CN102340836A - New measurement event in switching - Google Patents
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- CN102340836A CN102340836A CN2010102331176A CN201010233117A CN102340836A CN 102340836 A CN102340836 A CN 102340836A CN 2010102331176 A CN2010102331176 A CN 2010102331176A CN 201010233117 A CN201010233117 A CN 201010233117A CN 102340836 A CN102340836 A CN 102340836A
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Abstract
The invention relates to a new measurement event in switching, in particular to a wireless network controller, user equipment and a method in a time division synchronous code division multi-access communication network. The method comprises the steps that: the connection quality of a main public control physical channel about a service community is measured; and the occurrence of a first event is responded, a measurement result is sent to the wireless network controller, wherein, the first event is defined as that the measurement result is lower than a preset threshold.
Description
Technical field
The present invention relates generally to the switching in the communication network.The present invention relates more specifically to method, subscriber equipment (UE), the radio network controller (RNC) of the switching of Event triggered.
Background technology
Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) standard is adopted from Rel-4 by 3GPP, is called " UTRA TDD 1.28Mcps option ".Use FDD (FDD) scheme different with WCDMA (W-CDMA), TD-SCDMA uses time division duplex (TDD).Through dynamically regulating the number of timeslots that down link and up link are used, system can more easily hold the non-symmetrical service with different pieces of information rate requirement than FDD scheme on down link and up link.Because it does not require that paired frequency spectrum is used for down link and up link, therefore also increased the flexibility of spectrum allocation may.In addition, use identical carrier frequency to mean that channel conditions is identical on twocouese to up link and down link, downlink channel information can be released according to uplink channel estimation in the base station, and this helps The Application of Technology such as wave beam formation.
As the communication standard of new development, TD-SCDMA is being deployed in Chinese most area.But, TD-SCDMA user may find in some position, and the quality of connection of TD-SCDMA sub-district is not as good such as the sub-district of such other wireless access technologys (RAT) of global mobile system (GSM) or WCDMA.In this case, if user's subscriber equipment (UE) supports all that to these two kinds of standards the user possibly hope to trigger the switching from the TD-SCDMA sub-district to another RAT sub-district.
In the TD-SCDMA system, the quality of connection of current area is one of triggering direct-cut operation or the input from TD-SCDMA to another RAT switching at present.Have only when the quality of connection of current area is lower than threshold value and just can trigger switching.In down link, send Primary Common Control Physical Channel (P-CCPCH) with constant transmit power, this is the beacon channel in the TD-SCDMA system.Typically, when UE moves away from the antenna of sub-district, the path loss between UE and wireless base station (RBS) or the Node B antenna will increase, thereby P-CCPCH received signal code power (RSCP) will reduce.The measurement of the P-CCPCH RSCP of the quality of connection of indication current area can trigger switching.At current standard 3GPP TS25.331: in " RRC Protocol Specification V 7.9.1 ", use measurement based on incident.This means to have only when measurement reaches certain standard, measurement result just can be sent to RNC from UE and switch to trigger.
But, only defined the incident that be used for inter-frequency measurements in the TD-SCDMA standard of mentioning in the above.That is to say to have only as UE to be operated in subcarrier (frequency) last time, could utilize quality of connection to measure.
Summary of the invention
The problem of pointing out above an object of the present invention is to solve.
According to an aspect of the present invention; A kind of method of subscriber equipment of the Serving cell at the radio network controller (RNC) that is arranged in TD SDMA TD-SCDMA communication network is provided; Said subscriber equipment is operated on the main carrier, and said method comprises: measure the quality of connection about the Primary Common Control Physical Channel P-CCPCH of Serving cell; With generation in response to first incident, send measurement result to said RNC, wherein said first incident is defined as measurement result and is lower than predetermined threshold.
According to the measurement result of sending in response to the generation of first incident, IRAT switches and can be triggered between wireless access technology.
This method can also comprise: in response to the generation of second incident, send measurement result to said RNC, wherein said second incident is defined as measurement result and is higher than said predetermined threshold.According to the measurement result of sending in response to the generation of second incident, IRAT switches and can be stopped.
The quality of connection of P-CCPCH can be represented by received signal code power RSCP.Measurement result can be to send to said RNC as the information element IE in the measurement report message.
First incident can be by said RNC configuration.Second incident can be by said RNC configuration.
According to a further aspect in the invention, a kind of method in the radio network controller (RNC) of TD SDMA TD-SCDMA communication network is provided, the subscriber equipment of said RNC services on main carrier.Said method comprises: configuration first incident in said subscriber equipment; The generation of said first incident can cause that the measurement result of Primary Common Control Physical Channel P-CCPCH quality of connection sends to said RNC from said subscriber equipment, and wherein said first incident is defined as measurement result and is lower than predetermined threshold.
This method can also comprise: when first incident takes place, after receiving measurement result, trigger IRAT switching between wireless access technology.
This method can also comprise: configuration second incident in said subscriber equipment, and the generation of said second incident can cause that measurement result sends to said RNC from said subscriber equipment, wherein said first incident is defined as measurement result and is higher than said predetermined threshold.
This method can also comprise: when second incident takes place, after receiving measurement result, stop IRAT and switch.
The quality of connection of P-CCPCH can be represented by received signal code power RSCP.Measurement result can be to send to said RNC from said subscriber equipment as the information element IE in the measurement report message.
According to another aspect of the invention, a kind of subscriber equipment that adapts at the Serving cell of the radio network controller (RNC) that is arranged in TD SDMA TD-SCDMA communication network is provided, said subscriber equipment adapts to and is operated on the main carrier.Said subscriber equipment comprises: be used to measure the device about the quality of connection of the Primary Common Control Physical Channel P-CCPCH of Serving cell; With the generation that is used in response to first incident, send the device of measurement result to said RNC, wherein said first incident is defined as measurement result and is lower than predetermined threshold.
According to the measurement result of sending in response to the generation of first incident, IRAT switches and can be triggered between wireless access technology.
Subscriber equipment can also comprise: be used for the generation in response to second incident, send the device of measurement result to said RNC, wherein said second incident is defined as measurement result and is higher than said predetermined threshold.According to the measurement result of sending in response to the generation of second incident, IRAT switches and can be stopped.
The quality of connection of P-CCPCH can be represented by received signal code power RSCP.Measurement result can be to send to said RNC as the information element IE in the measurement report message.
First incident can be by said RNC configuration.Second incident can be by said RNC configuration.
According to another aspect of the invention, a kind of radio network controller (RNC) of TD SDMA TD-SCDMA communication network is provided, said RNC adapts to the subscriber equipment of services on main carrier.Said RNC comprises: be used for the device in said subscriber equipment configuration first incident; The generation of said first incident can cause that the measurement result of Primary Common Control Physical Channel P-CCPCH quality of connection sends to said RNC from said subscriber equipment, and wherein said first incident is defined as measurement result and is lower than predetermined threshold.
RNC can also comprise: be used for when first incident of generation, after receiving measurement result, triggering IRAT device for switching between wireless access technology.
RNC can also comprise: be used for the device in said subscriber equipment configuration second incident; The generation of said second incident can cause that measurement result sends to said RNC from said subscriber equipment, and wherein said first incident is defined as measurement result and is higher than said predetermined threshold.
RNC can also comprise: be used for when second incident of generation, after receiving measurement result, stopping the IRAT device for switching.
The quality of connection of P-CCPCH can be represented by received signal code power RSCP.Measurement result can be to send to said RNC from said subscriber equipment as the information element IE in the measurement report message.
According to another aspect of the invention, a kind of TD SDMA TD-SCDMA communication network is provided, comprises like foregoing RNC and as foregoing subscriber equipment.
Description of drawings
The present invention with and purpose and advantage will be understood better through description with reference to the accompanying drawings, in the accompanying drawings:
Fig. 1 is the sketch map that illustrates according to TD-SCDMA communication network of the present invention;
Fig. 2 is the schematic diagram that interior measurement of frequency and inter-frequency measurements are shown;
Fig. 3 is according to the message sequence chart in the IRAT handoff procedure of the present invention;
Fig. 4 is the flow chart that illustrates according to the method among the UE of the present invention; And
Fig. 5 is the flow chart that illustrates according to the method among the RNC of the present invention.
Embodiment
In the accompanying drawings, for the Reference numeral of identical or close element with use.
Before describing each embodiment in detail, should be understood that, the invention is not restricted to the specific composition parts of described equipment or the treatment step of described method, because these equipment and method can change.It is also understood that term used herein only is in order to describe the purpose of specific embodiment, but not intention is restrictive.Must be noted that the singulative that in specification and claims, uses " ", " another ", " being somebody's turn to do ", " said " possibly also comprise plural, only if clear from context refer else.Therefore, for example term " equipment " possibly refer to one or more equipment.
" subscriber equipment " used herein (UE) can be represented portable terminal, for example moves or cell phone perhaps mobile TV client, but the terminal that also can represent to be connected to communication network and carry out the other types of switching.Wireless base station (being called Node B again) region covered can be represented in term used herein " sub-district ".In specification, term " sub-district ", " wireless base station " and " Node B " can use with the mode of exchanging.Signaling described in the accompanying drawing only is exemplary.Process of the present invention is not must be according to the signaling that combines accompanying drawing to describe.These signalings can perhaps can dispense a wherein part with any suitable sequential combination, and perhaps necessary words can be added new signaling.
In order to understand the present invention better, begin from concise and to the point system outline.
Fig. 1 is schematically illustrated according to TD-SCDMA communication network of the present invention.The TD-SCDMA communication network comprises core net (CN) and radio area network (RAN).As shown in Figure 1, RAN comprises wireless base station (RBS) 120 and the current subscriber equipment (UE) 140 by RBS 120 services of radio network controller (RNC) 110, Serving cell A.RBS 120 supports TD-SCDMA, and communicates by letter with UE 140 with TD-SCDMA technology.UE 140 can be cell phone, PDA or portable computer etc., and can support TD-SCDMA standard and other RAT, and (IRAT) switches between wireless access technology to allow.Suppose that UE 140 also is positioned at another wireless access technology (RAT) simultaneously, for example in the sub-district B of GSM or W-CDMA.RNC 110 links to each other with RBS 120 and controls it.
Fig. 2 illustrates the notion of interior measurement of frequency and inter-frequency measurements.
As shown in Figure 2, in a TD-SCDMA sub-district, can dispose a more than carrier wave.Generally speaking, control channel only is dispensed on the main carrier, and Traffic Channel can be dispensed on main carrier or the subcarrier." beacon channel " P-PCCPCH is positioned on the main carrier.When UE is operated on one of subcarrier and measures the quality of connection of P-CCPCH, be called inter-frequency measurements.And when UE is operated on the main carrier and measure the quality of connection of P-CCPCH, is called in the frequency and measures.
In the TD-SCDMA standard, only defined at present two and be used for the incident that the P-CCPCH quality of connection is measured between frequency, that is, incident 2b: the estimated quality that the estimated quality of the frequency of current use is lower than certain threshold value and untapped frequency is higher than certain threshold value; And incident 2f: the frequency of current use is higher than certain threshold value.There is not definition to be used for the incident that the P-CCPCH quality of connection is measured in the frequency.Therefore, when UE is operated on the main carrier, can only under the situation that does not have the P-CCPCH quality of connection to measure, triggers IRAT and switch.Do not have the P-CCPCH quality of connection to measure, in a single day UE gets into single user state just needs other RAT of beginning to measure.Like this, UE need consume bigger electric power and carries out other RAT and measure.
The present invention proposes in current TD-SCDMA standard, to add two kinds of new incidents that are used for P-CCPCH quality of connection measurement in the frequency.When UE is operated on the main carrier, had the P-CCPCH quality of connection to measure like this, UE can just begin other RAT and measure when the P-CCPCH quality of connection is relatively poor.Compare with the situation that does not have the P-CCPCH quality of connection to measure, can save valuable electric power.
According to the present invention, following two kinds of new incidents that are used for P-CCPCH quality of connection measurement in the frequency have been defined.
Incident #1:
The P-CCPCH quality of connection of measuring is lower than predetermined threshold.
Incident #2:
The P-CCPCH quality of connection of measuring is higher than predetermined threshold.
Typically, the P-CCPCH quality of connection can be represented by RSCP, but should be appreciated that quality of connection also can be by other parametric representations that is fit to.
Referring now to Fig. 3, describe according to the message sequence in the IRAT handoff procedure of the present invention.
The incident that the P-CCPCH quality of connection is measured in the frequency that is used for that these two definition have been arranged, UE can report that the P-CCPCH quality of connection is to determine whether that triggering IRAT switches to RNC.Specifically, if UE is operated on the main carrier, RNC for example sends DCCH (AM) to UE: CELL_DCH MEASUREMENT CONTROL (#1) is message (Setup), and indication UE measures the P-CCPCH quality of connection about Serving cell.Under the situation of the incident of generation # 1; That is, the P-CCPCH quality of connection of measurement is lower than threshold value, and then UE can send measurement result to RNC; For example; DCCH (AM): CELL_DCH MEASUREMENT REPORT (#1) message, the P-CCPCH quality of connection of indication Serving cell is bad, can trigger IRAT and switch.RNC carries out handoff algorithms, and for example, can as shown in Figure 3ly send DCCH (AM) to UE: CELL_DCH MEASUREMENT CONTROL (3a-Setup) message, indication UE further carries out the measurement of other IRAT cell signal strength.Under the situation of the incident of generation # 2, that is, the P-CCPCH quality of connection of measurement is higher than threshold value, and then UE can send measurement result to RNC, for example, and DCCH (AM): CELL_DCH MEASUREMENT REPORT (#2) message.RNC carries out handoff algorithms; And for example; If the current IRAT that does not carry out switches; RNC can ignore measurement result, if perhaps exist the IRAT that is triggering to switch, RNC can send DCCH (AM) to UE: CELL_DCH MEASUREMENT CONTROL (3a-Release) message stops this IRAT and switches.
Above-mentioned two new events can be disposed by RNC.The information element (IE) that the measurement result of new events # 1 or #2 can be used as in measurement report (MEASUREMENT REPORT) message sends.Whether this IE can indicate interior measurement event # 1 of frequency or incident # 2 to take place.
Fig. 4 illustrates the step of the method among the UE 140 that carries out according to the embodiment of the invention.
At first, at S410, be operated in the P-CCPCH quality of connection that the UE 140 on the main carrier measures about Serving cell.Then, at S420, UE 140 sends measurement result in response to first incident of generation to RNC 110.First incident is defined as measurement result and is lower than predetermined threshold.As a result, triggering IRAT according to the measurement result of sending in response to the generation of first incident switches.At S430, UE 140 sends measurement result in response to second incident of generation to RNC 110.Second incident is defined as measurement result and is higher than predetermined threshold.As a result, stopping IRAT according to the measurement result of sending in response to the generation of second incident switches.
Fig. 5 illustrates the step of the method among the RNC 110 that carries out according to the embodiment of the invention.
UE 140 is positioned at the Serving cell of RNC 110 and is operated on the main carrier.At first, at S510, RNC 110 disposes first incident in UE 140, and the generation of this first incident can cause that the measurement result of P-CCPCH quality of connection sends to RNC 110 from UE 140.First incident is defined as measurement result and is lower than predetermined threshold.When first incident took place, RNC 110 can trigger IRAT and switch after receiving measurement result.At S520, RNC 110 disposes second incident in UE 140, and the generation of this second incident can cause that the measurement result of P-CCPCH quality of connection sends to RNC 110 from UE 140.Second incident is defined as measurement result and is higher than predetermined threshold.When first incident took place, RNC 110 can stop IRAT and switch after receiving measurement result.
Because introduced two new incidents that are used for P-CCPCH quality of connection measurement in the frequency, IRAT switches and can under the situation with P-CCPCH quality of connection metrical information, trigger.Therefore, in case the UE that is operated on the main carrier does not need the entering single user state just to begin other RAT measurements, measure but can when the P-CCPCH quality of connection is relatively poor, just begin other RAT.Therefore, save the electric power of subscriber equipment, and can reduce signaling traffic.
Although in the description of said accompanying drawing and front, illustrated and described the present invention, such diagram and description should be considered to illustrative or exemplary, rather than restrictive.The present invention is not limited to the disclosed embodiments.Through reading present disclosure, other modification should be well-known to those skilled in the art.Such modification can relate to as known in the art and can replace or be additional to the characteristic that this paper described and other characteristics of using.
Claims (29)
1. method at the subscriber equipment of the Serving cell of the radio network controller (RNC) that is arranged in TD SDMA TD-SCDMA communication network, said subscriber equipment is operated on the main carrier, and said method comprises:
Measurement is about the quality of connection of the Primary Common Control Physical Channel P-CCPCH of Serving cell; With
In response to the generation of first incident, send measurement result to said RNC, wherein
Said first incident is defined as measurement result and is lower than predetermined threshold.
2. according to the process of claim 1 wherein the measurement result of sending according in response to the generation of first incident, the IRAT switching is triggered between wireless access technology.
3. according to the method for claim 1, also comprise:
In response to the generation of second incident, send measurement result to said RNC, wherein
Said second incident is defined as measurement result and is higher than said predetermined threshold.
4. according to the method for claim 3, wherein according to the measurement result of sending in response to the generation of second incident, the IRAT switching is stopped.
5. according to any method among the claim 1-4, wherein the quality of connection of P-CCPCH is represented by received signal code power RSCP.
6. according to any method among the claim 1-4, wherein measurement result is to send to said RNC as the information element IE in the measurement report message.
7. according to any method among the claim 1-4, wherein first incident is disposed by said RNC.
8. according to the method for claim 3 or 4, wherein second incident is disposed by said RNC.
9. method in the radio network controller (RNC) of TD SDMA TD-SCDMA communication network, the subscriber equipment of said RNC services on main carrier, said method comprises:
Configuration first incident in said subscriber equipment, the generation of said first incident can cause that the measurement result of Primary Common Control Physical Channel P-CCPCH quality of connection sends to said RNC from said subscriber equipment, wherein
Said first incident is defined as measurement result and is lower than predetermined threshold.
10. according to the method for claim 9, also comprise:
When first incident takes place, after receiving measurement result, trigger IRAT switching between wireless access technology.
11. the method according to claim 9 also comprises:
Configuration second incident in said subscriber equipment, the generation of said second incident can cause that measurement result sends to said RNC from said subscriber equipment, wherein
Said first incident is defined as measurement result and is higher than said predetermined threshold.
12. the method according to claim 11 also comprises:
When second incident takes place, after receiving measurement result, stop IRAT and switch.
13. according to any method among the claim 9-12, wherein the quality of connection of P-CCPCH is represented by received signal code power RSCP.
14. according to any method among the claim 9-12, wherein measurement result is to send to said RNC from said subscriber equipment as the information element IE in the measurement report message.
15. a subscriber equipment that adapts at the Serving cell of the radio network controller (RNC) that is arranged in TD SDMA TD-SCDMA communication network, said subscriber equipment adapts to and is operated on the main carrier, and said subscriber equipment comprises:
Be used to measure device about the quality of connection of the Primary Common Control Physical Channel P-CCPCH of Serving cell; With
Be used for generation, send the device of measurement result to said RNC, wherein in response to first incident
Said first incident is defined as measurement result and is lower than predetermined threshold.
16. according to the subscriber equipment of claim 15, wherein according to the measurement result of sending in response to the generation of first incident, the IRAT switching is triggered between wireless access technology.
17. the subscriber equipment according to claim 15 also comprises:
Be used for generation, send the device of measurement result to said RNC, wherein in response to second incident
Said second incident is defined as measurement result and is higher than said predetermined threshold.
18. according to the subscriber equipment of claim 17, wherein according to the measurement result of sending in response to the generation of second incident, the IRAT switching is stopped.
19. according to any subscriber equipment among the claim 15-18, wherein the quality of connection of P-CCPCH is represented by received signal code power RSCP.
20. according to any subscriber equipment among the claim 15-18, wherein measurement result is to send to said RNC as the information element IE in the measurement report message.
21. according to any subscriber equipment among the claim 15-18, wherein first incident is disposed by said RNC.
22. according to the subscriber equipment of claim 17 or 18, wherein second incident is disposed by said RNC.
23. the radio network controller (RNC) of a TD SDMA TD-SCDMA communication network, said RNC adapt to the subscriber equipment of services on main carrier, said RNC comprises:
Be used for the device in said subscriber equipment configuration first incident, the generation of said first incident can cause that the measurement result of Primary Common Control Physical Channel P-CCPCH quality of connection sends to said RNC from said subscriber equipment, wherein
Said first incident is defined as measurement result and is lower than predetermined threshold.
24. the RNC according to claim 23 also comprises:
Be used for when first incident of generation, after receiving measurement result, triggering IRAT device for switching between wireless access technology.
25. the RNC according to claim 23 also comprises:
Be used for the device in said subscriber equipment configuration second incident, the generation of said second incident can cause that measurement result sends to said RNC from said subscriber equipment, wherein
Said first incident is defined as measurement result and is higher than said predetermined threshold.
26. the RNC according to claim 25 also comprises:
Be used for when second incident of generation, after receiving measurement result, stopping the IRAT device for switching.
27. according to any RNC among the claim 23-26, wherein the quality of connection of P-CCPCH is represented by received signal code power RSCP.
28. according to any RNC among the claim 23-26, wherein measurement result is to send to said RNC from said subscriber equipment as the information element IE in the measurement report message.
29. a TD SDMA TD-SCDMA communication network, comprise according among the claim 23-28 any radio network controller (RNC) and according to any subscriber equipment among the claim 15-22.
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| CN2010102331176A CN102340836A (en) | 2010-07-16 | 2010-07-16 | New measurement event in switching |
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| CN2010102331176A CN102340836A (en) | 2010-07-16 | 2010-07-16 | New measurement event in switching |
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| CN107534884B (en) * | 2015-08-12 | 2021-11-09 | 谷歌有限责任公司 | Switching between networks based on quality of available networks |
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Application publication date: 20120201 |