CN105636126B - A kind of switch determining method and device - Google Patents
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Abstract
A kind of switch determining method of present invention offer and device, are related to wireless communication technology field.This method includes：When first community signal and/or second community signal reach basic switching condition, the spectrum efficiency of the first community and the second community is obtained respectively；Wherein, the second community is the current serving cell of terminal, and the first community is the neighboring community of the second community；Compare the spectrum efficiency of the first community and second community, when the spectrum efficiency of the first community is more than the spectrum efficiency of the second community, according to the spectrum efficiency of the first community, prediction terminal switches to the service rate of the first community after the first community；When the service rate of the first community is greater than or equal to service rate expection threshold value, switching is executed, terminal is switched into the first community.The solution of the present invention solves the otherness that the prior art cannot achieve spectrum efficiency, thus the problem of cannot efficiently using frequency resource.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a handover decision method and apparatus.
Background
With the development of communication technology, the communication system has been diversified, such as: a GSM (Global System for mobile Communication) System, a TD-SCDMA (Time Division-synchronous code Division Multiple Access) System, and an LTE (Long term evolution) System. In order to improve user experience, when a mobile terminal is located in different cells at the same time, an optimal cell is often selected through inter-system handover or intra-system handover.
The existing inter-system handover mainly measures the quality of a beacon channel of each system, but a handover decision is made by using signal strength, although the basic requirement of service continuity can be guaranteed, the difference of spectrum efficiency of each system cannot be realized, so that frequency resources cannot be effectively utilized, for example, for voice-based services, the carrying efficiency of a GSM system is about 0.0023 mierl/Hz (considering 3 × 4 frequency multiplexing) and is constant in a coverage area, the downlink average efficiency of a TD-LTE system is about 0.0033 mierl/Hz (same frequency multiplexing, 20MHz carrier), but at a cell boundary, the TD-LTE system may be reduced to 0.0011 mierl/Hz, which is lower than the GSM level.
Disclosure of Invention
The invention aims to provide a switching judgment method and a switching judgment device, which increase the switching judgment of the frequency spectrum efficiency on the basis of the switching condition, ensure the basic requirement of the service continuity, realize the difference of the frequency spectrum efficiency and effectively utilize the frequency spectrum resources.
To achieve the above object, an embodiment of the present invention provides a handover decision method, including:
respectively acquiring the frequency spectrum efficiency of a first cell and the frequency spectrum efficiency of a second cell when a first cell signal and/or a second cell signal reach a basic switching condition; the second cell is a current service cell of a terminal, and the first cell is an adjacent cell of the second cell;
comparing the spectral efficiencies of the first cell and the second cell, and predicting the service rate of the first cell after the terminal is switched to the first cell according to the spectral efficiency of the first cell when the spectral efficiency of the first cell is greater than the spectral efficiency of the second cell;
and when the service rate of the first cell is greater than or equal to the expected threshold of the service rate, executing switching and switching the terminal to the first cell.
The obtaining the spectrum efficiencies of the second cell and the first cell respectively includes:
obtaining a system type of a current cell; the current cell is a first cell and a second cell;
and searching a parameter table corresponding to the current cell according to the system type of the current cell to obtain the spectrum efficiency of the current cell.
The spectrum efficiency comprises voice service spectrum efficiency and data service spectrum efficiency;
according to the system type of the current cell, searching a parameter table corresponding to the current cell to obtain the spectrum efficiency of the current cell, comprising:
according to the system type of the current cell, searching a parameter table corresponding to the current cell, and acquiring channel signal-to-noise ratio statistical data of the data service in the parameter table to obtain the frequency spectrum efficiency of the data service of the current cell;
according to the system type of the current cell, searching a parameter table corresponding to the current cell, and acquiring the channel signal-to-noise ratio statistical data of the voice service in the parameter table to obtain the frequency spectrum efficiency of the voice service of the current cell.
The method comprises the following steps of searching a parameter table corresponding to a current cell according to the system type of the current cell, acquiring channel signal-to-noise ratio statistical data of data service in the parameter table, and acquiring the frequency spectrum efficiency of the data service of the current cell, wherein the method comprises the following steps:
acquiring channel signal-to-noise ratio statistical data of the data service in the parameter table, and according to a formula:
obtaining the frequency spectrum efficiency of the data service; wherein,
RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; THPjThe throughput of the jth data service sampling point equal to the signal-to-noise ratio of the current channel in the channel signal-to-noise ratio statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the data service sampling points equal to the signal-to-noise ratio of the current channel; CB (CB)jAnd the frequency bandwidth of the jth data service sampling point which is equal to the current channel signal-to-noise ratio in the channel signal-to-noise ratio statistical data is obtained.
Wherein the system types include: a global system for mobile communication (GSM) system, a time division synchronous code division multiple access (TD-SCDMA) system and a Long Term Evolution (LTE) system;
according to the system type of the current cell, searching a parameter table corresponding to the current cell, acquiring the channel signal-to-noise ratio statistical data of the voice service in the parameter table, and acquiring the frequency spectrum efficiency of the voice service of the current cell, wherein the method comprises the following steps:
if the current cell is a GSM system or a TD-SCDMA system, searching a parameter table corresponding to the current cell, and directly obtaining the frequency spectrum efficiency of the voice service corresponding to the current cell;
if the current cell is an LTE system, searching a parameter table corresponding to the current cell, acquiring channel signal-to-noise ratio statistical data of voice service in the parameter table, namely reference signal receiving quality statistical data, and according to a formula:
obtaining the frequency spectrum efficiency of the voice service; wherein, the RAT-SE' is the data service spectrum efficiency corresponding to the current reference signal receiving quality; TTIDLsubframe/aThe number of downlink subframes in a preset time period a is set; RBsjThe number of data packets used in each transmission time interval corresponding to the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the voice service sampling points equal to the current reference signal receiving quality; TTIjThe number of transmission time intervals correspondingly used by the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data; mu.sDLIs the downlink resource proportion.
Comparing the spectral efficiencies of the first cell and the second cell, and predicting the service rate of the first cell after the terminal is switched to the first cell according to the spectral efficiency of the first cell when the spectral efficiency of the first cell is greater than the spectral efficiency of the second cell, includes:
comparing the voice service spectrum efficiency of the first cell with the voice service spectrum efficiency of the second cell, and comparing the data service spectrum efficiency of the first cell with the data service spectrum efficiency of the second cell;
when the voice service spectrum efficiency of the first cell is greater than the voice service spectrum efficiency of the second cell and the data service spectrum efficiency of the first cell is greater than the data service spectrum efficiency of the second cell, according to a formula:
obtaining the service rate of a first cell after the terminal is switched to the first cell by RAT-THR (RAT-THR) ═ RAT-SE (maximum Rate-bandwidth resource) multiplied by BW; wherein,
RAT-THR is the service rate of a first cell corresponding to the signal-to-noise ratio of the current channel; RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; BW is the channel bandwidth.
To achieve the above object, an embodiment of the present invention further provides a handover decision apparatus, including:
an obtaining module, configured to obtain spectral efficiencies of a first cell and a second cell respectively when a first cell signal and/or a second cell signal reach a basic handover condition; the second cell is a current service cell of a terminal, and the first cell is an adjacent cell of the second cell;
the processing module is used for comparing the spectral efficiencies of the first cell and the second cell, and predicting the service rate of the first cell after the terminal is switched to the first cell according to the spectral efficiency of the first cell when the spectral efficiency of the first cell is greater than the spectral efficiency of the second cell;
and the switching execution module is used for executing switching and switching the terminal to the first cell when the service rate of the first cell is greater than or equal to the expected threshold of the service rate.
Wherein the acquisition module comprises:
the first obtaining submodule is used for obtaining the system type of the current cell; the current cell is a first cell and a second cell;
and the second obtaining submodule is used for searching a parameter table corresponding to the current cell according to the system type of the current cell to obtain the frequency spectrum efficiency of the current cell.
The spectrum efficiency comprises voice service spectrum efficiency and data service spectrum efficiency;
the second acquisition sub-module includes:
the first acquisition unit is used for searching a parameter table corresponding to the current cell according to the system type of the current cell, acquiring channel signal-to-noise ratio statistical data of the data service in the parameter table and obtaining the frequency spectrum efficiency of the data service of the current cell;
and the second acquisition unit is used for searching a parameter table corresponding to the current cell according to the system type of the current cell, acquiring the channel signal-to-noise ratio statistical data of the voice service in the parameter table and obtaining the frequency spectrum efficiency of the voice service of the current cell.
Wherein, the first acquisition unit includes:
a first obtaining subunit, configured to obtain channel signal-to-noise ratio statistical data of the data service in the parameter table, according to a formula:
obtaining the frequency spectrum efficiency of the data service; wherein,
RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; THPjThe throughput of the jth data service sampling point equal to the signal-to-noise ratio of the current channel in the channel signal-to-noise ratio statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the data service sampling points equal to the signal-to-noise ratio of the current channel; CB (CB)jAnd the frequency bandwidth of the jth data service sampling point which is equal to the current channel signal-to-noise ratio in the channel signal-to-noise ratio statistical data is obtained.
Wherein the system types include: a global system for mobile communication (GSM) system, a time division synchronous code division multiple access (TD-SCDMA) system and a Long Term Evolution (LTE) system;
the second acquisition unit includes:
the second acquiring subunit is used for searching a parameter table corresponding to the current cell when the current cell is a GSM system or a TD-SCDMA system, and directly acquiring the frequency spectrum efficiency of the voice service corresponding to the current cell;
a third obtaining subunit, configured to, when the current cell is an LTE system, search a parameter table corresponding to the current cell, obtain channel signal-to-noise ratio statistical data of a voice service in the parameter table, that is, reference signal reception quality statistical data, and according to a formula:
obtaining the frequency spectrum efficiency of the voice service; wherein, the RAT-SE' is the data service spectrum efficiency corresponding to the current reference signal receiving quality; TTIDLsubframe/aThe number of downlink subframes in a preset time period a is set; RBsjThe number of data packets used in each transmission time interval corresponding to the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the voice service sampling points equal to the current reference signal receiving quality; TTIjThe number of transmission time intervals correspondingly used by the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data; mu.sDLIs the downlink resource proportion.
Wherein the processing module comprises:
the first processing submodule is used for comparing the voice service spectrum efficiency of the first cell with the voice service spectrum efficiency of the second cell, and comparing the data service spectrum efficiency of the first cell with the data service spectrum efficiency of the second cell;
a second processing submodule, configured to, when the spectrum efficiency of the voice service in the first cell is greater than the spectrum efficiency of the voice service in the second cell and the spectrum efficiency of the data service in the first cell is greater than the spectrum efficiency of the data service in the second cell, according to a formula:
obtaining the service rate of a first cell after the terminal is switched to the first cell by RAT-THR (RAT-THR) ═ RAT-SE (maximum Rate-bandwidth resource) multiplied by BW; wherein,
RAT-THR is the service rate of a first cell corresponding to the signal-to-noise ratio of the current channel; RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; BW is the channel bandwidth.
The technical scheme of the invention has the following beneficial effects:
the switching judgment method of the embodiment of the invention judges whether a basic switching condition is reached by acquiring a first cell signal and a second cell signal, respectively acquires the frequency spectrum efficiency of the current service cell of the terminal, namely the second cell, and the frequency spectrum efficiency of the adjacent cell of the second cell, namely the first cell after the basic switching condition is reached, compares the frequency spectrum efficiencies of the first cell and the second cell, predicts the service rate of the first cell after the terminal is switched to the first cell when the frequency spectrum efficiency of the first cell is greater than the frequency spectrum efficiency of the second cell, and can execute switching and switch the terminal to the first cell when the service rate of the first cell is greater than or equal to the expected threshold value of the service rate. As the switching judgment of the frequency spectrum efficiency is added on the basis of achieving the basic switching condition, the basic requirement of the service continuity is ensured, the difference of the frequency spectrum efficiency can be realized, and the frequency spectrum resource is effectively utilized.
Drawings
Fig. 1 is a flow chart illustrating the steps of a handover decision method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a handover decision device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Aiming at the problems that the existing switching judgment cannot effectively utilize frequency resources because the main measurement quantity is the quality of a beacon channel and the difference of the frequency spectrum efficiency cannot be realized, the invention provides a switching judgment method, which increases the switching judgment of the frequency spectrum efficiency on the basis of the switching condition, thereby not only ensuring the basic requirement of service continuity, but also realizing the difference of the frequency spectrum efficiency and effectively utilizing the frequency spectrum resources.
As shown in fig. 1, a handover decision method according to an embodiment of the present invention includes:
step 11, when a first cell signal and/or a second cell signal reach a basic switching condition, respectively obtaining the spectrum efficiency of the first cell and the second cell; the second cell is a current service cell of a terminal, and the first cell is an adjacent cell of the second cell;
step 12, comparing the spectral efficiencies of the first cell and the second cell, and predicting the service rate of the first cell after the terminal is switched to the first cell according to the spectral efficiency of the first cell when the spectral efficiency of the first cell is greater than the spectral efficiency of the second cell;
and step 13, when the service rate of the first cell is greater than or equal to the expected threshold of the service rate, executing switching and switching the terminal to the first cell.
When switching is carried out between systems, the basic switching condition is an A1/A2+ B2 event, wherein the A1 event represents that the quality of the second cell is higher than a certain threshold, the A2 event represents that the quality of the second cell is lower than the certain threshold, and the B2 event represents that the quality of the second cell is lower than the certain threshold and the quality of the first cell of the different system is higher than the certain threshold. The method comprises the steps of judging whether a basic switching condition is reached or not by acquiring a first cell signal and a second cell signal, respectively acquiring the frequency spectrum efficiency of a current service cell, namely a second cell, of a terminal and the frequency spectrum efficiency of an adjacent cell, namely a first cell, of the second cell after the basic switching condition is reached, comparing the frequency spectrum efficiency of the first cell with that of the second cell, and predicting the service rate of the first cell after the terminal is switched to the first cell when the frequency spectrum efficiency of the first cell is greater than that of the second cell. The switching judgment of the frequency spectrum efficiency is increased on the basis of achieving the basic switching condition, so that the basic requirement of service continuity is guaranteed, the difference of the frequency spectrum efficiency can be realized, and the frequency spectrum resources are effectively utilized.
When the first cell and the second cell have the same system LTE, the existing scheme cannot guarantee the best rate experience of the user when performing indoor and outdoor handover decision, as shown in the following table, the execution result of the existing indoor and outdoor handover mechanism is shown, and it can be known from the table that the efficiency of the user is obviously reduced after the user is handed over from the indoor cell to the outdoor cell.
Therefore, the method is also applicable to cell handover in the LTE system, and at this time, the basic handover condition is A3 (same frequency) or a1/a2+ a5 (different frequency) event, where A3 indicates that the quality of the first cell with the same frequency/different frequency is higher than a certain threshold compared with the quality of the second cell, and an a5 event indicates that the quality of the second cell is lower than a certain threshold, and the quality of the first cell with the different frequency is higher than a certain threshold. Then, according to the above steps, when the spectrum efficiency of the first cell is greater than the spectrum efficiency of the second cell and the traffic rate of the first cell reaches the traffic rate expected threshold, the handover may be performed to handover the terminal to the first cell. The switching judgment of the frequency spectrum efficiency is increased on the basis of achieving the basic switching condition, so that the basic requirement of service continuity is guaranteed, the difference of the frequency spectrum efficiency can be realized, and the frequency spectrum resources are effectively utilized.
Of course, in the embodiment of the present invention, the neighboring cell of the second cell, i.e. the first cell, may be one or more cells in practical application.
It should be noted that, the manner of obtaining the spectrum efficiency of the cells of different systems is different, and therefore, in the embodiment of the present invention, in step 11, obtaining the spectrum efficiency of the second cell and the spectrum efficiency of the first cell respectively includes:
step 111, obtaining the system type of the current cell; the current cell is a first cell and a second cell;
step 112, according to the system type of the current cell, searching a parameter table corresponding to the current cell to obtain the spectrum efficiency of the current cell. The spectrum efficiency of the first cell and the second cell can be obtained by simultaneous or separate processing, the system type of the suburb, that is, the currently processed cell (the first cell and the second cell) is obtained at first, and the corresponding parameter table can be searched after the system type is confirmed, so that the spectrum efficiency of the suburb can be obtained according to the related parameters in the parameter table.
In the embodiment of the present invention, the spectrum efficiency includes a voice service spectrum efficiency and a data service spectrum efficiency;
therefore, to obtain the spectrum efficiency of the voice service and the spectrum efficiency of the data service respectively, on the basis of the foregoing embodiments, in the handover decision method according to the embodiment of the present invention, step 112 includes:
step 1121, according to the system type of the current cell, searching a parameter table corresponding to the current cell, obtaining the channel signal-to-noise ratio statistical data of the data service in the parameter table, and obtaining the frequency spectrum efficiency of the data service of the current cell;
step 1122, according to the system type of the current cell, searching a parameter table corresponding to the current cell, and obtaining the channel signal-to-noise ratio statistical data of the voice service in the parameter table to obtain the frequency spectrum efficiency of the voice service of the current cell.
Wherein step 1121 includes:
step 11211, obtaining the channel signal-to-noise ratio statistical data of the data service in the parameter table, according to the formula:
obtaining the frequency spectrum efficiency of the data service; wherein,
RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; THPjThe throughput of the jth data service sampling point equal to the signal-to-noise ratio of the current channel in the channel signal-to-noise ratio statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the data service sampling points equal to the signal-to-noise ratio of the current channel; CB (CB)jAnd the frequency bandwidth of the jth data service sampling point which is equal to the current channel signal-to-noise ratio in the channel signal-to-noise ratio statistical data is obtained.
Taking the currently processed cell as an LTE system as an example, the signal to noise ratio of the channel depends on RSRQ (reference signal received quality) measurement, and RAT-SE can be represented as RAT at this timeLTE-SEi, which means the spectrum efficiency of the data service corresponding to the current RSRQ ═ i in the LTE system, and the required data, THP, can be obtained from the parameter table corresponding to the LTE systemjThroughput, CB, of data traffic sampling point for jth RSRQ ═ ijAnd substituting the frequency bandwidth of the jth data service sampling point with the RSRQ ═ i and the total number of the data service sampling points with the RSRQ ═ i into the formula to obtain the data service spectrum efficiency of the current LTE cell. Similar GSM system channel SNR relies on broadcast control channel carrier-to-interference ratio BCCH C/I measurement, and TD-SCDMA system channel SNR relies on basic common control channel carrier-to-interference ratio PCCPCH C/I measurement.
The above steps provide a realization mode for obtaining the spectrum efficiency of the data service, and the following steps provide the obtaining of the spectrum efficiency of the voice service. The system types include: a global system for mobile communication (GSM) system, a time division synchronous code division multiple access (TD-SCDMA) system and a Long Term Evolution (LTE) system; step 1122 includes:
step 11221, if the current cell is a GSM system or a TD-SCDMA system, searching a parameter table corresponding to the current cell, and directly obtaining a voice service spectrum efficiency corresponding to the current cell;
step 11221', if the current cell is the LTE system, look up the parameter table corresponding to the current cell, obtain the channel signal-to-noise ratio statistical data of the voice service in the parameter table, that is, the reference signal reception quality statistical data, according to the formula:
obtaining the frequency spectrum efficiency of the voice service; wherein, the RAT-SE' is the data service spectrum efficiency corresponding to the current reference signal receiving quality; TTIDLsubframe/aThe number of downlink subframes in a preset time period a is set; RBsjThe number of data packets used in each transmission time interval corresponding to the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the voice service sampling points equal to the current reference signal receiving quality; TTIjThe number of transmission time intervals correspondingly used by the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data; mu.sDLIs the downlink resource proportion.
Because the GSM system and the TD-SCDMA system are carried by the circuit CS, and the spectrum efficiency of the voice service of the GSM system and the TD-SCDMA system is a fixed value, the spectrum efficiency of the voice service corresponding to the current cell can be directly obtained from the parameter table corresponding to the current cell searched in step 11221. And for the cell of the LTE system, according to step 11221 ', searching a parameter table corresponding to the current cell, and acquiring channel signal-to-noise ratio statistical data of the voice service in the parameter table, namely reference signal receiving quality statistical data, wherein the RAT-SE' can be expressed as RAT at this momentLTE-SEi' means the spectrum efficiency of the voice service corresponding to the current RSRQ ═ i in the LTE system, and the required data, RBs, can be obtained from the parameter table corresponding to the LTE systemjFor the jth RSRThe number of data packets used in each transmission time interval corresponding to the voice service sampling point Q ═ i, TTIjThe number of transmission time intervals used for the j-th voice service sampling point, n is the total number of data service sampling points, TTIDLsubframe/aIs the number of downlink sub-frames in a preset time period a, muDLAnd substituting the uplink resource occupation ratios into the formula to obtain the voice service spectrum efficiency of the current LTE cell. In the present embodiment, a is preferably 20 ms.
After obtaining the spectrum efficiencies of the first cell and the second cell, the next step, step 12, includes:
step 121, comparing the spectrum efficiency of the voice service of the first cell with the spectrum efficiency of the voice service of the second cell, and comparing the spectrum efficiency of the data service of the first cell with the spectrum efficiency of the data service of the second cell;
step 122, when the spectrum efficiency of the voice service of the first cell is greater than the spectrum efficiency of the voice service of the second cell and the spectrum efficiency of the data service of the first cell is greater than the spectrum efficiency of the data service of the second cell, according to the formula:
obtaining the service rate of a first cell after the terminal is switched to the first cell by RAT-THR (RAT-THR) ═ RAT-SE (maximum Rate-bandwidth resource) multiplied by BW; wherein,
RAT-THR is the service rate of a first cell corresponding to the signal-to-noise ratio of the current channel; RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; BW is the channel bandwidth.
First, according to step 121, the comparison between the spectral efficiencies of the first cell and the second cell is completed, and when the spectral efficiency of the first cell is greater than the spectral efficiency of the second cell, according to step 122, the service rate of the first cell after the handover is predicted. For example, continuing with LTE system, the RAT-SE in the above formula can be expressed as RATLTESEi, i.e. the spectrum efficiency of the data service corresponding to the current RSRQ ═ i in the LTE system, according to the obtained RAT of the first cellLTEAnd substituting the SEi and the channel bandwidth BW into a formula to obtain the service rate of the first cell. Class ISimilar GSM system channel signal-to-noise ratio depends on broadcast control channel carrier-to-interference ratio BCCH C/I measurement, and TD-SCDMA system channel signal-to-noise ratio depends on basic common control channel carrier-to-interference ratio PCCPCH C/I measurement.
And then, comparing the obtained service rate of the first cell with a service rate expected threshold value, judging whether the first cell meets the service requirement after switching, and ensuring that the service of the user is normal only if the predicted service rate of the first cell can meet the service requirement after switching. And finally, when the service rate of the first cell is greater than or equal to the expected threshold of the service rate, executing switching and switching the terminal to the first cell.
In summary, the handover decision method of the embodiment of the present invention provides a handover strategy based on the cell spectrum efficiency and the predicted service rate of the cell after handover on the basis of the conventional handover mechanism, so as to maximize the spectrum efficiency of the handover between cells of different systems and the handover between cells of the LTE system; meanwhile, a method for calculating the frequency spectrum efficiency of each system cell is respectively provided for voice service and data service, the statistical result of the frequency spectrum efficiency of the cell is dynamically maintained, the frequency spectrum efficiency corresponds to the signal quality, and switching based on the frequency spectrum efficiency can be realized according to the signal quality; the comprehensive spectrum utilization efficiency of the whole network under the multi-network cooperation scene is effectively improved, and the method has remarkable effects of improving the network spectrum utilization efficiency and improving the user experience.
As shown in fig. 2, an embodiment of the present invention further provides a handover decision apparatus, including:
an obtaining module 10, configured to obtain spectrum efficiencies of a first cell and a second cell when a first cell signal and/or a second cell signal reach a basic handover condition, respectively; the second cell is a current service cell of a terminal, and the first cell is an adjacent cell of the second cell;
a processing module 20, configured to compare spectral efficiencies of the first cell and the second cell, and predict a service rate of the first cell after the terminal is switched to the first cell according to the spectral efficiency of the first cell when the spectral efficiency of the first cell is greater than the spectral efficiency of the second cell;
and a handover execution module 30, configured to execute handover to handover the terminal to the first cell when the traffic rate of the first cell is greater than or equal to the expected traffic rate threshold.
Wherein the acquisition module comprises:
the first obtaining submodule is used for obtaining the system type of the current cell; the current cell is a first cell and a second cell;
and the second obtaining submodule is used for searching a parameter table corresponding to the current cell according to the system type of the current cell to obtain the frequency spectrum efficiency of the current cell.
The spectrum efficiency comprises voice service spectrum efficiency and data service spectrum efficiency;
the second acquisition sub-module includes:
the first acquisition unit is used for searching a parameter table corresponding to the current cell according to the system type of the current cell, acquiring channel signal-to-noise ratio statistical data of the data service in the parameter table and obtaining the frequency spectrum efficiency of the data service of the current cell;
and the second acquisition unit is used for searching a parameter table corresponding to the current cell according to the system type of the current cell, acquiring the channel signal-to-noise ratio statistical data of the voice service in the parameter table and obtaining the frequency spectrum efficiency of the voice service of the current cell.
Wherein, the first acquisition unit includes:
a first obtaining subunit, configured to obtain channel signal-to-noise ratio statistical data of the data service in the parameter table, according to a formula:
obtaining the frequency spectrum efficiency of the data service; wherein,
RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; THPjThe throughput of the jth data service sampling point equal to the signal-to-noise ratio of the current channel in the channel signal-to-noise ratio statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the data service sampling points equal to the signal-to-noise ratio of the current channel; CB (CB)jAnd the frequency bandwidth of the jth data service sampling point which is equal to the current channel signal-to-noise ratio in the channel signal-to-noise ratio statistical data is obtained.
Wherein the system types include: a global system for mobile communication (GSM) system, a time division synchronous code division multiple access (TD-SCDMA) system and a Long Term Evolution (LTE) system;
the second acquisition unit includes:
the second acquiring subunit is used for searching a parameter table corresponding to the current cell when the current cell is a GSM system or a TD-SCDMA system, and directly acquiring the frequency spectrum efficiency of the voice service corresponding to the current cell;
a third obtaining subunit, configured to, when the current cell is an LTE system, search a parameter table corresponding to the current cell, obtain channel signal-to-noise ratio statistical data of a voice service in the parameter table, that is, reference signal reception quality statistical data, and according to a formula:
obtaining the frequency spectrum efficiency of the voice service; wherein, the RAT-SE' is the data service spectrum efficiency corresponding to the current reference signal receiving quality; TTIDLsubframe/aThe number of downlink subframes in a preset time period a is set; RBsjThe number of data packets used in each transmission time interval corresponding to the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the voice service sampling points equal to the current reference signal receiving quality; TTIjIs the jth of the reference signal received quality statistics is equal toThe number of transmission time intervals correspondingly used by the voice service sampling points of the receiving quality of the front reference signal; mu.sDLIs the downlink resource proportion.
Wherein the processing module comprises:
the first processing submodule is used for comparing the voice service spectrum efficiency of the first cell with the voice service spectrum efficiency of the second cell, and comparing the data service spectrum efficiency of the first cell with the data service spectrum efficiency of the second cell;
a second processing submodule, configured to, when the spectrum efficiency of the voice service in the first cell is greater than the spectrum efficiency of the voice service in the second cell and the spectrum efficiency of the data service in the first cell is greater than the spectrum efficiency of the data service in the second cell, according to a formula:
obtaining the service rate of a first cell after the terminal is switched to the first cell by RAT-THR (RAT-THR) ═ RAT-SE (maximum Rate-bandwidth resource) multiplied by BW; wherein,
RAT-THR is the service rate of a first cell corresponding to the signal-to-noise ratio of the current channel; RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; BW is the channel bandwidth.
The switching judgment device of the embodiment of the invention provides a switching strategy based on the cell spectrum efficiency and the predicted switched cell service rate as the reference on the basis of the traditional switching mechanism, thereby realizing the maximization of the spectrum efficiency of the switching between cells of different systems and the switching between cells of the LTE system; meanwhile, a method for calculating the frequency spectrum efficiency of each system cell is respectively provided for voice service and data service, the statistical result of the frequency spectrum efficiency of the cell is dynamically maintained, the frequency spectrum efficiency corresponds to the signal quality, and switching based on the frequency spectrum efficiency can be realized according to the signal quality; the comprehensive spectrum utilization efficiency of the whole network under the multi-network cooperation scene is effectively improved, and the method has remarkable effects of improving the network spectrum utilization efficiency and improving the user experience.
It should be noted that the apparatus is an apparatus to which the above handover decision method is applied, and the implementation manner of the handover decision method is applicable to the embodiment of the apparatus, and the same technical effect can be achieved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A handover decision method, comprising:
respectively acquiring the frequency spectrum efficiency of a first cell and the frequency spectrum efficiency of a second cell when a first cell signal and/or a second cell signal reach a basic switching condition; the second cell is a current service cell of a terminal, and the first cell is an adjacent cell of the second cell;
comparing the spectral efficiencies of the first cell and the second cell, and predicting the service rate of the first cell after the terminal is switched to the first cell according to the spectral efficiency of the first cell when the spectral efficiency of the first cell is greater than the spectral efficiency of the second cell;
when the service rate of the first cell is greater than or equal to the expected threshold of the service rate, executing switching and switching the terminal to the first cell; the spectrum efficiency comprises voice service spectrum efficiency and data service spectrum efficiency;
the basic handover condition includes an a1/a2+ B2 event, an A3 event, or an a1/a2+ a5 event, wherein the a1 event indicates that the second cell quality is higher than the first threshold, the a2 event indicates that the second cell quality is lower than the second threshold, the B2 event indicates that the second cell quality is lower than the third threshold and the inter-system first cell quality is higher than the fourth threshold, the A3 event indicates that the intra-frequency/inter-frequency first cell quality is higher than the fifth threshold compared to the second cell quality, and the a5 event indicates that the second cell quality is lower than the sixth threshold while the inter-frequency first cell quality is higher than the seventh threshold.
2. The handover decision method according to claim 1, wherein separately obtaining the spectrum efficiency of the second cell and the spectrum efficiency of the first cell comprises:
obtaining a system type of a current cell; the current cell is a first cell and a second cell;
and searching a parameter table corresponding to the current cell according to the system type of the current cell to obtain the spectrum efficiency of the current cell.
3. The handover decision method according to claim 2,
according to the system type of the current cell, searching a parameter table corresponding to the current cell to obtain the spectrum efficiency of the current cell, comprising:
according to the system type of the current cell, searching a parameter table corresponding to the current cell, and acquiring channel signal-to-noise ratio statistical data of the data service in the parameter table to obtain the frequency spectrum efficiency of the data service of the current cell;
according to the system type of the current cell, searching a parameter table corresponding to the current cell, and acquiring the channel signal-to-noise ratio statistical data of the voice service in the parameter table to obtain the frequency spectrum efficiency of the voice service of the current cell.
4. The handover decision method of claim 3, wherein the step of searching the parameter table corresponding to the current cell according to the system type of the current cell to obtain the channel signal-to-noise ratio statistical data of the data service in the parameter table to obtain the spectrum efficiency of the data service in the current cell comprises:
acquiring channel signal-to-noise ratio statistical data of the data service in the parameter table, and according to a formula:
obtaining the frequency spectrum efficiency of the data service; wherein,
RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; THPjThe throughput of the jth data service sampling point equal to the signal-to-noise ratio of the current channel in the channel signal-to-noise ratio statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the data service sampling points equal to the signal-to-noise ratio of the current channel; CB (CB)jAnd the frequency bandwidth of the jth data service sampling point which is equal to the current channel signal-to-noise ratio in the channel signal-to-noise ratio statistical data is obtained.
5. The handover decision method according to claim 3, wherein the system type comprises: a global system for mobile communication (GSM) system, a time division synchronous code division multiple access (TD-SCDMA) system and a Long Term Evolution (LTE) system;
according to the system type of the current cell, searching a parameter table corresponding to the current cell, acquiring the channel signal-to-noise ratio statistical data of the voice service in the parameter table, and acquiring the frequency spectrum efficiency of the voice service of the current cell, wherein the method comprises the following steps:
if the current cell is a GSM system or a TD-SCDMA system, searching a parameter table corresponding to the current cell, and directly obtaining the frequency spectrum efficiency of the voice service corresponding to the current cell;
if the current cell is an LTE system, searching a parameter table corresponding to the current cell, acquiring channel signal-to-noise ratio statistical data of voice service in the parameter table, namely reference signal receiving quality statistical data, and according to a formula:
obtaining the frequency spectrum efficiency of the voice service; wherein, the RAT-SE' is the voice service spectrum efficiency corresponding to the current reference signal receiving quality; TTIDLsubframe/aThe number of downlink subframes in a preset time period a is set; RBsjThe number of data packets used in each transmission time interval corresponding to the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the voice service sampling points equal to the current reference signal receiving quality; TTIjThe number of transmission time intervals correspondingly used by the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data; mu.sDLIs the downlink resource proportion.
6. The handover decision method according to claim 4, wherein comparing the spectral efficiencies of the first cell and the second cell, and when the spectral efficiency of the first cell is greater than the spectral efficiency of the second cell, predicting the traffic rate of the first cell after the terminal is handed over to the first cell according to the spectral efficiency of the first cell comprises:
comparing the voice service spectrum efficiency of the first cell with the voice service spectrum efficiency of the second cell, and comparing the data service spectrum efficiency of the first cell with the data service spectrum efficiency of the second cell;
when the voice service spectrum efficiency of the first cell is greater than the voice service spectrum efficiency of the second cell and the data service spectrum efficiency of the first cell is greater than the data service spectrum efficiency of the second cell, according to a formula:
obtaining the service rate of a first cell after the terminal is switched to the first cell by RAT-THR (RAT-THR) ═ RAT-SE (maximum Rate-bandwidth resource) multiplied by BW; wherein,
RAT-THR is the service rate of a first cell corresponding to the signal-to-noise ratio of the current channel; RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; BW is the channel bandwidth.
7. A handover decision apparatus, comprising:
an obtaining module, configured to obtain spectral efficiencies of a first cell and a second cell respectively when a first cell signal and/or a second cell signal reach a basic handover condition; the second cell is a current service cell of a terminal, and the first cell is an adjacent cell of the second cell;
the processing module is used for comparing the spectral efficiencies of the first cell and the second cell, and predicting the service rate of the first cell after the terminal is switched to the first cell according to the spectral efficiency of the first cell when the spectral efficiency of the first cell is greater than the spectral efficiency of the second cell;
a handover execution module, configured to execute handover to handover a terminal to the first cell when a traffic rate of the first cell is greater than or equal to a traffic rate expected threshold; wherein,
the spectrum efficiency comprises voice service spectrum efficiency and data service spectrum efficiency;
the basic handover condition includes an a1/a2+ B2 event, an A3 event, or an a1/a2+ a5 event, wherein the a1 event indicates that the second cell quality is higher than the first threshold, the a2 event indicates that the second cell quality is lower than the second threshold, the B2 event indicates that the second cell quality is lower than the third threshold and the inter-system first cell quality is higher than the fourth threshold, the A3 event indicates that the intra-frequency/inter-frequency first cell quality is higher than the fifth threshold compared to the second cell quality, and the a5 event indicates that the second cell quality is lower than the sixth threshold while the inter-frequency first cell quality is higher than the seventh threshold.
8. The handover decision device of claim 7, wherein the obtaining module comprises:
the first obtaining submodule is used for obtaining the system type of the current cell; the current cell is a first cell and a second cell;
and the second obtaining submodule is used for searching a parameter table corresponding to the current cell according to the system type of the current cell to obtain the frequency spectrum efficiency of the current cell.
9. The handover decision device of claim 8,
the second acquisition sub-module includes:
the first acquisition unit is used for searching a parameter table corresponding to the current cell according to the system type of the current cell, acquiring channel signal-to-noise ratio statistical data of the data service in the parameter table and obtaining the frequency spectrum efficiency of the data service of the current cell;
and the second acquisition unit is used for searching a parameter table corresponding to the current cell according to the system type of the current cell, acquiring the channel signal-to-noise ratio statistical data of the voice service in the parameter table and obtaining the frequency spectrum efficiency of the voice service of the current cell.
10. The handover decision device of claim 9, wherein the first obtaining unit comprises:
a first obtaining subunit, configured to obtain channel signal-to-noise ratio statistical data of the data service in the parameter table, according to a formula:
obtaining the frequency spectrum efficiency of the data service; wherein,
RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; THPjThe throughput of the jth data service sampling point equal to the signal-to-noise ratio of the current channel in the channel signal-to-noise ratio statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the data service sampling points equal to the signal-to-noise ratio of the current channel; CB (CB)jAnd the frequency bandwidth of the jth data service sampling point which is equal to the current channel signal-to-noise ratio in the channel signal-to-noise ratio statistical data is obtained.
11. The handover decision device of claim 9, wherein the system type comprises: a global system for mobile communication (GSM) system, a time division synchronous code division multiple access (TD-SCDMA) system and a Long Term Evolution (LTE) system;
the second acquisition unit includes:
the second acquiring subunit is used for searching a parameter table corresponding to the current cell when the current cell is a GSM system or a TD-SCDMA system, and directly acquiring the frequency spectrum efficiency of the voice service corresponding to the current cell;
a third obtaining subunit, configured to, when the current cell is an LTE system, search a parameter table corresponding to the current cell, obtain channel signal-to-noise ratio statistical data of a voice service in the parameter table, that is, reference signal reception quality statistical data, and according to a formula:
obtaining the frequency spectrum efficiency of the voice service; wherein, the RAT-SE' is the voice service spectrum efficiency corresponding to the current reference signal receiving quality; TTIDLsubframe/aThe number of downlink subframes in a preset time period a is set; RBsjThe number of data packets used in each transmission time interval corresponding to the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data is larger than or equal to 1 and smaller than or equal to n, and n is the total number of the voice service sampling points equal to the current reference signal receiving quality; TTIjThe number of transmission time intervals correspondingly used by the jth voice service sampling point equal to the current reference signal receiving quality in the reference signal receiving quality statistical data; mu.sDLIs the downlink resource proportion.
12. The handover decision device of claim 10, wherein the processing module comprises:
the first processing submodule is used for comparing the voice service spectrum efficiency of the first cell with the voice service spectrum efficiency of the second cell and comparing the data service spectrum efficiency of the first cell with the data service spectrum efficiency of the second cell;
a second processing submodule, configured to, when the spectrum efficiency of the voice service in the first cell is greater than the spectrum efficiency of the voice service in the second cell and the spectrum efficiency of the data service in the first cell is greater than the spectrum efficiency of the data service in the second cell, according to a formula:
obtaining the service rate of a first cell after the terminal is switched to the first cell by RAT-THR (RAT-THR) ═ RAT-SE (maximum Rate-bandwidth resource) multiplied by BW; wherein,
RAT-THR is the service rate of a first cell corresponding to the signal-to-noise ratio of the current channel; RAT-SE is the frequency spectrum efficiency of the data service corresponding to the signal-to-noise ratio of the current channel; BW is the channel bandwidth.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0479255A2 (en) * | 1990-10-02 | 1992-04-08 | Nippon Telegraph And Telephone Corporation | Method of handover and route diversity in mobile radio communication |
| CN102625389A (en) * | 2011-01-31 | 2012-08-01 | 华为技术有限公司 | Access method of mobile communication network, apparatus and system |
| CN102970717A (en) * | 2012-11-27 | 2013-03-13 | 北京北方烽火科技有限公司 | Method and device for switching different downlink transmission modes of LTE (long term evolution) system |
| CN103959862A (en) * | 2011-09-29 | 2014-07-30 | 诺基亚通信公司 | Handover management based on load |
-
2014
- 2014-11-05 CN CN201410616101.1A patent/CN105636126B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0479255A2 (en) * | 1990-10-02 | 1992-04-08 | Nippon Telegraph And Telephone Corporation | Method of handover and route diversity in mobile radio communication |
| CN102625389A (en) * | 2011-01-31 | 2012-08-01 | 华为技术有限公司 | Access method of mobile communication network, apparatus and system |
| CN103959862A (en) * | 2011-09-29 | 2014-07-30 | 诺基亚通信公司 | Handover management based on load |
| CN102970717A (en) * | 2012-11-27 | 2013-03-13 | 北京北方烽火科技有限公司 | Method and device for switching different downlink transmission modes of LTE (long term evolution) system |
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