CN106255163B - Information processing method and base station - Google Patents
Information processing method and base station Download PDFInfo
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- CN106255163B CN106255163B CN201510314309.2A CN201510314309A CN106255163B CN 106255163 B CN106255163 B CN 106255163B CN 201510314309 A CN201510314309 A CN 201510314309A CN 106255163 B CN106255163 B CN 106255163B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
Abstract
The invention discloses an information processing method and a base station, wherein the method comprises the following steps: informing a second base station to measure a first signal transmitted by a first terminal; receiving first measurement result information measured by the second base station on the first signal; and informing the first terminal to be switched to the second base station based on the first measurement result information.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to an information processing method and a base station.
Background
In order to meet higher traffic demand and more terminal access demand in a long term Evolution (L ong Time Evolution, L TE) network, a novel communication network structure, namely a heterogeneous network, is proposed.
As shown in fig. 1, a macro base station covers a large macro area, and a small base station 1, a small base station 2, and a small base station 3 are further disposed in a macro cell, and respectively form a small cell 1, a small cell 2, and a small cell 3; it is clear that this achieves coverage of multiple radio signals in the same geographical location.
The small cell introduces the heterogeneous network formed by the macro cell, so that the throughput of the system and the network rate and bandwidth of the terminal are improved, and the terminal can be frequently switched among a plurality of small cells.
The method for switching the terminal between the small cells in the prior art is generally as follows:
the first step is as follows: a terminal measures downlink signals sent by at least 1 small base station to form a downlink signal measurement result;
the second step is that: reporting the measurement result of the downlink signal to a base station;
the third step: and the macro base station controls the terminal to switch the small cell according to the downlink signal measurement result.
However, the terminal is a mobile device, and the radius of the small cell is usually small, and the conditions that may occur are as follows: the terminal needs to measure downlink signals sent by a plurality of small base stations, and based on the problems of measurement capability of the terminal and the like, the terminal may not be capable of simultaneously measuring the quality of the downlink signals of the plurality of small base stations, so that the measurement is performed in a time division manner, in this way, the time for measuring the downlink signals sent by the plurality of small base stations may be long, the terminal does not measure the downlink signals sent by some specified measured small base stations, the terminal leaves the coverage range of the corresponding small base stations, the measurement cannot be performed any more, the uplink signal measurement result required by the macro base station cannot be obtained, and the failure of switching between small cells by the terminal is caused.
For example, corresponding to the terminal in fig. 1, it may be necessary to measure the signal quality of the downlink signals of the small cell 1, the small cell 2, and the small cell 3, and it may be seen that the moving speed of the terminal is fast, so that the terminal only measures the downlink signal of the small cell 2 and is far away from the original position, and cannot measure the downlink signal quality of the small cell 3, thereby causing measurement failure and further causing handover failure.
Disclosure of Invention
In view of this, embodiments of the present invention are directed to providing an information processing method and a base station, which reduce the problem of handover failure caused by excessive measurement load of a terminal.
In order to achieve the purpose, the technical scheme of the invention is realized as follows: a first aspect of an embodiment of the present invention provides an information processing method, where the method includes:
informing a second base station to measure a first signal transmitted by a first terminal;
receiving first measurement result information measured by the second base station on the first signal;
and informing the first terminal to be switched to the second base station based on the first measurement result information.
Preferably, the informing the second base station to measure the first signal transmitted by the first terminal includes:
informing the second base station to measure the first signal for n times at different moments within a first designated time to form n signal qualities; wherein n is an integer not less than 1;
the notifying the first terminal to be handed over to the second base station based on the first measurement result information includes:
and informing the first terminal to switch to the second base station based on the variation trend of the n signal qualities.
Preferably, the notifying the first terminal to be handed over to the second base station based on the first measurement result information includes:
and informing the first terminal to switch to the second base station based on at least two pieces of first measurement result information measured by the second base station.
Preferably, the method further comprises:
informing the first terminal to measure a second signal transmitted by the second base station;
receiving second measurement result information formed by the first terminal on the second signal measurement;
the notifying the first terminal to be handed over to the second base station based on the first measurement result information includes:
and combining the first measurement result information and the second measurement result information to inform the first terminal to switch to the second base station.
Preferably, the informing the second base station to measure the first signal transmitted by the first terminal includes:
and informing the second base station to measure the channel sounding reference information number SRS and/or the demodulation reference signal DMRS transmitted by the first terminal.
A second aspect of the embodiments of the present invention provides an information processing method, where the method includes:
receiving a notification of a first base station;
measuring a first signal transmitted by a first terminal based on the notification of the first base station to obtain first measurement result information;
transmitting the first measurement result information to the first base station; wherein the first measurement result information is used as a basis for the first base station to inform the first terminal of switching to the second base station.
A third aspect of the embodiments of the present invention provides a base station, where the base station is a first base station; the first base station includes:
a first notification unit for notifying the second base station to measure the first signal transmitted by the first terminal;
a first receiving unit, configured to receive first measurement result information measured by the second base station on the first signal;
a second notifying unit, configured to notify the first terminal to switch to the second base station based on the first measurement result information.
Preferably, the first notifying unit is specifically configured to notify the second base station to perform n measurements on the first signal at different times within a first specified time to form n signal qualities; wherein n is an integer not less than 1;
the second notifying unit is specifically configured to notify the first terminal to switch to the second base station based on the variation trend of the n signal qualities.
Preferably, the second notifying unit is specifically configured to notify the first terminal to switch to the second base station based on at least two pieces of first measurement result information measured by the second base station.
Preferably, the second notifying unit is further configured to notify the first terminal to measure a second signal transmitted by the second base station;
the first receiving unit is further configured to receive second measurement result information formed by the first terminal measuring the second signal;
the second notifying unit is specifically configured to, in combination with the first measurement result information and the second measurement result information, notify the first terminal to switch to the second base station.
Preferably, the first notifying unit is specifically configured to notify the second base station to measure a channel sounding reference information number SRS and/or a demodulation reference signal DMRS transmitted by the first terminal.
A fourth aspect of the present embodiment provides a base station, where the base station is a second base station; the second base station includes:
a second receiving unit for receiving a notification of the first base station;
a measuring unit, configured to measure a first signal transmitted by a first terminal based on the notification of the first base station, and obtain first measurement result information;
a sending unit, configured to send the first measurement result information to the first base station; wherein the first measurement result information is used as a basis for the first base station to inform the first terminal of switching to the second base station.
In the information processing method and the base station according to the embodiments of the present invention, the second base station measures the first signal transmitted by the first terminal, and controls the handover of the first terminal according to the first measurement result information measured by the second base station. In the embodiment, the second base station performs measurement, which may cause a problem that a measurement delay is large, a reference value of a measurement result is low, and finally a handover failure of the first terminal is caused because the second signal transmitted by the second base station may need to be measured by the first terminal; each base station measures the signal sent by the first terminal, so that the problems of measurement delay, large measurement load, switching failure and the like caused by the concentration of the measurement load on the first terminal can be effectively relieved.
Drawings
FIG. 1 is a schematic diagram of a network result;
FIG. 2 is a flowchart illustrating an information processing method according to an embodiment of the present invention;
FIG. 3a is a schematic diagram of n variation trends according to an embodiment of the present invention;
fig. 3b is a second schematic diagram illustrating the variation trend of the n signal qualities according to the embodiment of the present invention;
FIG. 4 is a second flowchart illustrating an information processing method according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a first base station according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second base station according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating an information processing method according to an example of the present invention;
FIG. 8 is a diagram illustrating measurement results of an information processing method according to an exemplary embodiment of the present invention;
fig. 9 is a second flowchart illustrating an information processing method according to an example of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the drawings and the specific embodiments of the specification.
The first embodiment of the method comprises the following steps:
as shown in fig. 2, the present embodiment provides an information processing method, including:
step S110: informing a second base station to measure a first signal transmitted by a first terminal;
step S120: receiving first measurement result information measured by the second base station on the first signal;
step S130: and informing the first terminal to be switched to the second base station based on the first measurement result information.
The method of this embodiment may be applied to a first base station, where the first base station is a different base station from the second base station. Of course, an execution main body of the information processing method in this embodiment may be, besides the first base station, a network element in another communication system, such as a mobility management entity MME and other structures.
Typically the first base station may be a macro base station, such as an evolved base station eNB. The second base station may be a small base station or a small cell base station. The first base station covers and forms a first cell; the second base station covers and forms a second cell; the coverage area of the second cell is smaller than the coverage area of the first cell; the second cell is at least partially located within the first cell.
The first terminal described in this embodiment may be a dual-connection or multi-connection terminal, that is, a terminal capable of establishing connection with at least 2 base stations simultaneously.
In step S110, the first base station notifies the second base station to measure the first signal transmitted by the first terminal. In this embodiment, the first terminal may be referred to as any one terminal. The first signal is used to refer to one or more of various signals transmitted by the first terminal.
After receiving the notification sent by the first base station, the second base station will measure the first signal sent by the first base station, and will form the first measurement result information.
In this embodiment, the second base station that will measure the first signal may be more than 1, and may be a plurality of base stations of 2 or more than 2.
In general, if the current serving cell of the first terminal is the 1 st cell, the cell formed by the second base station may include a neighboring cell of the 1 st cell. That is to say that typically the second base station is a neighbouring base station to the first base station. For example, the current serving cell of the first terminal is a cell formed by the source small base station, and the execution subject of the information processing method in this embodiment is the first base station of the macro base station, and the second base station may be: the first base station and other executing entities determine the base station according to the geographical position of the first terminal, and usually the second base station is a base station near the geographical position of the first terminal.
The condition for triggering the first base station to notify the second base station to perform measurement in step S110 may be: the first base station detects that the signal quality of the first terminal to the 1 st cell which is formed at the first base station and used for providing service for the first terminal is lower than a specified threshold value. This time means that the position relationship between the first terminal and the first base station changes, the 1 st cell cannot provide a communication service for the first terminal well, and the first terminal needs to be handed over to the second base station to obtain a communication service meeting the communication quality requirement of the first terminal, so the first base station can notify the second base station to measure the first signal sent by the first terminal at this time.
The first base station will receive the first measurement result information in step S120. The first measurement result information can be used to characterize whether the first terminal has entered a2 nd cell formed by the second base station at a local location, and/or the first measurement result indicates that the second base station measures the signal quality of the first signal, and the like, and these information can be used by the first base station to determine whether the first terminal is currently suitable for being handed in to the second base station.
In step S130 in this embodiment, the first base station makes a judgment according to the first measurement result information and notifies the first terminal to switch to the second base station. Of course, in this embodiment, the step S130 notifies the first terminal to switch to the second base station based on the first measurement result information, which is performed only when the first measurement result information satisfies the switching condition, and the first base station will determine the second base station to which the terminal is to be specifically switched and the switching timing according to the first measurement result information.
It is obvious that the information processing method described in this embodiment can be used to control the handover between different base stations of the terminal. However, the difference between the prior art and the prior art is that in this embodiment, the second base station, the first terminal that transmits the measurement signal, performs the measurement; by adopting the mode, the problems that the terminal moves under a complex network environment, the terminal measures heavy load, the measurement result delay is large, the measurement result cannot be well used as the terminal switching basis and the like in the prior art can be well solved; meanwhile, the first terminal sends the first signal to receive the notification of the first base station to switch the base stations, so that the power consumption of the mobile terminal can be reduced, and the standby time of the mobile terminal can be prolonged.
The second method embodiment:
as shown in fig. 2, the present embodiment provides an information processing method, including:
step S110: informing a second base station to measure a first signal transmitted by a first terminal;
step S120: receiving first measurement result information measured by the second base station on the first signal;
step S130: and informing the first terminal to be switched to the second base station based on the first measurement result information.
The step S110 may include:
informing the second base station to measure the first signal for n times at different moments within a first designated time to form n signal qualities; wherein n is an integer not less than 1;
the step S120 may include:
and informing the first terminal to switch to the second base station based on the variation trend of the n signal qualities.
In this embodiment, the first specified time is a specified time duration, specifically, 1 minute or 2 minutes or 30 seconds, and may be a preset time length, or may be a measurement time that is dynamic according to a change rate of channel quality between the first base station and the first terminal. If the channel quality change rate between the first base station and the first terminal is larger, the length of the duration corresponding to the first designated time is longer.
In this case, if the number of the second base stations is greater than 1, the first base station may generally notify the second base station that the first signal sent by the first terminal is measured at the same measurement time, so that it can be known that the quality of a communication channel between the first terminal and which base station is better at the measurement time, and thus the first base station can conveniently decide to notify the second base station to which the first terminal should be handed over, and information such as a handover timing.
In particular, when the first signal measurement is performed, the first terminal may move rapidly, and there may be more than one second base station performing the first signal measurement, and the time when the base stations perform the first signal measurement may not be the same time. A situation may arise where base station a measures the first signal at time a to obtain a 1 st signal quality; the base station B measures the first signal at the moment B to obtain a2 nd semaphore quantity; if the time A is earlier than the time B; the 1 st signal quality and the 2 nd signal quality are equal, and in this case, if only 1 signal quality measured by each second base station is measured, it is difficult for the first base station to decide whether the first terminal should be notified to switch to the base station a or the base station B.
To avoid the above phenomenon, in this embodiment, the second base station is notified to perform multiple measurements on the first signal transmitted by the first terminal at different times within the first specified time. In this way, the n signal quality variation trends can be obtained based on the n signal qualities formed by the n measurements of each second base station,
if the above example is taken as an example, if the base station a measures the first signal at different times at least 2 times, 2 or more signal qualities are formed; thus, it is known whether the trend of the change of the signal quality of the first signal measured by the base station a becomes stronger or weaker. For example, the first terminal gradually moves away from the base station a and gradually moves closer to the base station B during the moving process; base station B also measures the first signal at least twice, thus also forming two signal qualities; the change trend of the signal quality measured by the base station B gradually becomes stronger; while the signal quality measured by base station a gradually weakens. In this way, even if some of the signal qualities measured by the base station a are greater than those of the base station B, the signal quality of the base station B tends to be higher and higher, which indicates that the channel quality between the first terminal and the base station B is better and better or closer to the base station B, and the channel quality between the first terminal and the base station a is worse and worse or closer to the base station a, and then the first terminal may be notified to switch to the base station B instead of the base station a.
Fig. 3a shows an example based on the present embodiment. The curve representing the variation trend formed by the connection of the n signal qualities measured by the base station 1 on the first signal is a solid curve in fig. 3 a; the curve representing the trend formed by the base station 2 for the n signal quality connections measured for the first signal is shown as a dashed curve in fig. 3 a. The dashed straight line shown in fig. 3a is the switching threshold.
It is obvious from fig. 3a that, from the viewpoint of only a single signal quality, the partial signal quality measured by the base station 1 is still greater than the partial signal quality measured by the base station 2, and the signal qualities measured by the base stations 1 are both greater than the handover threshold; however, from the trend of the signal quality change, the signal quality measured by the base station 2 is gradually increased from the handover threshold to a value greater than the handover threshold and greater than the signal quality of the base station 1, and with the information processing method according to this embodiment, the first base station or other execution subject that executes the information processing method according to this embodiment decides a second base station to which the first terminal is to be handed over according to the trend of the n signal qualities measured by the respective second base stations n times, and notifies the first terminal to be handed over to the decided corresponding second base station.
But it is noteworthy that: and when the first terminal is informed to switch according to the change trend, the signal quality can be combined. If, as shown in fig. 3b, it is assumed that the trend of the signal quality of the base station 2 is gradually increasing, but the n signal qualities measured by the base station 2 are all smaller than the handover threshold, at this time, even if the n signal qualities measured by the base station 2 are actually gradually increasing, the first terminal cannot be notified to handover to the base station 2, otherwise, the problem of poor communication quality of the first base station may be caused.
In this embodiment, the first base station or other executing entity may combine the variation trend of the n signal qualities of each second base station with the signal quality itself (where the signal quality itself at least includes the signal quality measured by the last of the n signal qualities measured by each second base station) to determine a second base station accessible to the first terminal, and send the determination result to the first terminal.
The signal quality here may be a received power or a received signal strength of the first signal.
In summary, the information processing method according to this embodiment can solve various problems caused by measurement performed by the terminal, and can also solve the problem that the reference of the measurement result to the handover of the first terminal is not strong due to the fact that the measurement time of the plurality of second base stations cannot be highly unified when the terminal operates at a high speed, so that the fast and accurate handover of the first terminal between different cells can be better achieved.
The third method embodiment:
as shown in fig. 2, the present embodiment provides an information processing method, including:
step S110: informing a second base station to measure a first signal transmitted by a first terminal;
step S120: receiving first measurement result information measured by the second base station on the first signal;
step S130: and informing the first terminal to be switched to the second base station based on the first measurement result information.
The step S130 may include:
and informing the first terminal to switch to the second base station based on at least two pieces of first measurement result information measured by the second base station.
In this embodiment, the second base stations performing the first signal measurement include at least two second base stations, in this embodiment, the first base station and other execution main bodies respectively receive the first measurement result information sent by each second base station, comprehensively compare the first measurement result information of each base station, and finally determine the second base station to which the first terminal is currently suitable to be switched, and when notifying the first terminal to perform the switching, send the base station identifier of the corresponding second base station and/or the identification information such as the cell identifier of the cell formed by the corresponding second base station to the first terminal, so that the first terminal finds the corresponding second base according to the identification information such as the base station identifier and/or the cell identifier, and switches to the base station.
In the integrated comparison, the first base station and the like may perform the main body, and may compare first measurement result information formed by each second base station, and determine which second base station is accessible or most suitable for the first terminal to access according to the first measurement result information. Meanwhile, second measurement result information returned by the first terminal is compared, and which second base station can be accessed by the first terminal or is most suitable for the first terminal to access is determined according to the first measurement result information; and selecting one of the two comparison results which is determined to be available for the first terminal or the second base station which is most suitable for the first terminal to access. It is worth noting that: in the embodiment of the present application, the second base station most suitable for the first terminal to access may be a second base station with the best channel quality effect with the first terminal, among the second base stations to which the first terminal can access or handover, when at least two second base stations are available for the first terminal to access and handover.
Of course, the comprehensive comparison here may also be that the first measurement result information and the second measurement result information are compared in a unified manner; for example, the measurement result information of the second base station and the first terminal both include signal quality; in this case, the signal quality can be determined by means of signal quality rank comparison. And when some second base stations have measurement but the first terminal does not have corresponding measurement results, directly adopting the first measurement result information of the second base stations. If a second base station and the first terminal both have channels to measure, then one of the two may be selected as the measurement result of the channel measurement between the second base station and the first terminal with a higher signal quality.
The channel measurement here may include the measurement of the second signal by the first terminal, and also the measurement of the first signal by the second base station.
In summary, the present embodiment provides a method for performing handover based on first measurement result information of a plurality of second base stations on the basis of the foregoing embodiments, and has the advantage of simple implementation.
The method comprises the following steps:
as shown in fig. 2, the present embodiment provides an information processing method, including:
step S110: informing a second base station to measure a first signal transmitted by a first terminal;
step S120: receiving first measurement result information measured by the second base station on the first signal;
step S130: and informing the first terminal to be switched to the second base station based on the first measurement result information.
As shown in fig. 4, the method of this embodiment further includes:
step S140: informing the first terminal to measure a second signal transmitted by the second base station;
step S150: receiving second measurement result information formed by the first terminal on the second signal measurement;
the step S130 may include: and combining the first measurement result information and the second measurement result information to inform the first terminal to switch to the second base station.
In this embodiment, there is no certain precedence relationship between the step S140 and the step S110, and it is only necessary to satisfy that the step S140 to the step S150, and the step S110 to the step S120 are completed before the step S130.
In this embodiment, the second signal may be various measurement signals used for channel quality measurement, such as a discovery signal transmitted by the second base station.
In this embodiment, in order to better implement the handover of the first terminal, the first terminal is further notified to measure the second signal sent by the second base station, so that if the first terminal moves fast, even if the first terminal omits measurement of part of the second signal sent by the second base station, the first measurement result of the measurement of the first signal by the second base station may be combined to decide the second base station to which the first terminal is currently suitable to be handed over, so as to implement better handover of the second base station.
Method example five:
as shown in fig. 2, the present embodiment provides an information processing method, including:
step S110: informing a second base station to measure a first signal transmitted by a first terminal;
step S120: receiving first measurement result information measured by the second base station on the first signal;
step S130: and informing the first terminal to be switched to the second base station based on the first measurement result information.
The step S110 may include: and informing the second base station to measure the channel sounding reference information number SRS and/or the demodulation reference signal DMRS transmitted by the first terminal. In this embodiment, the SRS and/or DMRS signal is measured, and the first terminal can simply and conveniently transmit the signal, and can also facilitate detection and measurement of the second base station.
By integrating the information processing method described in this embodiment, the second base station can be used to measure the first signal transmitted by the first terminal, and then the switching of the first terminal between the first base station and the second base station is controlled.
Method example six:
as shown in fig. 5, the present embodiment provides an information processing method, including:
step S210: receiving a notification of a first base station;
step S220: measuring a first signal transmitted by a first terminal based on the notification of the first base station to obtain first measurement result information;
step S230: transmitting the first measurement result information to the first base station; wherein the first measurement result information is used as a basis for the first base station to inform the first terminal of switching to the second base station.
The information processing method described in this embodiment may be used in the second base station. The step S210 may receive the notification of the first base station, where the notification is sent by the first base station through an X2 interface, or may be the notification of the first base station forwarded by another relay node in the communication network.
After receiving the notification, the second base station measures a first signal sent by the first terminal under the trigger of the notification, so as to obtain the first measurement result information.
In this embodiment, the first signal may include an SRS or DMRS signal transmitted by the first terminal as described in the foregoing embodiments.
In this embodiment, the second base station is able to conveniently determine the second base station to which the first terminal can be handed over and which is most suitable for the first terminal to be handed over.
In this embodiment, the second base station may be a neighboring base station of the first base station. The first base station is formed with a first cell; the second base station is formed with a second cell. If the current cell is a heterogeneous network, the second cell is at least partially located in the first cell from the viewpoint of geographic location. The second base station may be an access device, such as a small base station or a small cell base station, which can be used for the first terminal to access the network.
In specific measurement, after receiving the notification from the first base station, the second terminal may perform n measurements on the first signal to form n signal qualities; the n may be 1 or an integer greater than 1. When the first signal is measured for multiple times, the second base station usually measures at different moments within a first specified time, and sends the signal quality measured for multiple times to the first base station, so that the first base station can determine the variation trend of the n signal qualities conveniently. The change trend may provide a basis for the first base station to notify the first terminal of the handover. Specifically, for the first base station to notify or control the handover of the first terminal according to the n signal qualities, refer to method embodiment two, and this is not repeated here.
In summary, the embodiment provides an information processing method, which is an information processing method applicable to a second base station, where the second base station actively undertakes measurement, so that a measurement load of a first terminal can be reduced, and a problem that a measurement result cannot provide a basis for handover of the first terminal well due to measurement delay and the like caused by that the first terminal needs to measure signals sent by a plurality of second base stations is avoided.
The first embodiment of the device:
as shown in fig. 5, the present embodiment provides a base station, which is a first base station; the first base station includes:
a first notifying unit 110, configured to notify the second base station to measure the first signal transmitted by the first terminal;
a first receiving unit 120, configured to receive first measurement result information measured by the second base station on the first signal;
a second notifying unit 130, configured to notify the first terminal to switch to the second base station based on the first measurement result information.
The specific structure of the first notification unit 110 in this embodiment may include a communication interface, which can be used for communicating with the second base station. Specifically, the communication interface may be an X2 interface.
The first receiving unit 120 may also correspond to a communication interface, such as an X2 interface, capable of receiving the first measurement result information from the second base station.
The second notification unit 130 may comprise a processor and a communication interface; the processor can determine whether the first terminal needs to be informed of switching, specifically which second base station to switch to, based on the first measurement result information. And the communication interface sends a notice to the first terminal to inform the first terminal to switch to a second base station.
In this embodiment, the communication interfaces included in the first notification unit 110, the first receiving unit 120, and the second notification unit 130 may be different communication interfaces in the first base station, or may be integrated with the same communication interface in the first base station.
The first base station in this embodiment can be configured to execute the method to implement the information processing method described in the first to fifth embodiments, and can control the second base station to measure the first signal transmitted by the first base station, so that the measurement load of the first terminal can be shared, and the response rate of measurement is improved, thereby performing handover better and more accurately, and reducing the probability of handover failure.
The second equipment embodiment:
as shown in fig. 5, the present embodiment provides a base station, which is a first base station; the first base station includes:
a first notifying unit 110, configured to notify the second base station to measure the first signal transmitted by the first terminal;
a first receiving unit 120, configured to receive first measurement result information measured by the second base station on the first signal;
a second notifying unit 130, configured to notify the first terminal to switch to the second base station based on the first measurement result information.
The first notifying unit 110 is specifically configured to notify the second base station to perform n measurements on the first signal at different times within a first specified time to form n signal qualities; wherein n is an integer not less than 1;
the second notifying unit 130 is specifically configured to notify the first terminal to switch to the second base station based on the variation trend of the n signal qualities.
In this embodiment, the first notification unit 110 measures the first signal by the second base station at different times within the first specified time duration, so as to avoid a problem that the first terminal does not know to which second base station to select to switch due to the fact that the plurality of second base stations measure at different times.
The third equipment embodiment:
as shown in fig. 5, the present embodiment provides a base station, which is a first base station; the first base station includes:
a first notifying unit 110, configured to notify the second base station to measure the first signal transmitted by the first terminal;
a first receiving unit 120, configured to receive first measurement result information measured by the second base station on the first signal;
a second notifying unit 130, configured to notify the first terminal to switch to the second base station based on the first measurement result information.
The second notifying unit 130 is specifically configured to notify the first terminal to switch to the second base station based on at least two pieces of first measurement result information measured by the second base station.
In this embodiment, the first notification unit 110 may notify two or more second base stations to continue the measurement of the first signal. The second notification unit 130 notifies the first terminal to perform handover according to the first measurement result information returned by each second base station. In general, when notifying the first terminal, the second notification unit 130 may include, in the information sent to the first terminal, identification information of a second base station accessible by the first terminal and/or cell identification information of a cell formed by the second base station accessible by the first terminal. Therefore, the first terminal can select the second base station and/or the cell formed by the second base station according to the identification information conveniently.
The specific structure of the second notification unit 130 in this embodiment may include a comparator or a processor with a comparison function; it is possible to determine which second base station is accessible to the first terminal and which second base station is most suitable for access to the first terminal by comparing the first measurement result information formed by the plurality of second base stations in a combined manner.
The first base station in this embodiment is a further improvement of the first base station on the basis of the two foregoing device embodiments, and can be used to implement the information processing method in the third method embodiment, so that the measurement load of the first terminal can be reduced, the response rate of measurement can be improved, and the cut-flower failure rate of the first terminal can be reduced.
The fourth equipment embodiment:
as shown in fig. 5, the present embodiment provides a base station, which is a first base station; the first base station includes:
a first notifying unit 110, configured to notify the second base station to measure the first signal transmitted by the first terminal;
a first receiving unit 120, configured to receive first measurement result information measured by the second base station on the first signal;
a second notifying unit 130, configured to notify the first terminal to switch to the second base station based on the first measurement result information.
The second notifying unit 130 is further configured to notify the first terminal to measure a second signal transmitted by the second base station;
the first receiving unit 120 is further configured to receive second measurement result information formed by the first terminal measuring the second signal;
the second notifying unit 130 is specifically configured to notify the first terminal to switch to the second base station by combining the first measurement result information and the second measurement result information.
In this embodiment, specific structures of the second notification unit 130 and the first receiving unit 120 may refer to the first device embodiment, but in this embodiment, the second notification unit 130 further multiplexes to send a message or an instruction to the first terminal, and notifies the first terminal to measure a second signal sent by a second base station, so as to form second measurement result information; the first receiving unit 120 further multiplexes and receives second measurement result information formed by the first terminal measuring the second signal, and notifies the first terminal of the handover by using a second notifying unit 130 in combination with the first measurement result information and the second measurement result information.
In this embodiment, the first base station may determine to notify the first terminal of the handover by combining measurements of the first terminal and the second base station, so that the handover may be controlled more accurately, and the handover success rate may be improved.
Device example five:
as shown in fig. 5, the present embodiment provides a base station, which is a first base station; the first base station includes:
a first notifying unit 110, configured to notify the second base station to measure the first signal transmitted by the first terminal;
a first receiving unit 120, configured to receive first measurement result information measured by the second base station on the first signal;
a second notifying unit 130, configured to notify the first terminal to switch to the second base station based on the first measurement result information.
The first notifying unit 110 is specifically configured to notify the second base station to measure a channel sounding reference signal SRS and/or a demodulation reference signal DMRS transmitted by the first terminal.
In this embodiment, the first notification unit 110 notifies the second base station to measure the SRS and/or DMRS signal sent by the first terminal, but not all signals, so that the blindness of the second base station in measuring the signal transmitted by the first terminal can be avoided.
In short, the first base station in this embodiment can execute the information processing method applied to the execution main body such as the first base station, and can perform measurement in time, and can improve the success rate of switching between base stations by the terminal.
Device example six:
as shown in fig. 6, the present embodiment provides a base station, which is a second base station; the second base station includes:
a second receiving unit 210, configured to receive a notification of the first base station;
a measuring unit 220, configured to measure a first signal transmitted by a first terminal based on the notification from the first base station, and obtain first measurement result information;
a sending unit 230, configured to send the first measurement result information to the first base station; wherein the first measurement result information is used as a basis for the first base station to inform the first terminal of switching to the second base station.
In this embodiment, the second base station may be a different base station from the first base station. The first base station may be a base station such as an evolved node b (eNB), and the second base station may be a small base station or a small cell base station, such as a home base station.
The second receiving unit 220 may be a communication interface capable of communicating with the first base station, such as an X2 interface.
The measurement unit 220 may include a communication interface capable of receiving a first signal transmitted by the first terminal, and may also include a signal detection structure and the like, capable of measuring the signal quality of the received first signal. The signal quality here may include information such as the received signal power of the first signal received by the second base station.
The sending unit 230 also includes a communication interface, such as an X2 interface, for communicating with the first base station, and sends the first measurement result information to the first base station, so that the first base station can make a decision on handover of the first terminal conveniently.
In this embodiment, the second base station may perform measurement on the first signal, so that the measurement load of the first terminal may be graded, thereby reducing measurement delay, and improving measurement efficiency and handover success rate.
In a specific implementation process, the measurement unit 220 performs n measurements on the first signal sent by the first terminal within a first specified time according to the notification of the first base station; the n can be an integer not less than 1, and the n signal qualities formed after n times of measurement can be convenient for the first base station to more accurately select the second base station suitable for the first terminal to switch according to the change trend of the signal quality measured by the second base station.
Several specific examples are provided below in conjunction with any of the embodiments described above.
Example one:
after introducing dual connectivity in a heterogeneous network, a method for separating a control plane from a user plane is adopted: the connection between the terminal (here, the terminal may be the first terminal) and the macro base station (here, the macro base station may be the first base station) is used to transmit control plane signaling and low-rate user data, while the connection between the terminal and the small base station (here, the small base station may be the second base station) is mainly used to transmit high-rate user data.
When the terminal moves in the heterogeneous network at a certain speed (for example, 20km/h) or below, the handover may be performed in combination with the above method, and the specific process may be as follows:
s1: and the terminal enters a dual-connection state and measures the signal quality of the current serving small cell. The entering of the dual-connection state means that the terminal enters the connection access state after establishing connection with the macro base station and the small base station respectively.
S2: and judging whether the signal strength of the serving small cell is greater than a first threshold value, if so, returning to S1, and otherwise, entering S3. Specific implementations herein may include: and the macro base station configures the downlink signal quality of the serving small cell before the terminal is measured, and if the measured result is greater than the first serving small cell threshold value.
S3: and the terminal reports the measurement result by using the event A2, and the macro base station starts the search and measurement of the adjacent small cell of the terminal. Specifically, after the macro base station receives an a2 event of the terminal, the macro base station configures the terminal to perform measurement of the serving cell and the neighboring cell at the same time.
S4: and the macro base station informs the small base station nearby the terminal of measuring the uplink SRS signal strength of the terminal according to the position of the terminal. The method specifically comprises the following steps: and informing the small base stations adjacent to the terminal to measure the uplink SRS signal of the mobile terminal. And the uplink SRS signal result of the terminal measured by the small base station is directly reported to the base station through an X2-C interface between the macro base station and the small base station. Here, the SRS signal strength may be one of the signal qualities, and may be a part of the first measurement result information.
S5: and judging that the signal quality of the serving small cell is reduced to a second threshold value, if not, entering S6, and if so, entering S7. If the terminal measures that the current serving cell is below the second threshold, the result is reported as event a 2.
S6: the signal quality of the neighboring small cell is higher than that of the serving small cell by an offset value, and is maintained for a period of time, and the terminal reports a3 time. The steps may specifically include: the terminal measures the downlink signals of the neighboring small cell and the current serving small cell, and if the quality of the downlink signal of the neighboring small cell is higher than that of the serving small cell by an offset and is maintained for a period of time, the terminal reports the measurement result as event a 3.
S7: and the macro base station selects a target small cell to control the terminal switching according to the SRS signal result measured by the adjacent small base station. The SRS signal result is one of the second measurement results. This step may include: and if the macro base station receives the event A3 reported by the terminal, selecting a target small cell by using the measurement result reported by the event A3, and switching immediately. If the macro base station does not wait for the event A3, (because the adjacent small cell measurement time is long), the event A2 reported by the terminal is received, and a small base station with the strongest uplink SRS signal of the terminal is immediately obtained from the small base station adjacent to the terminal in a measurement manner and is used as a target small cell for switching. In general, among small base stations, 1 small base station has only one small cell. Here, the control terminal switches, and the control terminal penguin ring is connected to the target small cell.
S8: and the macro base station selects a target small cell to control the terminal switching according to the result of the adjacent cell measured by the terminal. The list of neighboring cell results may be the aforementioned second measurement result information.
Fig. 8 shows a schematic representation of the measurement signal formed during the measurement process. The distance between the terminal and the serving small base station is represented on the horizontal axis of fig. 8; reference signal received power RSRP as indicated by the ordinate. Here, reference received power RSRP is one of signal qualities. The power of the serving cell measured for the terminal is represented by the solid curve in fig. 8, from which the serving cell signal quality decreases as the distance between the terminal and the serving cell base station increases. The dashed curve is the power of the neighbor cell measured by the terminal. And the dotted curve represents the power of the terminal uplink SRS measured by the small base station. Also shown in fig. 8 are offsets, the timing of event a2 reporting and event A3 reporting.
Example two:
as shown in fig. 9, control plane signaling and information transmission in the low rate part of the user plane are performed between the terminal and the macro base station. And the terminal and the source small base station (namely the small cell providing service for the terminal) carry out information transmission of a high-speed part on a user plane. The terminal here is the aforementioned first terminal. The macro base station may be the aforementioned first base station.
And the terminal detects that the signal quality of the serving small cell is lower than an absolute threshold value, and sends a serving small cell measurement report to the macro base station. Here the terminal reports to the macro base station as event a 2.
The macro base station turns on an adjacent small cell measurement of the UE. Here, the UE is the terminal.
And the macro base station informs the small base stations around the UE of measuring the uplink SRS signal of the UE.
The neighboring small cell measures the SRS signal transmitted by the UE.
And reporting the SRS signal result of the UE to the macro base station by the adjacent small base station.
The terminal neighbor small cell measurement report is typically reported as event a 3.
And the macro base station continues the selection of the target small cell and the judgment of the switching time. The target small cell is selected from among the neighboring small cells.
The macro base station sends a handover request to the target small cell and receives a handover response from the target small cell.
The macro base station sends the RRC connection reconfiguration to the terminal, which here corresponds to the aforementioned notification of the handover of the first terminal to the second base station.
The terminal synchronizes with the target small cell.
And the terminal RRC connection configuration is completed.
And the macro base station releases the connection between the UE and the source small base station.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. An information processing method, the method comprising:
detecting that the signal quality of a first terminal to a 1 st cell formed at a first base station and serving the first terminal is lower than a specified threshold;
informing a second base station to measure a first signal transmitted by the first terminal; wherein the informing the second base station to measure the first signal transmitted by the first terminal comprises: informing the second base station to measure the first signal for n times at different moments in a first designated time so as to obtain n signal qualities; wherein n is an integer not less than 2;
wherein the notifying the second base station to measure the first signal transmitted by the first terminal further comprises: informing the second base station to measure a channel Sounding Reference Signal (SRS) and/or a demodulation reference signal (DMRS) transmitted by the first terminal;
receiving first measurement result information measured by the second base station on the first signal;
notifying the first terminal to switch to the second base station based on the first measurement result information; wherein the notifying the first terminal to be handed over to the second base station based on the first measurement result information includes: and informing the first terminal to switch to the second base station based on the variation trend of the n signal qualities.
2. The method of claim 1,
the notifying the first terminal to be handed over to the second base station based on the first measurement result information includes:
and informing the first terminal to switch to the second base station based on at least two pieces of first measurement result information measured by the second base station.
3. The method of claim 1,
the method further comprises the following steps:
informing the first terminal to measure a second signal transmitted by the second base station;
receiving second measurement result information formed by the first terminal on the second signal measurement;
the notifying the first terminal to be handed over to the second base station based on the first measurement result information includes:
and combining the first measurement result information and the second measurement result information to inform the first terminal to switch to the second base station.
4. An information processing method, the method comprising:
receiving a notification of a first base station; wherein the condition for triggering the first base station to notify the second base station to perform measurement includes: the first base station detects that the signal quality of a first terminal to a 1 st cell formed by the first base station and used for providing service for the first terminal is lower than a specified threshold value;
measuring a first signal transmitted by a first terminal based on the notification of the first base station to obtain first measurement result information; wherein the measuring a first signal transmitted by a first terminal based on the notification of the first base station comprises: based on the notification of the first base station, measuring the first signal for n times at different moments in a first specified time so as to obtain n signal qualities; wherein n is an integer not less than 2;
the first signal transmitted by the first terminal comprises: a channel Sounding Reference Signal (SRS) and/or a demodulation reference signal (DMRS) transmitted by the first terminal;
transmitting the first measurement result information to the first base station; wherein the first measurement result information is used as a basis for the first base station to inform the first terminal of switching to the second base station;
wherein the first measurement result information is used as a basis for the first base station to notify the first terminal to switch to the second base station, and includes: the variation trend of the n signal qualities is used as a basis for the first base station to inform the first terminal of switching.
5. A base station, the base station being a first base station; the first base station includes:
the first notification unit is used for notifying the second base station to measure a first signal transmitted by the first terminal when detecting that the signal quality of the first terminal to a 1 st cell which is formed by the first base station and provides service for the first terminal is lower than a specified threshold value; the first notifying unit is specifically configured to notify the second base station to perform n measurements on the first signal at different times within a first specified time so as to obtain n signal qualities; wherein n is an integer not less than 2;
the first notifying unit is specifically configured to notify the second base station to measure a channel sounding reference signal SRS and/or a demodulation reference signal DMRS transmitted by the first terminal;
a first receiving unit, configured to receive first measurement result information measured by the second base station on the first signal;
a second notifying unit, configured to notify the first terminal to switch to the second base station based on the first measurement result information; the second notifying unit is specifically configured to notify the first terminal to switch to the second base station based on a variation trend of the n signal qualities.
6. The base station of claim 5,
the second notifying unit is specifically configured to notify the first terminal to switch to the second base station based on at least two pieces of first measurement result information measured by the second base station.
7. The base station of claim 5,
the second notifying unit is further configured to notify the first terminal to measure a second signal transmitted by the second base station;
the first receiving unit is further configured to receive second measurement result information formed by the first terminal measuring the second signal;
the second notifying unit is specifically configured to, in combination with the first measurement result information and the second measurement result information, notify the first terminal to switch to the second base station.
8. A base station, the base station being a second base station; the second base station includes:
a second receiving unit for receiving a notification of the first base station; wherein the condition for triggering the first base station to notify the second base station to perform measurement includes: the first base station detects that the signal quality of a first terminal to a 1 st cell formed by the first base station and used for providing service for the first terminal is lower than a specified threshold value;
a measuring unit, configured to measure a first signal transmitted by a first terminal based on the notification of the first base station, and obtain first measurement result information; wherein the measuring a first signal transmitted by a first terminal based on the notification of the first base station comprises: based on the notification of the first base station, measuring the first signal for n times at different moments in a first specified time so as to obtain n signal qualities; wherein n is an integer not less than 2;
the first signal transmitted by the first terminal comprises: a channel Sounding Reference Signal (SRS) and/or a demodulation reference signal (DMRS) transmitted by the first terminal;
a sending unit, configured to send the first measurement result information to the first base station; wherein the first measurement result information is used as a basis for the first base station to inform the first terminal of switching to the second base station; wherein the first measurement result information is used as a basis for the first base station to notify the first terminal to switch to the second base station, and includes: the variation trend of the n signal qualities is used as a basis for the first base station to inform the first terminal of switching.
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| CN109587722A (en) * | 2017-09-28 | 2019-04-05 | 中兴通讯股份有限公司 | A kind of data transmission method and data transmission device |
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| US9439120B2 (en) * | 2012-09-28 | 2016-09-06 | Nokia Technologies Oy | Method and apparatus for managing information in a network |
| CN103813360B (en) * | 2012-11-13 | 2017-05-03 | 中国移动通信集团公司 | Base station activating method and base station state converting method, system and device |
| CN103841613B (en) * | 2012-11-23 | 2017-10-27 | 京信通信系统（中国）有限公司 | A kind of cell switching method and device |
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| CN1437834A (en) * | 1999-12-29 | 2003-08-20 | 高通股份有限公司 | Improved soft handoff algorithm and wireless communication system for third generation CDMA systems |
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