CN101179822B - Method, device and system for implementing soft switch - Google Patents
Method, device and system for implementing soft switch Download PDFInfo
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- CN101179822B CN101179822B CN200610114345A CN200610114345A CN101179822B CN 101179822 B CN101179822 B CN 101179822B CN 200610114345 A CN200610114345 A CN 200610114345A CN 200610114345 A CN200610114345 A CN 200610114345A CN 101179822 B CN101179822 B CN 101179822B
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Abstract
The invention relates to a soft-switch method, device and system realized in a wireless communication system, the method includes the following steps: service cell group messages are reported to a network side by a mobile terminal, and the service cell messages with the best signal quality in the service cell messages are reported to the network side by the mobile terminal. After the service cell messages and the service cell messages with the best signal quality are received by the network side, the service cell messages with the best signal quality carry out a transmission of an uplink and downlink channel allocation messages. All the cells in the service cell group carry out a transmission of the downlink service data and a receiving and a combination of the uplink service data. Thereby, unnecessary allocation cost is reduced, and process burdens of the mobile terminal are also reduced, and service qualities of the mobile terminal are improved.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of method, Apparatus and system of in wireless communication system, realizing soft handover.
Background technology
Research and development to wireless communication system is one of focus of the present communication technology.In wireless communication system, a kind of inevitable demand is: portable terminal is moving between the network that uses same wireless technology and is moving between the network of use different radio technology.Switching is the basic skills that solves various mobility demands.
Character according to switching generally is divided into soft handover and direct-cut operation to switching.Soft handover is to connect earlier the changing method that afterwards disconnects, and promptly first the and target BS of portable terminal is set up and got in touch, and then disconnection and former base station a kind of changing method of getting in touch; Direct-cut operation is that elder generation disconnects latter linked changing method, i.e. portable terminal disconnection is earlier got in touch with former base station, and then sets up a kind of changing method of contact with target BS.
According to the difference of each communication system, the switching mode of employing also has difference.CDMA2000 1x (first generation CDMA 2000, be one of 3G (Third Generation) Moblie standard technique, be responsible for formulating standard by 3G (Third Generation) Moblie collaborative project tissue 2) the system forward link adopts the mode of code division multiplexing, and its handoff technique that adopts is the traditional soft handoff technique.Adopt the code division multiplexing mode to compare with CDMA2000 1x system forward link, 1xEV-DO (first generation is only supported Packet data service evolution) system forward link mainly adopts time division multiplexing mode.In order further to improve the resource utilization of 1xEV-DO system, 1xEV-DO system forward link employing virtual soft technology generation has been replaced the traditional soft handoff technique in the CDMA2000 1x system.
Only there is a data passage simultaneously in the forward link of virtual soft technology, and may there be a plurality of data channel in the forward link of traditional soft handoff technique simultaneously, so the 1xEV-DO system adopts forward direction virtual soft technology to eliminate the additional system expense that the traditional soft handoff technique in the CDMA2000 1x system produces.
But the virtual soft technology has increased the processing burden of network side in the overhead that minimizing traditional soft handoff technique brings.This is because for the former sub-district and the Serving cell that are in the virtual soft state, network side all needs to send data to them, thereby has increased the data backup demand of switching cell, has also increased the possibility that sends repetition and redundant data.
In OFDMA (inserting based on orthogonal frequency division multiplexing multiple access) system, forward link mainly adopts the time-division to add the frequency division multiplexing mode.In order to solve the mobility problem of portable terminal, improve the resource utilization of forward link, in the OFDMA system, adopted FCS (fast cell selection) technology mostly.
Specifically, fast cell selects the principle of technology to be: in each time slot (frame), portable terminal carries out signal quality measured to all sub-districts in the Active Set of sub-district, carry out the signal quality measured of sub-district such as the mode that can select the signal to noise ratio of all pilot tones in the Active Set of modal continuous measurement sub-district, with the top-quality sub-district of selective channel therefrom as Serving cell.When adopting fast cell to select technology, the detailed process that switch the sub-district is: portable terminal is at first told the sign of its Serving cell of choosing of sub-district in the Active Set of sub-district by up signaling, cell identification in the Active Set of sub-district goes out this up signaling then, then selected sub-district then becomes the Serving cell of portable terminal, and former Serving cell then stops data and sends.In the whole data transmission procedure of portable terminal and sub-district, portable terminal only with the sub-district Active Set in a sub-district carry out transfer of data.
Described sub-district Active Set is the set of one group of sub-district connecting with current mobile terminal, and for current mobile terminal, these sub-districts all have the good channel quality.Sub-district in the Active Set of sub-district and the contact of portable terminal show as each sub-district and have set up with portable terminal all that signaling is connected or control connection, i.e. control information alternately between each sub-district and the portable terminal.The final sub-district of selecting, be called Serving cell or Serving cell group, the contact of they and portable terminal shows as has set up control connection simultaneously and has been connected with professional between each sub-district and the portable terminal, be not only control information alternately between each sub-district and the portable terminal, more can interactive service data.Control information generally is meant state information, channel quality, solicited message and response message etc., and business datum then comprises network and sends to the downlink service data of portable terminal and the uplink business data that portable terminal sends to network.
As seen, fast cell selection technology is that portable terminal selects the best sub-district of channel quality in the Active Set of sub-district to transmit for it provides data apace, fast cell selects technology to be with the different of soft hand-off, although these sub-districts all belong to same sub-district Active Set, but at any time, have and have only a base station to communicate contact with AT (portable terminal), this has just reduced interference potentially, has improved power system capacity.
But, fast cell selects technology can only select a best sub-district and a portable terminal of channel quality to carry out descending and up data transmission at any one time, though effectively saved overhead, but portable terminal under the close situation of a plurality of Active Set cell channel quality is arranged for being in cell edge, the transfer of data that can not offer the best effect obtains maximum gain.
FCGS (fast cell divides the group selection technology) is the technology that combines soft hand-off and fast cell selection technology.In simple terms, carry out signal quality measured by portable terminal to all sub-districts in the Active Set of sub-district exactly, therefrom select the best sub-district of one group of signal quality as the Serving cell group fast, portable terminal is told the sign of its Serving cell group of choosing of sub-district in the Active Set of sub-district by up signaling, cell identification in the Active Set of sub-district goes out this up signaling, and one group of then selected sub-district becomes the Serving cell group of portable terminal.All sub-districts in this Serving cell group send identical data to portable terminal, and portable terminal can obtain descending soft handover gain by the data that merge from the Serving cell group; And thereby the signal that portable terminal sends also obtains up soft handover gain for all sub-districts receptions and the merging of Serving cell group.
Divide in the group selection technology at fast cell, replaced Serving cell in the fast cell selection technology with the Serving cell group, can regard the Serving cell group as a kind of expansion of Serving cell, promptly the Serving cell group also can comprise the situation of having only a Serving cell.When the residing wireless environment of portable terminal was fit to some Serving cells, system provided service with regard to this Serving cell of assignment to portable terminal; When the residing wireless environment of portable terminal was fit to some Serving cell groups, system provided service with regard to this Serving cell group of assignment for portable terminal.As seen, be provided with the advantage that the fast cell of Serving cell group divides the group selection technology both to possess fast cell selection technology, also overcome the shortcoming of fast cell selection technology, can bring better service quality and experience for the user.
Above-described traditional soft handoff technique is applicable to Circuit-switched wireless communication system, virtual soft technology and fast cell select to be used in the wireless communication system of packet switch, and fast cell divides the group selection technology can be applicable to the wireless communication system of circuit switching and packet switch simultaneously.
Specific implementation to existing a kind of FCGS technology is elaborated below.
In the wireless communication system of present packet switch, under the situation of using fast cell grouping handoff technique, portable terminal is at first to carrying out signal quality measured to all sub-districts in the Active Set of sub-district, select the best several sub-districts of signal strength signal intensity as the Serving cell group, then the signal quality indication of merging and the group number of this Serving cell group are reported network side by CQI (channel quality indication) channel, last network side determines the Serving cell collection of this Serving cell group as portable terminal according to the CQI report of portable terminal. at down direction, each sub-district of this Serving cell group issues the down channel assignment message respectively and sends identical data to portable terminal, and portable terminal reception and merging are from the data-signal of each sub-district of Serving cell group; At up direction, each sub-district of Serving cell group issues the up channel assignment message respectively, portable terminal sends upstream data according to the uplink channel resources that distributes to the Serving cell group, and each sub-district reception of Serving cell group and merging are from the data-signal of portable terminal.
Portable terminal divides into groups for all sub-districts in the current area Active Set according to comprising different sub-districts in the different groupings.Below by an example this group technology is described: suppose to comprise 4 sub-districts in the current sub-district Active Set of portable terminal, be respectively C1, C2, C3, C4, the full-size of the Serving cell group of system recommendations is 3 sub-districts, possible like this grouping just has: (C1), (C2), (C3), (C4), (C1, C2), (C1, C3), (C1, C4), (C2, C3), (C2, C4), (C3, C4), (C1, C2, C3), (C1, C2, C4), (C2, C3, C4), promptly one have 13 kinds of packet modes, that can organize for it is definite is numbered 0 to 12.
As seen, the advantage of fast cell has divided group selection technological synthesis fast cell selection technology and soft hand-off, but also corresponding network side and the portable terminal complexity in realization of having increased had higher requirement to the design of network side and portable terminal.
But, in existing FCGS technology, when portable terminal is determined a best Serving cell group and is reported to AT, because the channel quality of mobile terminal reporting is the channel quality that all sub-districts merge in this Serving cell group, so network side and do not know that the signal quality of which sub-district in this Serving cell group is best.Like this, when the decision of Serving cell group is portable terminal allocation of downlink or uplink channel resources, though these channel resources are identical, each sub-district of Serving cell group all must send corresponding downstream and up channel assignment message to portable terminal respectively.Simultaneously, owing to be in its scrambler difference separately of each sub-district of Serving cell group, the resource that its assignment message takies also has nothing in common with each other probably, can not be moved terminal and merge and receive so these comprise assignment message that identical content sends to portable terminal, portable terminal can only receive these assignment messages respectively.Obviously, the assignment message that each sub-district of Serving cell group has sent identical content respectively is a kind of waste of assignment message expense to portable terminal; Simultaneously, portable terminal need receive the assignment message from each sub-district of Serving cell group respectively, has also increased the unnecessary burden of portable terminal.
Thereby, how under the situation of implementing quick cell group handoff technique, give full play to the advantage of this technology, reach and improve Cell Edge User service quality and effectively utilize balance between the network side channel resource, be an open question still at present.
Summary of the invention
The invention provides a kind of method, Apparatus and system of realizing soft handover, in wireless communication system, under the situation that adopts fast cell grouping handoff technique, make portable terminal can also informing network side current service cell group in the channel quality information that reports current service cell group number and current wireless environment to network side in the best Serving cell of signal quality.Be responsible for carrying out descending and the transmission up channel assignment message by the best Serving cell of this signal quality again, the transmission of downlink service data and the reception and the merging of uplink business data are carried out in all sub-districts in the Serving cell group.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of method that realizes soft handover, comprising:
A, report Serving cell group information to network side, and the information of the Serving cell that signal quality in the Serving cell group is best reports network side by portable terminal;
B, network side are according to the information and executing handover operation of the best Serving cell of described Serving cell group information and signal quality, and the Serving cell best by described signal quality carries out the transmission of channel assignment message.
The invention provides a kind of portable terminal, comprising:
Signal quality best cell indication processing unit be used for reporting Serving cell group information report Serving cell group information process to network side to network side, and the information of the Serving cell that signal quality in the Serving cell group is best reports network side.
The invention provides a kind of system that realizes soft handover, comprise that at least one is provided with the portable terminal of signal quality best cell indication processing unit, described signal quality best cell indication processing unit, be used for reporting Serving cell group information process to network side, report Serving cell group information to network side, and the information of the Serving cell that signal quality in the Serving cell group is best reports network side, and
Switching treatmenting unit is arranged in network side, is used for the information and executing handover operation according to the best Serving cell of described Serving cell group information and signal quality, and the Serving cell best by described signal quality carries out the transmission of channel assignment message.
As seen from the above technical solution provided by the invention, the present invention adopts a kind of method that realizes soft handover, Apparatus and system, make network side after receiving the Serving cell group information that comprises the service cell information that signal quality is best of mobile terminal reporting, be responsible for carrying out descending and the transmission up channel assignment message by the best Serving cell of this signal quality, the transmission of downlink service data and the reception and the merging of uplink business data are carried out in all sub-districts in the Serving cell group, thereby reduced unnecessary allocation overhead, reduce the processing burden of portable terminal, improved the QoS (quality of service) of portable terminal.
Description of drawings
Fig. 1 is the schematic diagram of a specific embodiment of the present invention;
Fig. 2 is the system construction drawing of a specific embodiment of the present invention.
Embodiment
Core concept of the present invention is to report Serving cell group information by portable terminal to network side, and the information of the Serving cell that signal quality in the Serving cell group is best reports network side, again by the information and executing handover operation of network side according to the best Serving cell of described Serving cell group information and signal quality.
Described handover operation comprises: undertaken descending and the transmission up channel assignment message by the best Serving cell of signal quality, the transmission of downlink service data and the reception and the merging of uplink business data are carried out in all sub-districts in the Serving cell group.
Why carry out the transmission of assignment message by the best Serving cell of signal quality, be to merge reception owing to the assignment message from different districts can not be moved terminal, and the signal of the best Serving cell of this signal quality is best, so the signal quality of this Serving cell that portable terminal receives is just the highest, the decode possibility of this assignment message of success is also just the highest, thereby is only by the transmission that the best Serving cell of signal quality carries out assignment message.
The schematic diagram of a specific embodiment of the present invention comprises as shown in Figure 1:
Step 11: determine the concrete mode of using that the sub-district Active Set is divided into groups and indicate the best Serving cell of signal quality in the Serving cell group between network side and the portable terminal, thereby between network side and portable terminal to the composition of Serving cell group and the concrete meaning understanding of reaching an agreement;
Step 12: portable terminal divides into groups to the sub-district in the Active Set of sub-district, the best several cell set of signal in the current area Active Set of determining is become the service cell set, and indicate the best Serving cell of signal quality in the Serving cell group;
Step 13: portable terminal reports the Serving cell group information of the service cell information that comprises that signal quality is best and the channel quality information of current wireless communication environment to network side. and portable terminal reports network side to the Serving cell group information that comprises the service cell information that signal quality in the Serving cell group is best, network side is defined as Anchor cell (main plot) with the best sub-district of signal quality in the Serving cell group after receiving the information of mobile terminal reporting;
Step 14: network side is according to the information and executing handover operation of the best Serving cell of described Serving cell group information and signal quality.Described handover operation mainly comprises: the main plot is responsible for sending down channel assignment message, up channel assignment message and indicating the fast cell grouping to switch the resource allocating message of finishing to portable terminal, and the assignment message that all sub-districts send according to the main plot in the Serving cell group is prepared channel resource and finished the transmission of downlink service data and the reception merging of uplink business data.
The invention provides a kind of method, Apparatus and system of realizing soft handover,, will be described in detail the specific embodiment of the present invention below for ease of the understanding of the present invention.
Specific implementation method to embodiment provided by the invention describes below.
At first, to determining concrete use the sub-district Active Set is divided into groups and indicates the mode of the best Serving cell of signal quality in the Serving cell group to be elaborated between network side in the step 11 and the portable terminal.
Determine the concrete mode of using that the sub-district Active Set is divided into groups and indicate the best Serving cell of signal quality in the Serving cell group between network side and the portable terminal, thus between network side and portable terminal to the composition of Serving cell group and the concrete meaning understanding of reaching an agreement.Following two kinds of specific embodiments can be arranged in this embodiment:
First specific embodiment is determined a kind of described mode of concrete use by the agreement that sets in advance between network side and the portable terminal.
System illustrates in agreement how the sub-district Active Set divides into groups, owing to have only this a kind of mode, network side and portable terminal all adopt this group technology to carry out cell group and can not produce inconsistent and misunderstanding.Also owing to having only this a kind of mode, so need between network and portable terminal, not notify and transmit.
Second specific embodiment, network side are determined a kind of described mode of concrete use to the portable terminal issuing message.Described message can comprise all message that network side can issue to portable terminal, such as:
The concrete described mode of using of network side using system information broadcast network side and portable terminal; Perhaps,
Network side issues the described mode that sub-district Active Set assignment message indicates a kind of concrete use to portable terminal; Because system has stipulated the multiple mode that the sub-district Active Set is divided into groups and indicates the best Serving cell of signal quality in the Serving cell group in agreement, when the sub-district of portable terminal Active Set changes, network will issue the Active Set assignment message to portable terminal, therefore the Active Set cell information that comprises variation in the assignment message that issues can increase a field or expand the concrete cell group mode that an existing field indicates current network and portable terminal to use in this message; Perhaps,
Network side indicates a kind of described mode of concrete use in other message that issue to portable terminal.
Secondly, the portable terminal described in the specific embodiment of the present invention is divided into groups to the sub-district in the Active Set of sub-district and the method that indicates the best Serving cell of signal quality in the Serving cell group is elaborated.
Under the situation that adopts fast cell grouping handoff technique, portable terminal divides into groups to the sub-district in the Active Set of sub-district, the best several cell set of signal in the current area Active Set of determining are become the service cell set, and indicate the best Serving cell of signal quality in the Serving cell group.
Specifically, the grouping of sub-district in the sub-district Active Set is not only indicated to comprise which Serving cell in this grouping exactly, the signal quality that also indicates which Serving cell in these Serving cell groups is best.Following two kinds of specific embodiments can be arranged in this embodiment:
First specific embodiment is represented the best Serving cell of signal quality in the current service cell group with the sortord of each Serving cell of Serving cell group.
Described sortord specifically can comprise: represent the best Serving cell of signal quality in the current service cell group with first Serving cell in the Serving cell group; Perhaps, represent the best Serving cell of signal quality in the current service cell group with last Serving cell in the Serving cell group; Perhaps, represent the best Serving cell of signal quality in the current service cell group with the Serving cell that meets the ad-hoc location of certain logic in the Serving cell group.
Concrete principle is: suppose that a cell set comprises C1 and two sub-districts of C2, at sub-district C1 signal quality preferably or under the best situation of sub-district C2 signal quality, (C1, C2) is two different cell set with (C2, C1); The method of expression best quality sub-district is also a lot, modally comprises that first sub-district represents that the strongest sub-district of current area is represented in last sub-district in the strongest sub-district of current area group or the cell set in the cell set.That is: the current area group is represented during strong sub-district in first sub-district in adopting cell set,, represents with the packet mode of (C1, C2) preferably the time at the signal quality of sub-district C1,, represents with the packet mode of (C2, C1) preferably the time at the signal quality of sub-district C2; Current area is represented during strong sub-district in last sub-district in adopting cell set,, represents with the packet mode of (C2, C1) preferably the time at the signal quality of sub-district C1,, represents with the packet mode of (C1, C2) preferably the time at the signal quality of sub-district C2.
Illustrate that below by a specific embodiment first sub-district in the cell set represents the grouping of current area group signal quality best cell.Suppose to comprise in the current Active Set of portable terminal 4 sub-districts, be respectively C1, C2, C3, C4, the service groups full-size of system recommendations is 3 sub-districts, and possible like this grouping just has: (C1), (C2), (C3), (C4), (C1, C2), (C2, C1), (C1, C3), (C3, C1), (C1, C4), (C4, C1), (C2, C3), (C3, C2), (C2, C4), (C4, C2), (C3, C4), (C4, C3), (C1, C2, C3), (C2, C1, C3), (C3, C2, C1), (C1, C2, C4), (C2, C1, C4), (C4, C2, C1), (C2, C3, C4), (C3, C2, C4), (C4, C3, C2).Have 25 kinds of packet modes altogether, can determine group # for it is 0 to 24, and wherein, first sub-district in the cell set is the best sub-district of signal quality in the current area group.
Second specific embodiment represented the best Serving cell of signal quality in the current service cell group with the sign that can express the best Serving cell of signal quality in the Serving cell group.
Be specifically as follows: indicating signal quality best cell in the Serving cell group by certain logic, is N% sub-district in the cell set such as the best sub-district of signal quality, with the sub-district number relevant value of N for calculating according to certain logic; Perhaps, indicate signal quality best cell in the Serving cell group by certain channel processing method, handle by scrambled code or the spreading code corresponding such as the channel quality information that will report with certain Serving cell in the Serving cell group, thus the best Serving cell of expression channel quality.
The packet mode that other can indicate the best Serving cell of signal quality in the Serving cell group all can be used for present embodiment.
At last, report the concrete mode of the channel quality information of the Serving cell group information of the service cell information that comprises that signal quality is best and current wireless communication environment to be elaborated to portable terminal in the step 13 to network side.
Portable terminal group technology according to a preconcerted arrangement, become the best several cell set of signal in the current area Active Set of determining the service cell set to report network side, network side is defined as the main plot with the best sub-district of signal quality in the Serving cell group after receiving the information of mobile terminal reporting.
The information of the Serving cell that the signal quality that portable terminal reports to network side is best comprises:
When the best Serving cell of descending signal quality and the best Serving cell of quality of uplink signal are same sub-district, this service cell information of mobile terminal reporting; Be responsible for carrying out descending and the transmission up channel assignment message by this Serving cell; Perhaps,
When the best Serving cell of descending signal quality and the best Serving cell of quality of uplink signal are not same sub-district, at this moment, portable terminal both can report best service cell information of downlink signal quality and the best service cell information of quality of uplink signal respectively, also can report best service cell information of downlink signal quality and the best service cell information of quality of uplink signal simultaneously; When portable terminal when network side reports the best service cell information of the best service cell information of downlink signal quality and quality of uplink signal respectively, can adopt the different modes that reports with the best service cell information of quality of uplink signal to the best service cell information of downlink signal quality: wherein, the strongest Serving cell of downstream signal is responsible for the transmission of down channel assignment message, and the strongest Serving cell of upward signal is responsible for the transmission of up channel assignment message.
Portable terminal can report the Serving cell group information of the service cell information that comprises that signal quality is best and the channel quality information of current wireless communication environment by its up channel.
Described up channel is specifically as follows the channel quality indicating channel or indicates the reverse resource request channel of reverse resource request information or portable terminal sends other up channels from information to network side.
Reporting the Serving cell group information of the service cell information that comprises that signal quality is best and the channel quality information of current wireless communication environment with portable terminal by the channel quality indicating channel below is that a specific embodiment comes present embodiment is elaborated.
Portable terminal reports the method for Serving cell group information of the information of the Serving cell that comprises that signal quality is best specifically to comprise by the channel quality indicating channel:
The part of the described Serving cell group information that comprises the service cell information that signal quality is best as the channel quality indication report content is included in the channel quality indication report, reports the channel quality indication report that comprises described information by the channel quality indicating channel again; Perhaps,
Use the scrambler sequence scrambling corresponding channel quality indication report corresponding, report by the channel quality indicating channel again to comprise the described channel quality indication report that comprises the Serving cell group information of the service cell information that signal quality is best with the Serving cell group number; Perhaps,
Use the spread spectrum code sequence spread spectrum corresponding channel quality indication report corresponding, report by the channel quality indicating channel again to comprise the described channel quality indication report that comprises the Serving cell group information of the service cell information that signal quality is best with the Serving cell group number.
When by the corresponding channel quality indication report of scrambler sequence scrambling or by the corresponding channel quality indication report of spread spectrum code sequence spread spectrum, the packet mode that sub-district in the Active Set of sub-district is indicated the best Serving cell of signal quality in the Serving cell group according to described portable terminal is determined the group id of all cell set in the Active Set of sub-district, again each group id is all designed a scrambler sequence or spread spectrum code sequence.
Portable terminal reports the method for the channel quality information of indication current wireless environment specifically to comprise by the channel quality indicating channel:
Report the channel quality indication report that all Serving cells merge in the current service cell group that comprises the portable terminal suggestion by the channel quality indicating channel; Perhaps,
Report by the channel quality indicating channel and to comprise in the current service cell group channel quality indication report of strong Serving cell; Perhaps,
Report the channel quality indication report that comprises other certain Serving cells in the current service cell group by the channel quality indicating channel; Perhaps,
Report the channel quality indication report that comprises certain Serving cell in the current area Active Set by the channel quality indicating channel.
Lifting a specific embodiment below indicates the method for the channel quality information of current wireless environment to describe at portable terminal. suppose that Active Set the inside, sub-district comprises 6 sub-districts, be respectively that sub-district C1 is to sub-district C6, the Serving cell group comprises sub-district C2 and C3, C2 is the strongest sub-district, portable terminal can reporting subdistrict C2 and the merging channel quality indication of C3 like this, also can report the channel quality indication of the strongest sub-district C2, also can report the channel quality indication of C3, also can the reporting subdistrict Active Set in the channel quality indication of C1 or C4 or C5 or C6.
In this specific embodiment, portable terminal can take following dual mode to pass through the channel quality indicating channel to the network side uploading channel quality indication report.
First specific embodiment, the channel quality indicating channel comes uploading channel quality indication report by the content of expanding existing channel quality indication report.Table 1 is the design signal table of the content of the existing CQI report of a kind of typical expansion.
Table 1
| Field | Length (bit) |
| FormatType, the Format Type of expression CQI report | 1 |
| CQIValueSISO, the expression channel quality indicated value | 4 |
| BestSector, expression signal quality best cell index | 2 |
| DesiredGroupID, the cell group identification of expression suggestion | 4 |
Second specific embodiment, the channel quality indicating channel comes uploading channel quality indication report by the new form with original channel quality indication report format compatible.Table 2 is a kind of CQI reporting format design signal tables that typically report the Serving cell group.
Table 2
| Field | Length (bit) |
| FormatType, the Format Type of expression CQI report | 1 |
| CQIValueSISO, the expression channel quality indicated value | 4 |
| DesiredGroupID, the cell group identification of expression suggestion | 5 |
The CQI reporting format that reports the Serving cell group shown in table 1 and the table 2 is a kind of in the common message format only, and the design of other and original CQI reporting format compatibility can both satisfy requirement of the present invention.
Such as: shown in the table 3 and new reporting format compatibility mode original CQI reporting format compatibility.
Table 3
| Field | Length (bit) |
| FormatType, the Format Type of expression CQI report | 1 |
| CQIValueSISO, the expression channel quality indicated value | 4 |
It should be noted that, report content does not comprise Serving cell group and best cell information, carries Serving cell group and the best service cell information of signal but adopt scrambled code corresponding with Serving cell group and best cell or spreading code to carry out respective handling by signal processing technology to this report.
Specific implementation system to specific embodiments provided by the invention describes below.
The system construction drawing of a specific embodiment of the present invention comprises as shown in Figure 2:
At least one is provided with the portable terminal of signal quality best cell indication processing unit, and,
Switching treatmenting unit is arranged in network side, is used for the information and executing handover operation according to the best Serving cell of Serving cell group information and signal quality.
Described handover operation comprises: undertaken descending and the transmission up channel assignment message by the best Serving cell of signal quality, the transmission of downlink service data and the reception and the merging of uplink business data are carried out in all sub-districts in the Serving cell group.
Will comprise at least one described portable terminal in the system, described portable terminal comprises:
Signal quality best cell indication processing unit be used for reporting Serving cell group information in the process that reports Serving cell group information to network side to network side, and the information of the Serving cell that signal quality in the Serving cell group is best reports network side.
Wherein, described signal quality best cell indication processing unit comprises:
The cell group unit is used for being divided into groups in the sub-district of sub-district Active Set, indicates the best Serving cell of signal quality in the Serving cell group simultaneously;
Group result reports the unit, is used for portable terminal and reports the Serving cell group that comprises the best Serving cell of indication Serving cell group signal quality to network side.
The system of the described realization soft handover of the embodiment of the invention can also comprise with lower unit:
Cell group mode determining unit is arranged in network side and portable terminal, is used for determining between network side and the portable terminal to indicate the mode of the best Serving cell of Serving cell group signal quality.
When described cell group mode determining unit was positioned at network side, described cell group mode determining unit also comprised:
The cell group mode issues the unit, is arranged in network side, is used for indicating to the portable terminal issuing message time mode of the best Serving cell of a kind of concrete indication Serving cell group signal quality.
The system of the described realization soft handover of the embodiment of the invention can also comprise with lower unit:
Serving cell group processing unit is arranged in the Serving cell group, is used for finishing the mutual of the network of handover operation process and control signaling between the portable terminal and business datum;
The Serving cell processing unit that signal quality is best is arranged in the best Serving cell of signal quality, is used for finishing the mutual of the network of handover operation process and the assignment message between the portable terminal.
The system of the described realization soft handover of the embodiment of the invention can also comprise with lower unit:
The Serving cell determining unit is arranged in network side, is used for determining the best Serving cell of Serving cell group signal quality.
In sum, the present invention relates to a kind of method, Apparatus and system of in wireless communication system, realizing soft handover, report Serving cell group information by portable terminal to network side, and the information of the Serving cell that signal quality in the Serving cell group is best reports network side by the channel quality indicating channel; After network side is received the information of the Serving cell that described Serving cell group information and signal quality are best, undertaken descending and the transmission up channel assignment message by the best Serving cell of signal quality, the transmission of downlink service data and the reception and the merging of uplink business data are carried out in all sub-districts in the Serving cell group, thereby reduced unnecessary allocation overhead, reduce the processing burden of portable terminal, improved the quality of service of portable terminal.
Need to prove, the method of realization soft handover provided by the invention, Apparatus and system are applicable to various wireless communication systems and are not limited only to packet switch or Circuit-switched wireless communication system, particularly adopt the resource centralized dispatching and the distribution system of OFDMA technology;
Simultaneously, the method for realization soft handover provided by the invention, Apparatus and system are not only applicable to the switching of down direction, are applicable to the switching of up direction yet;
Simultaneously, the composition that concrete soft-handoff groups is the Serving cell group can comprise the different districts of different base station, also can include only the different districts of a base station, specifically depends on the regulation of system and the complexity of enforcement; Promptly can support portable terminal at the common soft handover that belongs between a plurality of sub-districts, two or more base stations, also can support portable terminal belonging to a More Soft Handoff between the different districts of base station.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (22)
1. a method that realizes soft handover is characterized in that, comprising:
A, report Serving cell group information to network side, and the information of the Serving cell that signal quality in the Serving cell group is best reports network side by portable terminal;
B, network side are according to the information and executing handover operation of the best Serving cell of described Serving cell group information and signal quality, and the Serving cell best by described signal quality carries out the transmission of channel assignment message.
2. the method for claim 1 is characterized in that, the information of the Serving cell that described mobile terminal reporting signal quality is best comprises:
When the best Serving cell of descending signal quality and the best Serving cell of quality of uplink signal are same sub-district, this service cell information of mobile terminal reporting; Perhaps,
When the best Serving cell of descending signal quality and the best Serving cell of quality of uplink signal were not same sub-district, portable terminal reported best service cell information of downlink signal quality and the best service cell information of quality of uplink signal respectively; Perhaps,
When the best Serving cell of descending signal quality and the best Serving cell of quality of uplink signal were not same sub-district, portable terminal reported best service cell information of downlink signal quality and the best service cell information of quality of uplink signal simultaneously.
3. the method for claim 1 is characterized in that, also comprises before carrying out described steps A:
A1, portable terminal divide into groups to the sub-district in the Active Set of sub-district, the best several cell set of signal in the current area Active Set of determining are become the service cell set, and indicate the best Serving cell of signal quality in the Serving cell group.
4. method as claimed in claim 3 is characterized in that, also comprises before carrying out described steps A 1:
Determine the mode of the Serving cell that signal quality in the indication Serving cell group is best between A11, network side and the portable terminal.
5. method as claimed in claim 4 is characterized in that, described steps A 11 comprises:
Determine to determine between a kind of network side of concrete use and the portable terminal mode of the Serving cell that signal quality in the indication Serving cell group is best between network side and the portable terminal by the agreement that sets in advance; Perhaps,
Network side determines to determine between a kind of network side of concrete use and the portable terminal mode of the Serving cell that signal quality in the indication Serving cell group is best to the portable terminal issuing message.
6. method as claimed in claim 5 is characterized in that, described network side comprises to the message that portable terminal issues:
System broadcast message; Perhaps,
Sub-district Active Set assignment message; Perhaps,
Other message that network side issues to portable terminal.
7. as claim 3,4,5 or 6 described methods, it is characterized in that the mode of the best Serving cell of signal quality comprises in the described indication Serving cell group:
Represent the best Serving cell of signal quality in the current service cell group with the sortord of each Serving cell of Serving cell group; Perhaps,
Represent the best Serving cell of signal quality in the current service cell group with the sign that can express the best Serving cell of signal quality in the Serving cell group.
8. method as claimed in claim 7 is characterized in that, described sortord specifically comprises:
Represent the best Serving cell of signal quality in the current service cell group with first Serving cell in the Serving cell group; Perhaps,
Represent the best Serving cell of signal quality in the current service cell group with last Serving cell in the Serving cell group; Perhaps,
Represent the best Serving cell of signal quality in the current service cell group with the Serving cell that meets the ad-hoc location of certain logic in the Serving cell group.
9. method as claimed in claim 7 is characterized in that, described sign specifically comprises:
With the best Serving cell of signal quality in the certain logic indication Serving cell group; Perhaps,
With signal quality best cell in the channel processing method indication Serving cell group.
10. the method for claim 1 is characterized in that, described portable terminal comprises to the method for network side reporting information:
Portable terminal reports the Serving cell group information of the service cell information that comprises that signal quality is best and the channel quality information of current wireless communication environment by its up channel.
11. method as claimed in claim 10 is characterized in that, described up channel comprises:
The channel quality indicating channel; Perhaps,
Indicate the reverse resource request channel of reverse resource request information; Perhaps,
Portable terminal sends other up channels of information to network side.
12. method as claimed in claim 10 is characterized in that, described portable terminal reports the method for the Serving cell group information of the service cell information that comprises that signal quality is best specifically to comprise by the channel quality indicating channel:
The part of the described Serving cell group information that comprises the service cell information that signal quality is best as the channel quality indication report content is included in the channel quality indication report, reports the channel quality indication report that comprises described information by the channel quality indicating channel again; Perhaps,
Use the scrambler sequence scrambling corresponding channel quality indication report corresponding, report by the channel quality indicating channel again to comprise the described channel quality indication report that comprises the Serving cell group information of the service cell information that signal quality is best with the Serving cell group number; Perhaps,
Use the spread spectrum code sequence spread spectrum corresponding channel quality indication report corresponding, report by the channel quality indicating channel again to comprise the described channel quality indication report that comprises the Serving cell group information of the service cell information that signal quality is best with the Serving cell group number.
13. method as claimed in claim 10 is characterized in that, described portable terminal reports the method for the channel quality information of indication current wireless environment specifically to comprise by the channel quality indicating channel:
Report the channel quality indication report that all Serving cells merge in the current service cell group that comprises the portable terminal suggestion by the channel quality indicating channel; Perhaps,
Report by the channel quality indicating channel and to comprise in the current service cell group channel quality indication report of strong Serving cell; Perhaps,
Report the channel quality indication report that comprises other certain Serving cells in the current service cell group by the channel quality indicating channel; Perhaps,
Report the channel quality indication report that comprises certain Serving cell in the current area Active Set by the channel quality indicating channel.
14., it is characterized in that described portable terminal comprises by the concrete grammar of channel quality indicating channel uploading channel quality indication report as each described method of claim 10 to 13:
The channel quality indicating channel comes uploading channel quality indication report by the content of expanding existing channel quality indication report; Perhaps,
The channel quality indicating channel comes uploading channel quality indication report by the new form with original channel quality indication report format compatible.
15. the method for claim 1 is characterized in that, described handover operation comprises:
Utilize the best Serving cell of described signal quality to carry out the transmission of the descending and up channel assignment message in the handover operation process.
16. a portable terminal is characterized in that, comprising:
Signal quality best cell indication processing unit be used for reporting Serving cell group information report Serving cell group information process to network side to network side, and the information of the Serving cell that signal quality in the Serving cell group is best reports network side.
17. portable terminal as claimed in claim 16 is characterized in that, described signal quality best cell indication processing unit comprises:
The cell group unit is used for being divided into groups in the sub-district of sub-district Active Set, and indicates the best Serving cell of signal quality in the Serving cell group;
Group result reports the unit, is used for portable terminal and reports the Serving cell group that comprises the best Serving cell of indication Serving cell group signal quality to network side.
18. system that realizes soft handover, it is characterized in that, comprise that at least one is provided with the portable terminal of signal quality best cell indication processing unit, described signal quality best cell indication processing unit, be used for reporting Serving cell group information to network side, and the information of the Serving cell that signal quality in the Serving cell group is best reports network side report Serving cell group information process to network side, and
Switching treatmenting unit is arranged in network side, is used for the information and executing handover operation according to the best Serving cell of described Serving cell group information and signal quality, and the Serving cell best by described signal quality carries out the transmission of channel assignment message.
19. system as claimed in claim 18 is characterized in that, described system also comprises:
Cell group mode determining unit is arranged in network side and portable terminal, is used for determining between network side and the portable terminal to indicate the mode of the best Serving cell of Serving cell group signal quality.
20. system as claimed in claim 19 is characterized in that, the described cell group mode determining unit that is arranged in network side comprises:
The cell group mode issues the unit, is arranged in network side, is used for indicating to the portable terminal issuing message time mode of the best Serving cell of a kind of concrete indication Serving cell group signal quality.
21. system as claimed in claim 20 is characterized in that, described system also comprises:
The Serving cell determining unit is arranged in network side, is used for determining the best Serving cell of Serving cell group signal quality.
22., it is characterized in that described system also comprises as each described system of claim 18 to 21:
Serving cell group processing unit is arranged in the Serving cell group, is used for finishing the mutual of the network of handover operation process and control signaling between the portable terminal and business datum;
The Serving cell processing unit that signal quality is best is arranged in the best Serving cell of signal quality, is used for finishing the mutual of the network of handover operation process and the assignment message between the portable terminal.
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| CN200610114345A CN101179822B (en) | 2006-11-07 | 2006-11-07 | Method, device and system for implementing soft switch |
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| CN200610114345A CN101179822B (en) | 2006-11-07 | 2006-11-07 | Method, device and system for implementing soft switch |
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| CN101179822B true CN101179822B (en) | 2010-05-12 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI442794B (en) * | 2009-03-12 | 2014-06-21 | Interdigital Patent Holdings | Method and apparatus for performing component carrier-specific reconfiguration |
| CN101534534A (en) * | 2009-04-21 | 2009-09-16 | 华为技术有限公司 | A base station switch method and a switch processing device |
| CN102300250B (en) * | 2010-06-23 | 2015-03-11 | 电信科学技术研究院 | Method for reporting measurement report by UE (User Equipment) and main service cell reconfiguration method and system |
| WO2014101071A1 (en) * | 2012-12-27 | 2014-07-03 | 华为技术有限公司 | Switching method and device |
| CN104093157A (en) * | 2013-04-01 | 2014-10-08 | 中兴通讯股份有限公司 | Common cell cooperation processing method and system of macro base station and low power base station |
| CN105519170A (en) * | 2013-04-24 | 2016-04-20 | 华为技术有限公司 | uplink feedback method, device and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270746A (en) * | 1997-08-19 | 2000-10-18 | 诺基亚网络有限公司 | Information transmission in a telecommunications system |
| CN1710992A (en) * | 2005-08-12 | 2005-12-21 | 北京邮电大学 | Method for increasing downstream data rate of fan region and small region marginal customer |
-
2006
- 2006-11-07 CN CN200610114345A patent/CN101179822B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270746A (en) * | 1997-08-19 | 2000-10-18 | 诺基亚网络有限公司 | Information transmission in a telecommunications system |
| CN1710992A (en) * | 2005-08-12 | 2005-12-21 | 北京邮电大学 | Method for increasing downstream data rate of fan region and small region marginal customer |
Non-Patent Citations (5)
| Title |
|---|
| JP特开2004-72513A 2004.03.04 |
| 陶小峰，吴春丽，许晓东.一种广义分布式多小区架构－群小区.中兴通讯技术第12卷 第2期.2006,第12卷(第2期),6-9页. |
| 陶小峰,吴春丽,许晓东.一种广义分布式多小区架构-群小区.中兴通讯技术第12卷 第2期.2006,第12卷(第2期),6-9页. * |
| 陶小峰,戴佐俊,唐超,倪莉,张平.广义蜂窝网络结构及切换模式-群小区及群切换.电子学报vol.32 No.12A.2004,vol.32(No.12A),114-117页. * |
| 陶小峰，戴佐俊，唐超，倪莉，张平.广义蜂窝网络结构及切换模式－群小区及群切换.电子学报vol.32No.12A.2004 vol.32(No.12A) |
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