CN1965605B - Improving intersystem cell reselection from GERAN to UTRAN - Google Patents
Improving intersystem cell reselection from GERAN to UTRAN Download PDFInfo
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- CN1965605B CN1965605B CN2005800189192A CN200580018919A CN1965605B CN 1965605 B CN1965605 B CN 1965605B CN 2005800189192 A CN2005800189192 A CN 2005800189192A CN 200580018919 A CN200580018919 A CN 200580018919A CN 1965605 B CN1965605 B CN 1965605B
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Abstract
本发明描述了一种由移动台从由GSM/EDGE(全球移动通信系统/GSM演进增强数据速率)无线接入网(GERAN)所支持的服务GERAN小区到由通用地面无线接入网(UTRAN)所支持的UTRAN小区进行小区重选的方法。根据本发明的第一种实施方式，所涉及的系统间重选行为无需信令改变而实现。这可作为早期实现的优选模式，因为信令改变经常花费更长时间来实现本领域内的产品(通常，移动设备和网络更新二者都有所需要)。根据本发明的第二种实施方式，信令改变的灵活性作为一种优点加以使用。
The present invention describes a mobile station from a serving GERAN cell supported by a GSM/EDGE (Global System for Mobile Communications/Enhanced Data Rates for GSM Evolution) Radio Access Network (GERAN) to a Universal Terrestrial Radio Access Network (UTRAN) The supported UTRAN cell reselection method. According to the first embodiment of the present invention, the involved inter-system reselection behavior is realized without signaling changes. This may be the preferred mode for early implementation, as signaling changes often take longer to implement in the field (often both mobile device and network updates are required). According to a second embodiment of the invention, the flexibility of signaling changes is used as an advantage.
Description
The cross reference of related application
It is the U.S. Provisional Patent Application on June 10th, 2004 that the application requires the submission date, and sequence number 60/578,639 and submission date are the U. S. application on May 13rd, 2005, the priority of sequence number 11/129,673.
Technical field
The present invention relates to reselection optimization between the system in the mobile communication system, and relate more specifically to the sub-district gravity treatment from GERAN to UTRAN.
Background technology
Existing 2G is based on the threshold value of Universal Terrestrial Radio Access Network (UTRAN) Common Pilot Channel (CPICH) Ec/No (ratios of whole power spectrum densities that the energy that every PN chip receives from CPICH and the antenna connector at travelling carriage receive) and based on signal code power (RSCP) level of the reception of the UTRAN CPICH of the signal level (RXLEV) that receives with respect to GSM EDGE Radio Access Network (GERAN) Serving cell to the sub-district gravity treatment of 3G.In addition, if do not satisfy the applied code S (Srxlev＞0 and Squal＞0) of UTRAN Target cell, the then sub-district gravity treatment for UTRAN may be under an embargo (gravity treatment still can be triggered).
TeliaSonera company has proposed improvement that a kind of new threshold value for this UTRAN CPICH RSCP changes based on signaling so that the sub-district gravity treatment from GERAN to UTRAN of control except existing parameter.(existing parameter is seen the change request 45.008CR205 of the 19th the GPP TSG-GERAN meeting that 19-23 day in April, (1) 2004 holds in Mexico Kang Kan city, Tdoc GP-040586, (2) Tdoc GP-040585, " Background for WCDMAuplink best characterized by CPICH RSCP and downlink by CPICHEc/No ", and on October 6th, (3) 2004 is by the recommendation " Need to study for Cell Re-selection specification changes " of Ari-Pekka Salovaara proposition, 10,06,04).
When GERAN carries out gravity treatment to the UTRAN sub-district, be not present in the I of being signaled in the global system for mobile communications (GSM) at present and receive UTRAN CPICH RSCP threshold value.The result is exactly when the UTRAN sub-district that travelling carriage can be used gravity treatment, and no matter whether the UTRAN sub-district is fit to (adding practical the hysteresis to avoid ping-pong), all can not use gravity treatment behavior initiatively.
More especially, if this gravity treatment only (is " negative infinite " by RSCP is set than RXLEV offset criteria with existing Ec/No threshold value control, promptly, the received signal intensity indication (RSSI) that allows gravity treatment and do not consider Serving cell is than Target cell RSCP), the UTRAN sub-district that mobile device can not load from the far apart local gravity treatment of up link failure (if especially this UTRAN sub-district is in the edge of UTRAN coverage).On the other hand, when this Ec/No threshold value is set to (to guarantee the access of up link) when enough high, travelling carriage may can't insert fully the UTRAN sub-district of loading or at least this travelling carriage need more than the network planning be scheduled to will close more target UTRAN website.
The origin of this problem as what explain in the TeliaSonera document that above relates to, is owing to depend on the loading of UTRAN sub-district, and UTRAN CPICH Ec/No alters a great deal and especially for the sub-district that is in the UTRAN coverage edge.This makes and can not be arranged on wherein that up link is guaranteed the gravity treatment that exercisable some place takes place, and meanwhile make this travelling carriage gravity treatment UTRAN sub-district, as long as up link and both downlink all can be operated (basically when UTRAN CPICH RSCP and Ec/No all have enough level).In the applied code of UTRAN, comprise minimum threshold based on CPICH RSCP.
Summary of the invention
The purpose of this invention is to provide a kind of by travelling carriage from the service GERAN sub-district supported by global system for mobile communications/Enhanced Data rates for GSM Evolution (GSM/EDGE) wireless access network (GERAN) method of cell reselection to the UTRAN sub-district of being supported by Universal Terrestrial Radio Access Network (UTRAN).
According to first kind of execution mode of the present invention, the gravity treatment behavior need not signaling and changes and be achieved between related system.This can be that preferred pattern often spends the product (mobile device and network upgrade the two usually all has required) that is implemented in for more time in this area because signaling changes for early stage realization.According to second kind of execution mode of the present invention, it is a kind of advantage that the flexibility that signaling changes is used as, and therefore this change is intended to need not support insistently by moving with the network equipment.
According to a first aspect of the invention, a kind of by the method for cell reselection of travelling carriage from the Serving cell supported by first wireless access technology to the sub-district of supporting by second wireless access technology, comprise the steps: to select the former sub-district of supporting by second wireless access technology and read and store RSCP applicable threshold from the sub-district before this; By this mobile station in selecting Serving cell; And set up by this travelling carriage and to be used for from the reselection criteria of this Serving cell re-selecting cell, wherein reselection criteria comprises at least one threshold value, this threshold value comprises that this RSCP applicable threshold adds by this travelling carriage and uses the defined skew that settles the standard in advance.
Further according to a first aspect of the invention, this Serving cell can be service GERAN sub-district, this sub-district can be the UTRAN sub-district, sub-district in the past can be last UTRAN sub-district, first wireless access technology can be GSM EDGE Radio Access Network (GERAN), and second wireless access technology can be that Universal Terrestrial Radio Access Network (UTRAN) and this RSCP applicable threshold can be UTRAN RSCP applicable threshold.In addition, this method can comprise the steps: to determine reselection criteria for the UTRAN sub-district whether suitable and, if suitable, by this UTRAN sub-district of this travelling carriage gravity treatment.Further, before the step of selecting service GERAN sub-district, this method still can comprise the steps: to select last UTRAN sub-district and read and store UTRAN RSCP applicable threshold from this last UTRAN sub-district.Still can be further, this skew can comprise that lagged value maybe can use the power capability definition of this travelling carriage.
According to a second aspect of the invention, a kind of computer program comprises: the computer-readable storage organization, its computer program code that is embodied as thereon is used for being carried out by the computer processor with computer program code, be characterised in that the instruction that it comprises the step that is used to move first aspect present invention, any parts that this instruction is indicated as by this travelling carriage, GSM EDGE Radio Access Network (GERAN) or Universal Terrestrial Radio Access Network (UTRAN) are moved.
According to a third aspect of the invention we, a kind of by the method for cell reselection of travelling carriage from the Serving cell supported by first wireless access technology to the sub-district of supporting by second wireless access technology, comprise the steps: by this mobile station in selecting Serving cell; And set up first and second reselection criteria that are used for from this Serving cell re-selecting cell by this travelling carriage, wherein this first reselection criteria comprises threshold value, this threshold value comprises that the ratio (Ec/No) of every PN chip Secondary Common Pilot Channel (CPICH) energy that receives and the whole power spectrum densities that receive at mobile portable antennas connector place adds the skew that is appended to this ratio by this travelling carriage, and this second reselection criteria comprises the RSCP threshold value, and this Serving cell provides skew and this RSCP threshold value to described ratio to this travelling carriage.
Further according to a third aspect of the invention we, this Serving cell can be service GERAN sub-district, this sub-district can be the UTRAN sub-district, first wireless access technology can be GSM EDGE Radio Access Network (GERAN), and second wireless access technology can be that Universal Terrestrial Radio Access Network (UTRAN) and this RSCP threshold value can be UTRAN RSCP threshold values.In addition, this method can also comprise the steps: to determine first and second reselection criteria for the UTRAN sub-district whether suitable and, if suitable, by this UTRAN sub-district of this travelling carriage gravity treatment.Still can be further, this UTRAN RSCP threshold value can comprise that lagged value maybe can use the power capability definition of this travelling carriage.
According to a forth aspect of the invention, a kind of computer program comprises: the computer-readable storage organization, its computer program code that is embodied as thereon is used for being carried out by the computer processor with computer program code, be characterised in that the instruction that it comprises the step that is used to move third aspect present invention, any parts that this instruction is indicated as by this travelling carriage, GSM EDGE Radio Access Network (GERAN) or Universal Terrestrial Radio Access Network (UTRAN) are moved.
According to a fifth aspect of the invention, a kind of travelling carriage that can carry out the sub-district gravity treatment to the sub-district of supporting by second wireless access technology from the Serving cell of supporting by first wireless access technology, comprise: reception/transmission/processing module, threshold signal in response to having indicated from the RSCP applicable threshold of this former sub-district of being supported by second wireless access technology is used to provide the threshold signal that is received of having indicated this RSCP applicable threshold; And cell reselection block, in response to the threshold signal that is received of having indicated this RSCP applicable threshold, be used to set up the reselection criteria that is used for from this Serving cell re-selecting cell, wherein reselection criteria comprises at least one threshold value, and this threshold value comprises that this RSCP applicable threshold adds by this cell reselection block and uses the defined skew that settles the standard in advance.
Further according to a fifth aspect of the invention, this Serving cell can be service GERAN sub-district, this sub-district can be the UTRAN sub-district, sub-district in the past can be last UTRAN sub-district, first wireless access technology can be GSM EDGE Radio Access Network (GERAN), and second wireless access technology can be that Universal Terrestrial Radio Access Network (UTRAN) and this RSCP applicable threshold can be UTRAN RSCP applicable threshold.In addition, cell reselection block can determine reselection criteria for the UTRAN sub-district whether suitable and, if suitable, by this UTRAN sub-district of this travelling carriage gravity treatment.Further, this skew can comprise that lagged value maybe can use the power capability definition of this travelling carriage.Still can be further, travelling carriage can comprise: memory is used to store this UTRAN RSCP applicable threshold.
According to a sixth aspect of the invention, a kind of travelling carriage that can carry out the sub-district gravity treatment to the sub-district of supporting by second wireless access technology from the Serving cell of supporting by first wireless access technology, comprise: reception/transmission/processing module, in response to signal from this Serving cell, this signal has been indicated the skew of energy that this RSCP applicable threshold and every PN chip Secondary Common Pilot Channel (CPICH) receive and the ratio (Ec/No) of the whole power spectrum densities that receive at mobile portable antennas connector place, the signal of the skew of be used to provide the indication that received this RSCP threshold value and this ratio; And cell reselection block, the signal that is received in response to the skew of having indicated this UTRAN RSCP applicable threshold and this ratio, be used to set up first and second reselection criteria in order to from this Serving cell re-selecting cell, wherein, this first reselection criteria comprises a threshold value, this threshold value has comprised that this ratio (Ec/No) adds the skew that is additional to this ratio, and this second reselection criteria comprises the RSCP threshold value.
Further according to a sixth aspect of the invention, this Serving cell can be service GERAN sub-district, this sub-district can be the UTRAN sub-district, first wireless access technology can be GSM EDGE Radio Access Network (GERAN), second wireless access technology can be that Universal Terrestrial Radio Access Network (UTRAN) and this RSCP threshold value can be UTRAN RSCP threshold values, and signal can be that GERAN signal and the signal that received can be the signals that GERAN receives.In addition, cell reselection block can determine first and second reselection criteria for the UTRAN sub-district whether suitable and, if suitable, by this UTRAN sub-district of this travelling carriage gravity treatment.Further, this UTRANRSCP threshold value comprises that lagged value maybe can use the power capability of travelling carriage to be defined.Still can be further, this travelling carriage comprises: memory is used to store this UTRAN RSCP threshold value, ratio and skew.
According to a seventh aspect of the invention, a kind of system that uses sub-district gravity treatment from GSM EDGE Radio Access Network (GERAN) to Universal Terrestrial Radio Access Network (UTRAN), comprise: last UTRAN sub-district, supported by Universal Terrestrial Radio Access Network, be used to provide the threshold signal of having indicated UTRAN RSCP applicable threshold; Service GERAN sub-district is supported by GSM EDGE Radio Access Network; The UTRAN sub-district is supported by Universal Terrestrial Radio Access Network; And travelling carriage, in response to the threshold signal of having indicated UTRAN RSCP applicable threshold, be used to set up reselection criteria in order to from this service GERAN sub-district gravity treatment UTRAN sub-district, wherein this reselection criteria comprises at least one threshold value, and this threshold value has comprised that UTRAN RSCP applicable threshold adds by this travelling carriage and used the defined skew that settles the standard in advance.
Further according to a seventh aspect of the invention, this travelling carriage can determine reselection criteria for the UTRAN sub-district whether suitable and, if suitable, by this UTRAN sub-district of this travelling carriage gravity treatment.
According to an eighth aspect of the invention, a kind of system that uses the sub-district gravity treatment from GSM EDGE Radio Access Network (GERAN) to Universal Terrestrial Radio Access Network (UTRAN) comprises: the UTRAN sub-district, supported by Universal Terrestrial Radio Access Network; Travelling carriage, in response to the GERAN signal, it has indicated the skew of energy with the ratio (Ec/No) of the whole power spectrum densities that receive at mobile portable antennas connector place of UTRAN RSCP threshold value and every PN chip Secondary Common Pilot Channel (CPICH) reception, be used to set up first and second reselection criteria in order to this UTRAN sub-district of gravity treatment, wherein this first reselection criteria has comprised a threshold value, this threshold value comprises that this ratio (Ec/No) adds by this travelling carriage and is attached to skew on this ratio, and second reselection criteria comprises UTRAN RSCP threshold value; And service GERAN sub-district (20-1-A), supported by GSM EDGE Radio Access Network, be used to provide this GERAN signal, if wherein this travelling carriage determines that this first and second reselection criteria is suitable for this UTRAN sub-district, then this travelling carriage is this UTRAN sub-district from this service GERAN sub-district gravity treatment.
According to a ninth aspect of the invention, a kind of can the execution from the service GERAN sub-district supported by GSM EDGE Radio Access Network (GERAN) to the integrated circuit of the sub-district gravity treatment of the UTRAN sub-district of being supported by Universal Terrestrial Radio Access Network (UTRAN), comprise: reception/transmission/processing module, threshold signal in response to having indicated from the UTRAN RSCP applicable threshold of this UTRAN sub-district of being supported by Universal Terrestrial Radio Access Network is used to provide the threshold signal that is received of having indicated this UTRAN RSCP applicable threshold; And cell reselection block, in response to the threshold signal that is received of having indicated this UTRAN RSCP applicable threshold, be used to set up the reselection criteria that is used for from this service GERAN sub-district gravity treatment UTRAN sub-district, wherein reselection criteria comprises at least one threshold value, and this threshold value comprises that this UTRAN RSCP applicable threshold adds by this cell reselection block and uses the defined skew that settles the standard in advance.
According to the tenth aspect of the invention, a kind of integrated circuit travelling carriage that can carry out the sub-district gravity treatment to the UTRAN sub-district of being supported by Universal Terrestrial Radio Access Network (UTRAN) from the service GERAN sub-district of being supported by GSM EDGE Radio Access Network (GERAN), comprise: reception/transmission/processing module, in response to GERAN signal from service GERAN sub-district, this signal has been indicated the skew of energy that UTRAN RSCP threshold value and every PN chip Secondary Common Pilot Channel (CPICH) receive and the ratio (Ec/No) of the whole power spectrum densities that receive at mobile portable antennas connector place, is used to provide the GERAN signal that is received of having indicated this UTRAN RSCP threshold value and the skew of this ratio; And cell reselection block, the GERAN signal that is received in response to the skew of having indicated this UTRAN RSCP threshold value and this ratio, be used to set up first and second reselection criteria that are used for from this service GERAN sub-district gravity treatment UTRAN sub-district, wherein first reselection criteria comprises a threshold value, this threshold value comprises that this ratio (Ec/No) adds the skew that is attached on this ratio, and second reselection criteria comprises this UTRAN RSCP threshold value.
The advantage of the present invention's first pattern is in fact can finish without signaling changes with the identical behavior that prior art is proposed.Also have an advantage be exactly in some sense by the ripe and other already new argument (for example reselecting parameters between system) of the ability of GERAN broadcast system information may otherwise impossible, if or still add these parameters exactly then some even more important expansions can't be realized in future.
The advantage of second pattern is, prior art is being proposed can finish identical mobile behavior under the improved situation, but in addition, network can suitably be controlled old terminal (those only meet the terminal of existing gravity treatment rule) and new terminal.Usually this CPICH Ec/No threshold value should be set to the UTRAN sub-district of suitable height to avoid travelling carriage not loaded by gravity treatment periodically for old terminal, and new mobile device can use Ec/No threshold value (owing to it is controlled the risk of not having the up link fault by this new RSCP threshold value) more initiatively.
In addition, because uplink failure will depend on the power output ability of travelling carriage, method of the present invention is also more accurate.Have at travelling carriage under the preferable case of higher power output ability, will accept lower RSCP threshold value.
Description of drawings
In order to understand essence of the present invention and purpose better, in conjunction with the accompanying drawings to hereinafter describing reference in addition in detail, wherein:
Fig. 1 show according to of the present invention by travelling carriage the system block diagram of a kind of execution mode of sub-district gravity treatment from the GERAN sub-district to the UTRAN sub-district;
Fig. 2 show according to of the present invention by travelling carriage the flow chart of a kind of execution mode of sub-district gravity treatment from the GERAN sub-district to the UTRAN sub-district; And
Fig. 3 show according to of the present invention by travelling carriage the flow chart of the another kind of execution mode of sub-district gravity treatment from the GERAN sub-district to the UTRAN sub-district.
Embodiment
The invention provides a kind of by travelling carriage from the service GERAN sub-district supported by GSM EDGE Radio Access Network (GERAN) new method to the sub-district gravity treatment of the UTRAN sub-district of being supported by Universal Terrestrial Radio Access Network (UTRAN).
According to first kind of execution mode of the present invention, the gravity treatment behavior need not signaling and changes and realize between related system.In first kind of execution mode of the present invention, advantage is, realizes being used for the threshold value of gravity treatment between system by using target UTRAN cell suitability criteria.No matter when gravity treatment is triggered by existing reselecting parameters, and travelling carriage all needs to read this target cell system information, and this at first is in order to assess the applied code on this sub-district.According to the present invention, at first be triggered but the gravity treatment trial of this Target cell applied code failure part in this gravity treatment for any, this travelling carriage will be this specific cell storage RSCP applied code (or UTRAN RSCP applied code).This value (promptly, this RSCP applicable threshold), alternatively (for example with the skew correct, use lagged value or consider the power capability of travelling carriage), this value can be used as immediately for this specific UTRAN sub-district and for gravity treatment will be evaluated the additional reselection criteria of other UTRAN sub-districts.This skew (for example, this lagged value) can be fixed so that avoid signaling to change by a kind of standard, and perhaps alternatively, the lag parameter that new argument may be added or other are feasible also can be used for this purpose.
Usually, this network modified value of going on the air makes this travelling carriage know new value if reselection criteria periodically is updated.May be limited to the identical time period but preferred validity can depend on the time to the applicability of the UTRAN value of being stored.If the likelihood that changes is little and changes that back (taking place in today for this phenomenon of limiting time section) this travelling carriage continues to use (in case reading) UTRAN parameter value then the reduction of performance will reach the limitation in the value of broadcasting.Chang section effective time will allow this travelling carriage to avoid repeatedly reading parameter because this travelling carriage may will move to a certain zone of other sub-districts from this identical alternative cell usually relatively.It will be to be reason based on incident that preferred validity triggers, and changes as the gravity treatment or the band of position.According to second kind of execution mode of the present invention, the flexibility that signaling changes is used as a kind of advantage.In second kind of execution mode of the present invention, not only the threshold value than UTRAN CPICH RSCP is added into this reselection criteria, and in addition, also be added into by those for the skew of UTRAN CPICH Ec/No and support the travelling carriage of new UTRAN RSCP threshold value to be used for reselection evaluation.In addition, be different from prior art, the present invention proposes to lag behind and/or travelling carriage power output ability is accepted the standard consideration so that handle the travelling carriage with different output power ability rightly as this RSCP.
Therefore, in first kind of execution mode, need be implemented in the annex memory that is used in this travelling carriage this UTRAN RSCP applicable threshold of the UTRAN sub-district of specific quantity (at least one).In second kind of execution mode, this travelling carriage need be upgraded to support new reselecting parameters.
Fig. 1 shows according to of the present invention and a kind ofly carries out a plurality of other examples of system block diagram of execution mode of sub-district gravity treatment one to the UTRAN sub-district from the GERAN sub-district by travelling carriage 10.
In the example of Fig. 1, this travelling carriage 10 comprises cell reselection block 14, memory 12 and transmission/reception/processing module 16.This cell reselection block 14 is to be used to realize that crucial piece of the present invention and all can both be by this cell reselection block 14 coordinations and initiations by these travelling carriage 10 steps performed, that relate to this sub-district gravity treatment.
According to the present invention, this piece 14 can be used as software or hardware block or their combination and is realized.In addition, this piece 14 piece of can be used as separation realized or can with any other calibrated bolck combination of this travelling carriage 10.This cell reselection block 14 can be used these memory 12 storages and fetch pertinent cell information described in the invention.In addition, this memory 12 can be realized by various different modes.It can be that the part of general-purpose storage of this travelling carriage 10 or its can be the reserved area that separates (for example, subscriber identification module (SIM) etc.).At last, this travelling carriage 10 comprises the transmission/reception/processing module 16 that can be realized by multiple mode, and this is that prior art is known.Usually, module 16 can comprise reflector, receiver, CPU and I/O piece or the like.Basically, this module 16 is used to provide the efficient communication of this cell reselection block 14 with network, hereinafter will describe in detail.
Fig. 1 shows at least two subnet 20-1 (GERAN type) and 20-2 (UTRAN type) in the responsive geographic area 24 of the radio that is used for this mobile device 10.Each subnet among these two subnet 20-1 and the 20-2 comprises the sub-district of some, for example, subnet 20-1 comprise N sub-district 20-1-1 ... 20-1-A ... 20-1-N and subnet 20-2 comprise N sub-district 20-2-F ... 20-2-A ... 20-2-N.According to relating to the detailed description that Fig. 2 and 3 makes, this travelling carriage 10 can for example resident (camp on) on the service GERAN sub-district of subnet 20-1 (for example sub-district 20-1-A), on the UTRAN sub-district of assessing for gravity treatment (for example sub-district 20-1-B) of resident subnet 20-2, or reside on (before selecting this Serving cell 20-1-A) UTRAN sub-district 20-1-F of previous selection.
Fig. 2 show according to of the present invention first kind by this travelling carriage 10 from the GERAN sub-district (for example Serving cell 20-1-A) (for example UTRAN sub-district 20-1-B) carries out the flow chart of the execution mode of sub-district gravity treatment to the UTRAN sub-district.
The flow chart of Fig. 2 has only been described a kind of possible situation in multiple other possibilities.In the method for first kind of execution mode according to the present invention, in first step 40, this travelling carriage (MS) 10 resident or " visit " this UTRAN sub-district (or last UTRAN sub-district) 20-1-F and detection (reading) applied codes.Especially, this reception/transmission/processing module 16, in response to threshold signal 31 (see figure 1)s of having indicated, the threshold signal that is received 22 (see figure 1)s of having indicated described UTRAN RSCP applicable threshold are provided to this cell reselection block 14 from the UTRAN RSCP applicable threshold of this UTRAN sub-district 20-1-F.
In next step 42, these MS 10 storage RSCP suitable parameters (that is, as the UTRANRSCP applicable threshold) are used for follow-up use (for example, UTRAN RSCP applicable threshold being stored in this memory 12).If improper this UTRAN sub-district of this UTRAN applied code 20-1-F, then in next step 46, this MS selects GERAN sub-district 20-1-A.In next step 48, this MS 10 (that is this cell reselection block 14) reads (seeing the respective signal 30 and 23 among Fig. 1) system information and (for example, points to local available neighbor cell, GERAN sub-district and UTRAN sub-district the two, pointer and also for example relevant reselecting parameters).
In next step 50, this MS 10 (that is this cell reselection block 14) produces the RSCP threshold value of being revised by skew (or " threshold value ") from this previous UTRAN suitable parameters of storing; Described threshold value is used to the reselection criteria from the GERAN sub-district to the UTRAN sub-district.This skew can comprise that lagged value maybe can use the power capability of this MS 10 to be defined (as noted above).In next step 52, this MS 10 (that is this cell reselection block 14) monitors the UTRAN CPICH RSCP level (using the standard of being set up in the step 50) of (seeing the respective signal 32 and 21 among Fig. 1) UTRAN neighbor cell and the RXLEV of CPICH Ec/No (this standard defines through prior art) and GERAN neighbor cell (its selected think gravity treatment and assess).
In step 54, determine whether that after reselection evaluation this reselection criteria is suitable for UTRAN or GERAN sub-district.If this reselection criteria (through prior art) is suitable for this GERAN sub-district, handle forwarding step 46 and the new GERAN sub-district of gravity treatment to.But, if this reselection criteria (being set up in step 50) is suitable for this UTRAN sub-district (for example sub-district 20-1-B), then this processing forwards step 40 and the new UTRAN sub-district (seeing above-mentioned steps 40) of possibility gravity treatment to.
Fig. 3 show according to of the present invention by MS 10 from the GERAN sub-district (for example, Serving cell 20-1-A) to the flow chart of second kind of execution mode of the sub-district gravity treatment of UTRAN sub-district (for example, UTRAN sub-district 20-1-B).
The flow chart of Fig. 3 has only been described a kind of possible situation in multiple other possibilities.In method according to first kind of execution mode of the present invention, in first step 56, this MS 10 selects these GERAN sub-district 20-1-A and reads (seeing the respective signal 30 and 23 among Fig. 1) that system information (for example, point to local available neighbor cell, GERAN sub-district and UTRAN sub-district the two, pointer and in addition relevant reselecting parameters).Especially, this reception/transmission/processing module 16 is in response to GERAN signal 30 (see figure 1)s, this signal has been indicated the skew of energy that UTRAN RSCP threshold value and every PN chip Secondary Common Pilot Channel (CPICH) receive and the ratio (Ec/No) of the whole power spectrum densities that receive at mobile portable antennas connector place, the GERAN signal 23 of the described skew of the indication that received is provided to this cell reselection block 14 described UTRAN RSCP threshold value and described ratio Ec/No.
In next step 60, this MS 10 (that is this cell reselection block 14) assessment also produces based on this UTRAN RSCP threshold value and based on the evaluation criteria of this Ec/No threshold value of revising with this Ec/No skew (therefore having kept the flexibility of controlling this Ec/No threshold value for mentioned above new and old equipment respectively).This UTRAN RSCP threshold value can comprise that lagged value maybe can use the power capability of this MS 10 to be defined (just as noted above).
In next step 62, (be similar to step 52), this MS 10 (that is this cell reselection block 14) monitors the UTRANCPICH RSCP level (using the standard of being set up in the step 60) of (seeing the respective signal 32 and 21 among Fig. 1) UTRAN neighbor cell and the RXLEV of CPICH Ec/No (standard of being set up in the use step 60) and GERAN neighbor cell (its selected think gravity treatment and assess).
In step 64, determine whether that after reselection evaluation this reselection criteria is suitable for UTRAN or GERAN sub-district.If this reselection criteria (through prior art) is suitable for this GERAN sub-district, handle forwarding step 56 and the new GERAN sub-district of gravity treatment to.But, if this reselection criteria (being set up in step 60) is suitable for this UTRAN sub-district (for example sub-district 20-1-B), then this processing forwards step 66 and the new UTRAN sub-district of possibility gravity treatment to.
Should be noted that according to the embodiment of the present invention intersystem cell reselection described in the present invention can be applied to various emerging wireless access technologys and not be exclusively used in the existing realization that relates to based on the system of GERAN and/or UTRAN.
As mentioned above, the invention provides method and comprise the various modules that the function of carrying out this method step is provided relevant device the two.This module can be implemented as hardware, or can be used as and be used for the software carried out by computer processor or firmware and realize.Especially, under the situation of firmware or software, can provide the present invention as the computer program that has comprised the computer-readable storage organization, on this computer-readable storage organization, realize being used for the computer program code of carrying out by computer processor (that is, this software or firmware).
Should be appreciated that layout mentioned above is only as the application of the principles of the present invention is illustrated.Those skilled in the art can make many modifications and alternative layout without departing from the scope of the invention, and the claims of enclosing are intended to cover these modifications and layout.
Claims (25)
1. method of cell reselection comprises:
The former sub-district of supporting by second wireless access technology by mobile station in selecting and read and store RSCP applicable threshold from the sub-district before described;
The Serving cell of supporting by first wireless access technology by described mobile station in selecting; And
Set up reselection criteria by described travelling carriage, be used for the sub-district supported by this second wireless access technology from described Serving cell gravity treatment, wherein said reselection criteria comprises at least one threshold value, described threshold value comprises that described RSCP applicable threshold adds by described travelling carriage and uses the defined skew that settles the standard in advance, is used for the sub-district gravity treatment from this Serving cell to the described sub-district of being supported by this second wireless access technology by this travelling carriage.
2. method according to claim 1, wherein said Serving cell is service GERAN sub-district, the described sub-district of being supported by this second wireless access technology is the UTRAN sub-district, sub-district before described is last UTRAN sub-district, described first wireless access technology is a GSM EDGE Radio Access Network, and described second wireless access technology is that Universal Terrestrial Radio Access Network and described RSCP applicable threshold are UTRAN RSCP applicable threshold.
3. method according to claim 2 further comprises:
Determine whether described reselection criteria is suitable for described UTRAN sub-district, and, if suitable, by the described UTRAN of described travelling carriage gravity treatment sub-district.
4. method according to claim 2, wherein before the step of selecting described service GERAN sub-district, described method comprises:
Select last UTRAN sub-district and read and store described UTRAN RSCP applicable threshold from described last UTRAN sub-district.
5. method according to claim 2, wherein said skew comprise lagged value or use the power capability of described travelling carriage to be defined.
6. method of cell reselection comprises:
The Serving cell of supporting by first wireless access technology by mobile station in selecting; And
Set up first and second reselection criteria by described travelling carriage, be used for the sub-district supported by second wireless access technology from described Serving cell gravity treatment, so that carry out the sub-district gravity treatment from this Serving cell to the described sub-district of supporting by second wireless access technology by this travelling carriage, wherein said first reselection criteria comprises threshold value, described threshold value comprises that the ratio of every PN chip Secondary Common Pilot Channel energy that receives and the whole power spectrum densities that receive at described mobile portable antennas connector place adds the skew that is appended to described ratio by described travelling carriage, and described second reselection criteria comprises the RSCP threshold value, provide described skew and described RSCP threshold value by described Serving cell to described travelling carriage to described ratio, if wherein described travelling carriage is not supported described RSCP threshold value, then described skew does not append to described ratio.
7. method according to claim 6, wherein said Serving cell is service GERAN sub-district, described sub-district is the UTRAN sub-district, described first wireless access technology is a GSM EDGE Radio Access Network, and described second wireless access technology is that Universal Terrestrial Radio Access Network and described RSCP threshold value are UTRAN RSCP threshold values.
8. method according to claim 7 further comprises:
Determine described first and described second reselection criteria whether suitable for described UTRAN sub-district, and, if suitable, by the described UTRAN of described travelling carriage gravity treatment sub-district.
9. method according to claim 7, wherein said UTRAN RSCP threshold value comprises lagged value or uses the power capability of this travelling carriage to be defined.
10. travelling carriage comprises:
Reception/transmission/processing module, the threshold signal in response to the RSCP applicable threshold of the former sub-district of having indicated free second wireless access technology to support is used to provide the threshold signal that is received of having indicated described RSCP applicable threshold; And
Cell reselection block, in response to the described described threshold signal that receives of having indicated described RSCP applicable threshold, be used to set up the reselection criteria that is used for from the sub-district that the Serving cell gravity treatment supported by first wireless access technology is supported by described second wireless access technology, wherein said reselection criteria comprises at least one threshold value, and described threshold value comprises that described RSCP applicable threshold adds by described cell reselection block and uses the defined skew that settles the standard in advance.
11. travelling carriage according to claim 10, wherein said Serving cell is service GERAN sub-district, described sub-district is the UTRAN sub-district, sub-district before described is last UTRAN sub-district, described first wireless access technology is a GSM EDGE Radio Access Network, and described second wireless access technology is that Universal Terrestrial Radio Access Network and described RSCP applicable threshold are the UTRANRSCP applicable threshold.
12. being configured to, travelling carriage according to claim 11, wherein said cell reselection block determine whether described reselection criteria is suitable for described UTRAN sub-district, and, if suitable, the described UTRAN of gravity treatment sub-district.
13. travelling carriage according to claim 11, wherein said skew comprise lagged value or use the power capability of described travelling carriage to be defined.
14. travelling carriage according to claim 11, wherein said travelling carriage comprises:
Memory is used to store described UTRAN RSCP applicable threshold.
15. a travelling carriage comprises:
Reception/transmission/processing module, signal in response to the Serving cell that comes free first wireless access technology to support, described signal has been indicated the skew of energy with the ratio of the whole power spectrum densities that receive at described mobile portable antennas connector place of RSCP threshold value and the reception of every PN chip Secondary Common Pilot Channel, is used to provide the signal that is received of the described skew of having indicated described RSCP threshold value and described ratio; And
Cell reselection block, the described signal that receives in response to the described skew of having indicated described RSCP threshold value and described ratio, be used to set up first and second reselection criteria that are used for from the sub-district that described Serving cell gravity treatment is supported by second wireless access technology, wherein said first reselection criteria comprises threshold value, described threshold value comprises that described ratio adds the skew that appends to described ratio, if wherein described travelling carriage is not supported described RSCP threshold value, then described skew does not append to described ratio, and described second reselection criteria comprises described RSCP threshold value.
16. travelling carriage according to claim 15, wherein said Serving cell is service GERAN sub-district, described sub-district is the UTRAN sub-district, described first wireless access technology is a GSM EDGE Radio Access Network, described second wireless access technology is a Universal Terrestrial Radio Access Network, described RSCP threshold value is a UTRAN RSCP threshold value, and described signal is that GERAN signal and described received signal are the GERAN signals.
17. being configured to, travelling carriage according to claim 16, wherein said cell reselection block determine whether described first and second reselection criteria are suitable for described UTRAN sub-district, and, if they are suitable, the described UTRAN of gravity treatment sub-district.
18. travelling carriage according to claim 16, wherein said UTRAN RSCP threshold value comprises lagged value or uses the power capability of described travelling carriage to be defined.
19. travelling carriage according to claim 16, wherein said travelling carriage comprises:
Memory is used to store described UTRAN RSCP threshold value, described ratio and described skew.
20. the system of the sub-district gravity treatment of use from GSM EDGE Radio Access Network (GERAN) to Universal Terrestrial Radio Access Network (UTRAN) comprises:
Last UTRAN sub-district is supported by Universal Terrestrial Radio Access Network, is used to provide the threshold signal of having indicated UTRAN RSCP applicable threshold;
Service GERAN sub-district is supported by GSM EDGE Radio Access Network;
The UTRAN sub-district is supported by Universal Terrestrial Radio Access Network; And
Travelling carriage, in response to the threshold signal of having indicated UTRAN RSCP applicable threshold, be used to set up reselection criteria in order to from the described UTRAN of described service GERAN sub-district gravity treatment sub-district, wherein said reselection criteria comprises at least one threshold value, and described threshold value has comprised that described UTRANRSCP applicable threshold adds by described travelling carriage and used the defined skew that settles the standard in advance.
21. system according to claim 20, wherein said travelling carriage is configured to determines that described reselection criteria is suitable for described UTRAN sub-district, and, if they are suitable, the described UTRAN of gravity treatment sub-district.
22. the system of the sub-district gravity treatment of use from GSM EDGE Radio Access Network (GERAN) to Universal Terrestrial Radio Access Network (UTRAN) comprises:
The UTRAN sub-district is supported by Universal Terrestrial Radio Access Network;
Service GERAN sub-district is supported by GSM EDGE Radio Access Network, is used to provide the GERAN signal; And
Travelling carriage, in response to the GERAN signal, described signal has been indicated the skew of energy with the ratio of the whole power spectrum densities that receive at described mobile portable antennas connector place of UTRAN RSCP threshold value and the reception of every PN chip Secondary Common Pilot Channel, be used to set up first and second reselection criteria in order to from the described UTRAN of described service GERAN sub-district gravity treatment sub-district, wherein said first reselection criteria comprises threshold value, described threshold value comprises that described ratio adds the skew that is appended to described ratio by described travelling carriage, and described second reselection criteria comprises UTRAN RSCP threshold value, if wherein described travelling carriage is not supported described RSCP threshold value, then described skew does not append to described ratio.
23. travelling carriage according to claim 11, wherein integrated circuit comprises described cell reselection block and described reception/transmission/processing module.
24. travelling carriage according to claim 15, wherein integrated circuit comprises described cell reselection block and described reception/transmission/processing module.
25. system according to claim 22, wherein said travelling carriage is configured to determines whether described reselection criteria is suitable for described UTRAN sub-district, and, if suitable, the described UTRAN of gravity treatment sub-district.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57863904P | 2004-06-10 | 2004-06-10 | |
| US60/578,639 | 2004-06-10 | ||
| US11/129,673 US7529560B2 (en) | 2004-06-10 | 2005-05-13 | Intersystem cell reselection from GERAN to UTRAN |
| US11/129,673 | 2005-05-13 | ||
| PCT/IB2005/001561 WO2005122621A1 (en) | 2004-06-10 | 2005-06-02 | Improving intersystem cell reselection from geran to utran |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1965605A CN1965605A (en) | 2007-05-16 |
| CN1965605B true CN1965605B (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005800189192A Expired - Lifetime CN1965605B (en) | 2004-06-10 | 2005-06-02 | Improving intersystem cell reselection from GERAN to UTRAN |
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| CN (1) | CN1965605B (en) |
| ZA (1) | ZA200700196B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101400093B (en) * | 2007-09-24 | 2011-11-16 | 华为技术有限公司 | Method and system for distributing interRAT-offset |
| CN101466132B (en) * | 2007-12-20 | 2010-07-21 | 大唐移动通信设备有限公司 | User change cell access method and system in high-speed environment |
| CN101557619B (en) | 2008-04-09 | 2011-06-22 | 华为技术有限公司 | Cell reselection method, terminal and system |
| RU2477932C2 (en) | 2008-04-28 | 2013-03-20 | Нокиа Корпорейшн | Method and system for inter-frequency or inter-system re-selection of cell |
| CN101742417B (en) * | 2008-11-19 | 2012-11-07 | 华为技术有限公司 | Method, device and system for acquiring cell identifier of special system |
| CN101932081B (en) * | 2009-06-19 | 2015-04-08 | 华为技术有限公司 | Method, device and system for reading system information of inter-system cells |
| KR101496386B1 (en) * | 2010-11-30 | 2015-02-26 | 블랙베리 리미티드 | Cell re-selection in a cellular telecommunications network |
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|---|---|---|---|---|
| CN1430357A (en) * | 2001-12-29 | 2003-07-16 | 深圳市中兴通讯股份有限公司上海第二研究所 | Soft switching method in wideband CDMA system |
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2000
- 2000-01-08 ZA ZA200700196A patent/ZA200700196B/en unknown
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- 2005-06-02 CN CN2005800189192A patent/CN1965605B/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1430357A (en) * | 2001-12-29 | 2003-07-16 | 深圳市中兴通讯股份有限公司上海第二研究所 | Soft switching method in wideband CDMA system |
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| Title |
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| TSG-RAN Working Group 2.Cell Selection and Cell Reselection Criteria.TSGR2#6(99)808.1999,1-9. * |
Also Published As
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| ZA200700196B (en) | 2008-05-28 |
| CN1965605A (en) | 2007-05-16 |
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