, by frequency be connected independent spreading code (CDMA sign indicating number) and determine the transmission channel of physics.Should receive of the emission of second base station if generally only be provided with the subscriber station UE of a receiving system, just must interrupt the first base station NB1 along of the continuous transmission of down link direction in certain time interval to this subscriber station UE with another frequency.Such transmission gap for example produces by so-called compress mode, in other words, to transmit with the higher data transfer rate before this transmission gap or after this transmission gap in the data of this transmission gap transmission, must change spread spectrum coefficient for this reason and improve transmitting power.At this transmission gap, this subscriber station be tuned to the frequency of the second base station NB2, and attempt to detect and follow the channel of analyzing on the time structure that helps to be synchronized to second radio communications system, for example broadcast channel BCH or synchronous channel SCH.
For the corresponding time frame FR of the method for the present invention first base station NB1 shown in Figure 2 and the second base station NB2 is described, state as preceding, the first base station NB1 supports to press the fdd mode transmission of UMTS mobile radio system.Transmission described herein is continuously with transmitting by user specific spreading code and the definite used physical transmission channel of frequency.Described transmission channel is subdivided into the time frame that 15 time slot S are respectively arranged.On the contrary, the second base station NB2 supports to press the transmission of the tdd mode of UMTS mobile radio system.Here frame structure is corresponding to fdd mode the time, and just, each time frame FR is subdivided into 15 time slots, but does not transmit continuously, but the transmission channel of physics is determined by frequency, time slot S and a spreading code.In addition, all carry out to the transmission of subscriber station UE to the base station or along the down link direction along uplink direction no matter be at a common frequency band.Asynchronous mutually in these two systems.This represents by the time warping that corresponding time frame FR begins in Fig. 2.
In order to determine transmission gap, send the beginning in gap and the signaling of length to subscriber station UE from the current first base station NB1 of service that provides.Determine by the signaling of timeslot number TGSN (transmission gap start timeslot number) in this beginning corresponding to the time interval of transmission gap.In example shown in Figure 2, TGSN=9 points out by the indication sentence: subscriber station UE provides transmission gap from time slot S9.The length of transmission gap is determined by another signaling of time slot TGL sum (transmission gap length).In the example of Fig. 2, send the signaling that transmission gap is established 11 time slots to subscriber station UE by indication sentence TGL=11.
The beginning of transmission gap and finish before subscriber station UE its receiver be tuned to the frequency of the second base station NB2 or the frequency of the second base station NB1, to be received in the emission on the corresponding frequencies.Owing to thisly tuningly correspondingly need the regular hour, and the time frame structure of the first base station NB1 is asynchronous with the time frame structure of the second base station NB2, subscriber station UE for example provides the Measuring Time of eight time slots for the second base station NB2 in this time frame.
According to the example of Fig. 1, subscriber station UE attempts to detect broadcast channel BCH or the synchronous channel SCH among the P-CCPCH now, with to the time frame structure carry out synchronously and measure and analyze wherein contained information.After detecting the first time of channel, require a plurality of transmission gaps in succession to measure accordingly and analyze at large, therefore, preferably should limit the sum and the length of transmission gap.
Flowchart text the method for the invention below with reference to Fig. 3 solves described difficulty.Network UTRAN (UMTS radio access network) by the first base station NB1 and RNC1 corresponding to Fig. 1 form at first step 1, sends the signaling of compress mode configuration, just the beginning TGSN of transmission gap and length T GL as previously mentioned to subscriber station UE.Can so that distributing rationally of transmission gap can be determined in described base station, especially can determine desirable target and radio channel from measuring period in other words measurement duration that the first base station NB1 at first selects certain-length at this.Subscriber station UE observes the emission of the second base station NB2 and the broadcast channel BCH among test example such as the P-CCPCH at transmission gap in second step 2.Subscriber station UE knows now, if follow-up transmission gap occurs in the later moment and/or with the length that shortens, it also can receive broadcast channel BCH so.Therefore send the signaling of the beginning of the type of adjacent system of detection and/or suitable transmission gap to the first base station NB1 at third step 3 subscriber station UE, described adjacent system type corresponding to aforesaid be the tdd mode of UMTS mobile radio system, the beginning of transmission gap for example by the explanation time slot provide.In the 4th step 4, described signaling, replenish ground under the situation that may exist, and have and the understanding of the first base station NB1 about system based on the time frame structure of the transmission equal length of FDD or several times length based on TDD, utilize network UTRAN to optimize the parameter of transmission gap fully, here BCH therefore keep with the first base station NB1 the time frame structure pro rata on identical relative position.Then in step 5, send the parameter signalling optimized and use the BCH that this optimum parameters then further detects the second base station NB2 at step 6 subscriber station UE to subscriber station UE.Corresponding to example shown in Figure 2, described new argument for example is TGSN=14 and TGL=5.The configuration of the optimization of transmission gap can be used for a plurality of follow-up transmission gaps, also it is contemplated that the optimizing process that all carries out corresponding said method behind each transmission gap.
Measurement has the time interval of the 3rd base station NB2 of different transmission structures to be determined by changing the existing configuration that station data is connected by the first base station NB1.Wherein for example want the adaptive adjustment moment, time mode, frequency, spreading code, modulation and transmitting power.At this, described adaptive adjustment can only be carried out corresponding subscriber station, also can carry out a plurality of subscriber stations.
Say that additionally it is important use that the observation of GSM and TDD confirms the UMTS fdd mode.Because do not have synchronism between two kinds of different systems, the base station is difficult to the moment of specified measurement.Certainly some systems (for example, FDD, TDD, TD-SCDMA) have and keep for a long time the fully constant constantly identical frame length of the measurement of a time system or the frame length of several times.Thereby subscriber station can measured the complete time frame of another system or another radio system first, thereby know after the length of measurement target (for example radio channel), minimum transmission gap is set by asking desirable measurement beginning and length.
Claims (3)
1. be used for method at radio communications system monitoring neighbouring radio plot, wherein,
Send at least one starting point (TGSN) signaling in the time interval of the emission of second base station (NB2) that is used to observe second radio communications system to subscriber station (UE) from first base station (NB1) of first radio communications system,
By subscriber station (UE) in the time interval of institute's signaling, measure second base station (NB2) a channel (P-CCPCH, time location BCH),
By described subscriber station (UE) according to the described channel of being obtained (P-CCPCH, time location BCH) obtain subsequently channel (P-CCPCH, BCH) the new starting point in the time interval of Jie Shouing, and send signaling to first base station (NB1), and
First base station (NB1) is according to the described time interval of the adaptive adjustment of this signaling.
2. the method for claim 1, wherein
Additionally send the signaling of described time interval length (TGL) to subscriber station (UE) from first base station (NB1).
3. method as claimed in claim 2 wherein, is designated as starting point (TGSN) with a time slot of the time frame (FR) of first base station (NB1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10055638.8 | 2000-11-10 | ||
| DE10055638 | 2000-11-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1488228A CN1488228A (en) | 2004-04-07 |
| CN1237830C true CN1237830C (en) | 2006-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018186475A Expired - Fee Related CN1237830C (en) | 2000-11-10 | 2001-11-12 | Method for monitoring neighbouring radio cells in a radio communication system |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1334632A2 (en) |
| CN (1) | CN1237830C (en) |
| AU (1) | AU2002221559A1 (en) |
| WO (1) | WO2002039758A2 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60319503T2 (en) * | 2003-04-11 | 2009-05-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for synchronization in a mobile radio terminal |
| EP1467584A1 (en) * | 2003-04-11 | 2004-10-13 | Telefonaktiebolaget LM Ericsson (publ) | Method and apparatus for wireless intersystem handover |
| DE102004004092B3 (en) | 2004-01-27 | 2005-05-25 | Siemens Ag | Mobile terminal, especially mobile radio, for cellular mobile radio system suspends receiving packet-oriented broadcast signals during signaled time slice to receive radio call signals signaling telephone calls addressed to terminal |
| US20060040656A1 (en) * | 2004-08-17 | 2006-02-23 | Kotzin Michael D | Mechanism for hand off using access point detection of synchronized subscriber beacon transmissions |
| US7702343B2 (en) | 2005-04-04 | 2010-04-20 | Qualcomm Incorporated | Efficient gap allocation for cell measurements in asynchronous communication networks |
| CN100421516C (en) | 2005-06-24 | 2008-09-24 | 华为技术有限公司 | Measure time confirming method based on different-frequency measure and different-frequency measuring method |
| US8068835B2 (en) * | 2005-10-27 | 2011-11-29 | Qualcomm Incorporated | Tune-away and cross paging systems and methods |
| US8134977B2 (en) * | 2005-10-27 | 2012-03-13 | Qualcomm Incorporated | Tune-away protocols for wireless systems |
| US9247467B2 (en) | 2005-10-27 | 2016-01-26 | Qualcomm Incorporated | Resource allocation during tune-away |
| DE602006017970D1 (en) | 2006-04-28 | 2010-12-16 | Research In Motion Ltd | Burst data communication techniques for mobile communication devices operating in packet data sessions |
| KR101090542B1 (en) * | 2007-04-26 | 2011-12-08 | 인터디지탈 테크날러지 코포레이션 | Method and apparatus of measurement mechanism and efficient paging and broadcasting scheme implementation in mbms dedicated cell of lte systems |
| WO2008151549A1 (en) * | 2007-06-07 | 2008-12-18 | Huawei Technologies Co., Ltd. | Method, network equipment and device for measuring the signals from neighbor cells and measuring the time length indicated by the gap required by the neighbor cells |
| US20080318577A1 (en) * | 2007-06-25 | 2008-12-25 | Interdigital Technology Corporation | Method and apparatus for supporting inter-frequency and inter-radio access technology handover |
| JP2011514782A (en) * | 2008-03-07 | 2011-05-06 | ノーテル・ネットワークス・リミテッド | Method in radio access terminal, radio access terminal and radio communication system |
| CN102647730B (en) * | 2011-02-18 | 2014-12-24 | 华为技术有限公司 | Sending and receiving method of neighboring zone information, mobile terminal and base station |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2297460B (en) * | 1995-01-28 | 1999-05-26 | Motorola Ltd | Communications system and a method therefor |
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2001
- 2001-11-12 EP EP01994037A patent/EP1334632A2/en not_active Ceased
- 2001-11-12 AU AU2002221559A patent/AU2002221559A1/en not_active Abandoned
- 2001-11-12 WO PCT/DE2001/004240 patent/WO2002039758A2/en not_active Application Discontinuation
- 2001-11-12 CN CNB018186475A patent/CN1237830C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| AU2002221559A1 (en) | 2002-05-21 |
| CN1488228A (en) | 2004-04-07 |
| WO2002039758A2 (en) | 2002-05-16 |
| EP1334632A2 (en) | 2003-08-13 |
| WO2002039758A3 (en) | 2002-08-15 |
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