CN103220632A - Trunking system downgoing covering self-adaptive adjusting method, base station and cluster user equipment - Google Patents
Trunking system downgoing covering self-adaptive adjusting method, base station and cluster user equipment Download PDFInfo
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Abstract
The invention provides a trunking system downgoing covering self-adaptive adjusting method, eNB and cluster user equipment (UE). The cluster UE detects downgoing signals according to obtained measurement configuration information which comprises downgoing signal measuring parameters and quality threshold. When a measuring value of the downgoing signal measuring parameters is lower than the quality threshold, the cluster UE reports downgoing signal quality to the eNB, and the eNB adjusts downgoing launching power and/or MCS according to the quantity of the cluster UE reporting downgoing signal quality, wherein the quantity of the cluster UE is obtained through statistics. By means of the trunking system downgoing covering self-adaptive adjusting method, the eNB and the cluster UE, downgoing covering can be adjusted in a self-adaptation mode according to the downgoing signal quality received by the cluster UE, and downgoing covering effect is improved.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to the descending covering self-adapting regulation method of a kind of group system, base station (Evolution Node B is called for short eNB) and user equipment in group (User Equipment is called for short UE).
Background technology
In Long Term Evolution (Long Term Evolution is called for short LTE) group system, carry out towards the group communication of the point-to-multipoint of sub-district usually at down direction.In the existing LTE group system, be not connected between the UE of group and the eNB, eNB fixedly installs according to being preconfigured to descending covering, comprises power setting and modulation and coding strategy (Modulation and Coding Scheme is called for short MCS) setting.
The mode that fixedly installs power and MCS is adopted in descending covering, when the UE of group when the eNB, might cause down transmitting power waste and radio bearer (Radio Bearer, abbreviation RB) waste of resource, and as the UE of group during away from eNB, might cause descending covering not enough again, the weak effect of descending covering.
Summary of the invention
First aspect of the present invention provides the descending covering self-adapting regulation method of a kind of group system, in order to solve defective of the prior art, improves descending coverage effect.
Another aspect of the present invention provides a kind of eNB and the UE of group, in order to solve defective of the prior art, improves descending coverage effect.
First aspect of the present invention provides the descending covering self-adapting regulation method of a kind of group system, comprising:
User equipment in group UE detects downstream signal according to the measurement configuration information of obtaining, and described measurement configuration information comprises: downstream signal measurement parameter and quality threshold;
When the measured value of described downstream signal measurement parameter is lower than described quality threshold, the described UE of group carries out downlink signal quality to base station eNB and reports, so that described eNB adjusts down transmitting power and/or modulation and coding strategy MCS according to the quantity of carrying out the UE of group that downlink signal quality reports that statistics obtains.
Aforesaid method, wherein, the described UE of group detects before the downstream signal according to the measurement configuration information of obtaining, and also comprises:
The described UE of group obtains the system message of carrying described measurement configuration information from eNB;
Or the described UE of group obtains the special-purpose beep-page message from the group of carrying described measurement configuration information of eNB;
Or the described UE of group obtains the described measurement configuration information of human configuration.
Aforesaid method, wherein,
The described UE of group carries out before downlink signal quality reports to eNB, also comprise: the described UE of group obtains the system message of carrying Physical Random Access Channel PRACH configuration information from eNB, or, the described UE of group obtains the special-purpose beep-page message from the group of the described PRACH configuration information of carrying of eNB, or the described UE of group obtains the described PRACH configuration information of human configuration; The described UE of group carries out downlink signal quality to eNB and reports and comprise: the described UE of group is according to described PRACH configuration information, sends to described eNB at PRACH and inserts request message at random, and described the access in the request message at random comprises: the sign ID of the described UE of group;
Or, the described UE of group carries out downlink signal quality to eNB and reports and comprise: the described UE of group sends radio resource control RRC connection request message to described eNB, comprises in the described RRC connection request message: be used to indicate the Radio Network Temporary Identifier RNTI that reports group under the former because information of downlink signal quality difference, the described UE of group and the ID of the described UE of group.
Aforesaid method, wherein,
Described PRACH configuration information comprises: the ID delivery to the described UE of group, available PRACH is numbered, the described UE of group described delivery as a result the PRACH of the numbering of correspondence send the described request message that inserts at random.
And/or described PRACH configuration information comprises: when the shared same PRACH of two or more described UE of group that belong to the distinct group group, the UE that belongs to different groups adopts the different running time-frequency resources of described PRACH to initiate the described request message that inserts at random;
And/or described PRACH configuration information comprises: length of timer information; The described UE of group at random inserts request message at PRACH to described eNB transmission according to described PRACH configuration information and comprises: the described UE of group is at every turn when the eNB transmission inserts request message at random, open described timer, when the measured value of described downstream signal measurement parameter was lower than described quality threshold and described timer expiry, the described UE of group sent to eNB once more and inserts request message at random.
Another aspect of the present invention provides the descending covering self-adapting regulation method of a kind of group system, comprising:
The downlink signal quality that base station eNB is obtained from user equipment in group UE reports, described downlink signal quality reports by the UE of group and detects downstream signal according to the measurement configuration information of obtaining, report when the measured value of descending signal measurement parameter is lower than quality threshold, described measurement configuration information comprises: described downstream signal measurement parameter and described quality threshold;
Described eNB adjusts down transmitting power and/or modulation and coding strategy MCS according to the quantity of carrying out the UE of group that downlink signal quality reports that statistics obtains.
Aforesaid method, wherein, described eNB obtains before downlink signal quality from the UE of group reports, and also comprises:
Described eNB sends the system message of carrying described measurement configuration information to the described UE of group;
Or described eNB sends the special-purpose beep-page message of the group of carrying described measurement configuration information to the described UE of group.
Aforesaid method, wherein, described eNB obtains downlink signal quality from the UE of group and reports and comprise:
Described eNB receives the request message of access at random that the described UE of group sends at PRACH according to the Physical Random Access Channel PRACH configuration information that obtains, and described the access in the request message at random comprises: the sign ID of the described UE of group;
Or described eNB receives the radio resource control RRC connection request message that the described UE of group sends, and comprises in the described RRC connection request message: be used to indicate report former because information, the RNTI of described group and the ID of the described UE of group of downlink signal quality difference.
Aforesaid method, wherein, described eNB obtains before downlink signal quality from the UE of group reports, and also comprises:
Described eNB sends the system message of carrying described PRACH configuration information to the described UE of group;
Or described eNB sends the special-purpose beep-page message of the group of carrying described PRACH configuration information to the described UE of group.
Another aspect of the present invention provides a kind of user equipment in group UE, comprising:
Detecting unit is used for detecting downstream signal according to the measurement configuration information of obtaining, and described measurement configuration information comprises: downstream signal measurement parameter and quality threshold;
Report the unit, be used for when the measured value of described downstream signal measurement parameter is lower than described quality threshold, carry out downlink signal quality to base station eNB and report, so that described eNB is according to UE quantity adjustment down transmitting power and/or the modulation and the coding strategy MCS that downlink signal quality reports that carry out of statistics acquisition.
The aforesaid UE of group, wherein,
The described UE of group also comprises: acquiring unit; Described acquiring unit is used to obtain the system message of carrying Physical Random Access Channel PRACH configuration information from eNB, or, be used to obtain special-purpose beep-page message from the group of the described PRACH configuration information of carrying of eNB, or, be used to obtain the described PRACH configuration information of human configuration; The described unit that reports specifically is used for according to described PRACH configuration information, sends to described eNB at PRACH and inserts request message at random, and described the access in the request message at random comprises: the sign ID of the described UE of group;
Or, the described unit that reports specifically is used for sending radio resource control RRC connection request message to described eNB, comprises in the described RRC connection request message: be used to indicate report former because the information of downlink signal quality difference, the RNTI of the affiliated group of the described UE of group and the ID of the described UE of group.
Another aspect of the present invention provides a kind of base station eNB, comprising:
Acquiring unit, the downlink signal quality that is used to obtain from user equipment in group UE reports, described downlink signal quality reports by the UE of group and detects downstream signal according to the measurement configuration information of obtaining, report when the measured value of descending signal measurement parameter is lower than quality threshold, described measurement configuration information comprises: described downstream signal measurement parameter and described quality threshold;
Descending control unit is used for UE quantity adjustment down transmitting power and/or modulation and the coding strategy MCS that downlink signal quality reports that carry out according to the statistics acquisition.
Aforesaid eNB, wherein,
Described acquiring unit specifically is used to receive the request message of access at random that the described UE of group sends at PRACH according to the PRACH configuration information that obtains, and described the access in the request message at random comprises: the sign ID of the described UE of group;
Or, described acquiring unit specifically is used to receive the radio resource control RRC connection request message that the described UE of group sends, and comprises in the described RRC connection request message: be used to indicate report former because the information of downlink signal quality difference, the RNTI of the affiliated group of the described UE of group and the ID of the described UE of group.
According to the foregoing invention content as seen, the UE of group in the trunked communication system detects the quality of downstream signal, when descending quality of signals is lower than the quality threshold of configuration, carries out downlink signal quality to eNB and reports.When making the downlink signal quality difference of the UE of group, eNB can in time be known the downlink signal quality situation of this UE.Thereby eNB can pass through the quantity of the UE of group of statistics downlink signal quality difference, adjusts descending covering according to statistics.Because the quality situation of the downstream signal that eNB can receive according to UE is carried out the self adaptation adjustment to descending covering, therefore can avoid the descending situation that not enough and descending covering is wasted that covers, and improves descending coverage effect.
Description of drawings
Fig. 1 is the flow chart of the descending covering self-adapting regulation method of the group system of the embodiment of the invention one;
Fig. 2 is the flow chart of the descending covering self-adapting regulation method of the group system of the embodiment of the invention two;
Fig. 3 is the flow chart of the descending covering self-adapting regulation method of the group system of the embodiment of the invention three;
Fig. 4 is the flow chart of the descending covering self-adapting regulation method of the group system of the embodiment of the invention four;
Fig. 5 is the structural representation of the UE of group of the embodiment of the invention five;
Fig. 6 is the structural representation of the eNB of the embodiment of the invention six.
Embodiment
Fig. 1 is the flow chart of the descending covering self-adapting regulation method of the group system of the embodiment of the invention one.As shown in Figure 1, this method comprises following process.
Step 101: the UE of group detects downstream signal according to the measurement configuration information of obtaining.
In this step, measurement configuration information comprises: downstream signal measurement parameter and quality threshold.
Step 102: when the measured value of descending signal measurement parameter was lower than quality threshold, the UE of group carried out downlink signal quality to eNB and reports.
In this step, when the measured value of descending signal measurement parameter is lower than quality threshold, the UE of group carries out downlink signal quality to eNB and reports, so that eNB adjusts down transmitting power and/or MCS according to the quantity of carrying out the UE of group that downlink signal quality reports that statistics obtains.
In the embodiment of the invention one, the UE of group in the trunked communication system detects the quality of downstream signal, when descending quality of signals is lower than the quality threshold of configuration, carrying out downlink signal quality to eNB reports, when making the downlink signal quality difference of the UE of group, eNB can in time be known the downlink signal quality situation of this UE, thereby eNB can pass through the quantity of the UE of group of statistics downlink signal quality difference, adjusts descending covering according to statistics.Because the quality situation of the downstream signal that eNB can receive according to UE is carried out the self adaptation adjustment to descending covering, therefore can avoid the descending situation that not enough and descending covering is wasted that covers, and improves descending coverage effect.
Fig. 2 is the flow chart of the descending covering self-adapting regulation method of the group system of the embodiment of the invention two.As shown in Figure 2, this method comprises following process.
The downlink signal quality that step 201:eNB obtains from the UE of group reports.
In this step, this downlink signal quality reports by the UE of group and detects downstream signal according to the measurement configuration information of obtaining, and reports when the measured value of descending signal measurement parameter is lower than quality threshold.This measurement configuration information comprises: downstream signal measurement parameter and quality threshold.
Step 202:eNB statistics obtains carries out the quantity of the UE of group that downlink signal quality reports, adjusts down transmitting power and/or MCS.
In the embodiment of the invention two, during the downlink signal quality difference of the UE of group, the downlink signal quality that eNB can get access to from the UE of group reports, thereby eNB can in time be known the downlink signal quality situation of this UE, the quantity of the UE of group by statistics downlink signal quality difference is adjusted descending covering according to statistics.Because the quality situation of the downstream signal that eNB can receive according to UE is carried out the self adaptation adjustment to descending covering, therefore can avoid the descending situation that not enough and descending covering is wasted that covers, and improves descending coverage effect.
Fig. 3 is the flow chart of the descending covering self-adapting regulation method of the group system of the embodiment of the invention three.In the embodiment of the invention three, report and be example to adopt Physical Random Access Channel (Physical Random AccessChannel is called for short PRACH) to carry out downlink signal quality.As shown in Figure 3, this method comprises following process.
Step 301: the UE of group obtains measurement configuration information.
In this step, the UE of group can take multiple mode to obtain measurement configuration information, is in the example in the present invention, and the concrete mode of the UE of group being obtained measurement configuration information does not limit.Preferably, the UE of group can take in following three kinds of modes any one to obtain measurement configuration information, comprise: mode one, eNB are carrying measurement configuration information in the system message of the UE of group broadcasting, the UE of group obtains the system message of carrying measurement configuration information from eNB.Mode two, eNB carry measurement configuration information in the special-purpose beep-page message of the group that sends to the UE of group, the UE of group obtains the special-purpose beep-page message from the group of carrying measurement configuration information of eNB.Mode three, adopt the mode of human configuration in advance, be the UE of group allocating and measuring configuration information, the UE of group obtains the measurement configuration information of human configuration.
Step 302: the UE of group detects downstream signal according to the measurement configuration information of obtaining.
In this step, comprise in this measurement configuration information: downstream signal measurement parameter and quality threshold.This downstream signal measurement parameter can adopt the multiple parameter that can represent downlink signal quality, for example, particularly, this downstream signal measurement parameter can be Block Error Rate (Block Error Ratio, abbreviation BLER), signal to noise ratio (Signal to Noise Ratio is called for short SNR) or path loss.This quality threshold is the thresholding of above-mentioned measurement parameter correspondence, and for example: when measurement parameter was BLER, quality threshold was the BLER thresholding; When measurement parameter was SNR, quality threshold was the SNR thresholding, and when measurement parameter was path loss, quality threshold was a line loss threshold.And, can also be included in other parameter that needs in the process that the above-mentioned measurement parameter of downstream signal is measured in this measurement configuration information, for example measuring period, filter factor etc.
Step 303: the UE of group obtains the PRACH configuration information.
In this step, the UE of group can take multiple mode to obtain the PRACH configuration information, is in the example in the present invention, and the concrete mode of the UE of group being obtained the PRACH configuration information does not limit.Preferably, the UE of group can take in following three kinds of modes any one to obtain the PRACH configuration information, comprise: mode one, eNB are carrying the PRACH configuration information in the system message of the UE of group broadcasting, the UE of group obtains the system message of carrying the PRACH configuration information from eNB.Mode two, eNB carry the PRACH configuration information in the special-purpose beep-page message of the group that sends to the UE of group, the UE of group obtains the special-purpose beep-page message from the group of carrying the PRACH configuration information of eNB.Mode three, adopting the mode of human configuration in advance, is the UE of group configuration PRACH configuration information, and the UE of group obtains the PRACH configuration information of human configuration.
In this step, the PRACH configuration information is used for the PRACH that indicates this UE to adopt to the UE of group, is the method that the UE of group distributes PRACH.In the LTE system, there is the PRACH resource of some.Stipulate in the prior LTE system, sub-district can with the sequence number of PRACH be 64, be divided into two classes: a class belongs to non-competing pattern, the another kind of competitive mode that belongs to.Wherein, non-competing pattern is mainly used in scenes such as switching, by which PRACH sequence of high-level signaling indication UE can use, thereby accelerate the process that UE inserts, and avoids occurring many UE competitions and the generation time-delay.In embodiments of the present invention, give group allocation PRACH sequence, but specify access-in resource, make the UE of this group when satisfying the described trigger condition of following step 304, use the PRACH resource of distributing to send up PRACH signal by the PRACH configuration information.In embodiments of the present invention, limit distribute the concrete grammar of PRACH for the UE of group, can adopt several different methods is that the UE of group distributes PRACH, below wherein several preferably distribution methods of introduction only.
Mode one can comprise in this PRACH configuration information: the ID delivery to the UE of group, available PRACH is numbered, and the UE of this group inserts request message at random in the delivery PRACH transmission of the numbering of correspondence as a result.Owing to have a lot of UE in a group, a lot of UE therefore might occur all needs to carry out downlink signal quality and reports, if the PRACH resource is very few, may cause a lot of UE to use the situation of a PRACH resource simultaneously.In order to slow down this impact, the distribution method of employing mode one is numbered the available PRACH resource of this group in a time cycle, and UE is according to the UE ID of self, is mapped on the PRACH resource by the mode of delivery, thereby disperses the load of PRACH.For example, setting 100ms is an one-period, in this cycle this group can with the PRACH resource be 300, a Transmission Time Interval (Transmission Time Interval is called for short TTI) is 1 millisecond so, in a TTI (promptly 1 millisecond), with available PRACH resource number, press frequency domain from low to high, increase progressively numbering in order, at next TTI, continue to increase progressively in order numbering.Similarly, also can be in one-period, after arriving by time domain is before, increase progressively numbering in order, in next cycle, continue to increase progressively in order numbering.
Mode two can comprise in this PRACH configuration information: when the shared same PRACH of the UE of two or more groups that belongs to the distinct group group, the UE that belongs to different groups adopts the different running time-frequency resources of PRACH to initiate to insert at random request message.Since maximum 64 PRACH sequences in sub-district of agreement regulation, if a group takies a PRACH, when group number is many, the lazy weight of PRACH sequence.In this case, can dispose two shared PRACH sequences of group, but distinguish by running time-frequency resource, that is: the different running time-frequency resource of the different employing PRACH of group makes it not overlapped.For example, two shared PRACH sequences of group, one of them group can only use in the even number radio frames, and another can only use in the odd number radio frames.If the shared PRACH sequence of plural group then can define a time window, each group takies the time window of this PRACH, thereby group is separated in time window.Similarly, in time division duplex (Time Division Duplexing is called for short TDD) LTE system, the PRACH resource may have a plurality of on frequency domain at same TTI, therefore also can separate different groups on frequency domain.
Mode three, can comprise in this PRACH configuration information: length of timer information, the indication UE of group is opening timing device when the eNB transmission inserts request message at random at every turn, when the measured value of descending signal measurement parameter was lower than quality threshold and timer expiry, the UE of group sent to eNB once more and inserts request message at random.The detailed process of employing mode three comprises: when the UE of group sends when inserting request message at random the opening timing device to eNB.The UE of this group next time to eNB send insert request message at random before, judge whether this timer overtime earlier.If then the UE of this group sends to eNB once more and inserts request message at random, opens this timer simultaneously once more; Otherwise the UE of this group does not send to eNB and inserts request message at random.For example, this length of timer is 1 second, and then within 1 second, the UE of group can only send and once insert request message at random.
Aforesaid way one to mode three can be used separately, also can will wherein any two or three be used in combination.
Above-mentioned steps 302 is carried out after step 301, and step 303 can be carried out in any time of step 301 to the process of step 302 or in this process.
After step 303, when the measured value of descending signal measurement parameter was lower than quality threshold, the UE of group carried out downlink signal quality to eNB and reports, and specifically may further comprise the steps 304.
Step 304: when the measured value of descending signal measurement parameter was lower than quality threshold, the UE of group at random inserted request message at PRACH to the eNB transmission according to the PRACH configuration information that obtains.
In this step, when measurement result is represented current downlink signal quality specific mass thresholding difference, for example, when the BLER of descending signal value is higher than corresponding BLER thresholding, perhaps when the SNR of descending signal value is lower than corresponding SNR thresholding, perhaps when the circuit loss value of descending signal was higher than corresponding line loss threshold, the UE of group thought that the measured value of current downstream signal measurement parameter is lower than quality threshold, thereby inserted request message at PRACH at random to the eNB transmission.When comprising measuring period in the measurement configuration information, the UE of group carries out the measured value and the quality threshold of the downstream signal measurement parameter in the measuring period, for example: when the BLER value of downstream signal in the measuring period is higher than corresponding BLER thresholding all the time, perhaps when the SNR mean value of downstream signal in the measuring period is lower than corresponding SNR thresholding, perhaps when the circuit loss value of downstream signal in the measuring period was higher than corresponding line loss threshold all the time, the UE of group thought that the measured value of current downstream signal measurement parameter is lower than quality threshold.This inserts in the request message at random and comprises: the ID of the UE of group.According to three kinds of modes of above-mentioned PRACH configuration information, the UE of group sends the mode difference that inserts request message at random at PRACH to eNB.For the mode one of PRACH configuration information, the ID delivery to the UE of group is numbered available PRACH, and the UE of this group inserts request message at random in the delivery PRACH transmission of the numbering of correspondence as a result.For the mode two of PRACH configuration information, if UE of this group and the shared same PRACH of other UE that belongs to different groups, the UE that then belongs to different groups adopts the different running time-frequency resources of this PRACH to initiate to insert at random request message.Mode three for the PRACH configuration information, the UE of this group is opening timing device when the eNB transmission inserts request message at random at every turn, only when the measured value of descending signal measurement parameter was lower than quality threshold and timer expiry, the UE of this group sent to eNB once more and inserts request message at random.When the UE of group sends when inserting request message at random the opening timing device to eNB.The UE of this group next time to eNB send insert request message at random before, judge whether this timer overtime earlier.If then the UE of this group sends to eNB once more and inserts request message at random, opens this timer simultaneously once more; Otherwise the UE of this group does not send to eNB and inserts request message at random.
Step 305:eNB adjusts down transmitting power and/or MCS according to the quantity of carrying out the UE of group that downlink signal quality reports that statistics obtains.
In this step, eNB adds up the quantity of the UE of group that carries out downlink signal quality and report, according to statistics, adjusts down transmitting power and/or MCS.For example, if such the PRACH time number that eNB receives in a period of time T1, then raises down transmitting power greater than a thresholding or reduces MCS.If eNB does not receive such PRACH in a period of time T2, then reduce down transmitting power or improve MCS.The time span of above-mentioned T1 and T2 all can be according to needs flexible configuration in eNB of real network environment.
In the embodiment of the invention three, the UE of group in the trunked communication system detects the quality of downstream signal, when descending quality of signals is lower than the quality threshold of configuration, carrying out downlink signal quality to eNB reports, when making the downlink signal quality difference of the UE of group, eNB can in time be known the downlink signal quality situation of this UE, thereby eNB can pass through the quantity of the UE of group of statistics downlink signal quality difference, adjusts descending covering according to statistics.Because the quality situation of the downstream signal that eNB can receive according to UE is carried out the self adaptation adjustment to descending covering, therefore can avoid the descending situation that not enough and descending covering is wasted that covers, and improves descending coverage effect.And, by being the UE of group configuration suitable substance P RACH, the UE of group can initiate to insert at random request on the PRACH resource of configuration, thereby it is not good to eNB notice downlink signal quality, but eNB can't insert request at random to this and make accidental access response, but have or not number according to what this reported, trigger the adjustment of descending covering.
Fig. 4 is the flow chart of the descending covering self-adapting regulation method of the group system of the embodiment of the invention four.In the embodiment of the invention four, report and be example to adopt Radio Resource control (Radio Resource Control is called for short RRC) connection request message to carry out downlink signal quality.As shown in Figure 4, this method comprises following process.
Step 401: the UE of group obtains measurement configuration information.
The detailed process of this step is identical with step 301 among the invention described above embodiment three, does not repeat them here.
Step 402: the UE of group detects downstream signal according to the measurement configuration information of obtaining.
The detailed process of this step is identical with step 402 among the invention described above embodiment three, does not repeat them here.
After step 402, when the measured value of descending signal measurement parameter was lower than quality threshold, the UE of group carried out downlink signal quality to eNB and reports, and specifically may further comprise the steps 403.
Step 403: the UE of group sends RRC connection request message to eNB.
In this step, comprise in this RRC connection request message: be used to indicate report former because the ID of Radio Network Temporary Identifier of the information of downlink signal quality difference, the affiliated group of the UE of group (Radio NetworkTemporary Identifier is called for short RNTI) and the UE of group.Further, can also comprise in this RRC connection request message: the interim identification code of the UE of group (Temporary Mobile SubscriberIdentity is called for short TMSI).In embodiments of the present invention, for RRC connection request message increases the new reason that reports newly, this report former because: downlink signal quality is poor, increasing newly to be used to indicate in RRC connection request message reports former because the information of downlink signal quality difference, for example, this information can be expressed as " ptt-StatusReport ", thereby eNB is when receiving the RRC connection request message that comprises this information, and the UE of group that can know this monitoring users is because the not good state that carries out of downlink signal quality reports.ENB can distinguish according to TMSI number that carries in the RRC connection request message and be in the not quantity of the monitoring users of smooth state of group's monitoring in this sub-district.
After step 403, carry out between UE of group and the eNB alternately, realize that RRC connects foundation, comprises that specifically step 404 is to step 405.
Step 404:eNB sends the RRC connection to the UE of group and sets up message.
Step 405: the UE of group sends the RRC connection setup complete message to eNB.
After step 403, the quantity of carrying out the UE of group that downlink signal quality reports that eNB can obtain according to statistics is adjusted down transmitting power and/or MCS.Further, eNB can also be from core net (Evolution Core Network, be called for short eCN) obtain this eNB subordinate belong to the quantity of the UE of group of same group with the UE of this group, eNB belongs to the quantity of the UE of group of same group according to quantity of carrying out the UE of group that downlink signal quality reports and subordinate's with the UE of this group, adjust down transmitting power and/or MCS, particularly, may further comprise the steps 406 to step 407.
What step 406:eNB obtained this eNB subordinate from eCN belongs to the quantity of the UE of group of same group with the UE of this group.
In this step, particularly, can adopt any one or a few the combination of following method one to the method three.
Method one, on obtaining downlink signal quality from the UE of group for the first time, eNB gives the correct time, eNB sends the UE of group information request message to eCN, so that eCN returns the information of this eNB subordinate's the UE of group, what this eNB obtained this eNB subordinate from this information belongs to the quantity of the UE of group of same group with the UE of this group.After the reporting of the UE of group that receives for the first time monitoring users, can trigger eNB informs relevant groups in current area by S1 interface requirement eCN monitoring users quantity at eNB.
Receive for the first time report after, between the relevant groups active period, eNB does not need to require continually eCN to send monitoring users quantity under this group and this sub-district to eNB, and can adopt following method two and method three.
Method two, between group's active period, eNB can send the UE of group information request message to eCN according to predetermined period, so that eCN returns the information of this eNB subordinate's the UE of group, what this eNB obtained this eNB subordinate from this information belongs to the quantity of the UE of group of same group with the UE of this group.Owing to the monitoring quantity under the sub-district can not change continually, therefore, between group's active period, eNB sends above-mentioned solicited message according to predetermined period to eCN, requires eCN to send the quantity information of the monitoring users of relevant groups under certain sub-district to eNB.
Method three, when the quantity of the UE of group that reports from downlink signal quality to eNB reaches default thresholding, eNB sends the UE of group information request message to eCN, so that eCN returns the information of this eNB subordinate's the UE of group, what this eNB obtained this eNB subordinate from this information belongs to the quantity of the UE of group of same group with the UE of this group.
Step 407:eNB belongs to the quantity of the UE of group of same group according to the quantity of carrying out the UE of group that downlink signal quality reports and this eNB subordinate's with the UE of this group, adjusts down transmitting power and/or MCS.
In this step, in obtaining the sub-district after the quantity of the UE of group of monitoring users, eNB is according to the quantity of carrying out the UE of group that downlink signal quality reports, perhaps according to the quantity of carrying out the UE of group that downlink signal quality reports and this eNB subordinate belong to the ratio of quantity of the UE of group of same group with the UE of this group, determine whether to carry out the adjustment of transmitting power or MCS.
In the embodiment of the invention four, the UE of group in the trunked communication system detects the quality of downstream signal, when descending quality of signals is lower than the quality threshold of configuration, carrying out downlink signal quality to eNB reports, when making the downlink signal quality difference of the UE of group, eNB can in time be known the downlink signal quality situation of this UE, thereby eNB can pass through the quantity of the UE of group of statistics downlink signal quality difference, adjusts descending covering according to statistics.Because the quality situation of the downstream signal that eNB can receive according to UE is carried out the self adaptation adjustment to descending covering, therefore can avoid the descending situation that not enough and descending covering is wasted that covers, and improves descending coverage effect.And the UE of group gives the correct time on the downlink signal quality carrying out, and carries out downlink signal quality and reports by initiating process that RRC connects, and by this process, eNB can determine in a sub-district number of users that is in the not smooth state of reception is arranged according to the TMSI of UE.And, eNB determines to be in the sub-district number of users of listening state by S1 interface and eCN, determine whether to carry out the adjustment of descending covering by the ratio that is in the number of users of listening state in not smooth monitoring users quantity of descending reception and the sub-district, further improve the accuracy that right descending covering is adjusted, improved descending coverage effect.
Fig. 5 is the structural representation of the UE of group of the embodiment of the invention five.As shown in Figure 5, the UE of this group comprises at least: detecting unit 51 and report unit 52.
Wherein, detecting unit 51 is used for detecting downstream signal according to the measurement configuration information of obtaining.Measurement configuration information comprises: downstream signal measurement parameter and quality threshold.
In a kind of embodiment, on the basis of technique scheme, further, the UE of this group also comprises: acquiring unit 53.Acquiring unit 53 is used to obtain the system message of carrying the PRACH configuration information from eNB, or, acquiring unit 53 is used to obtain the special-purpose beep-page message from the group of carrying the PRACH configuration information of eNB, or acquiring unit 53 is used to obtain the PRACH configuration information of human configuration.Comprise under the situation of acquiring unit 53 at the UE of this group, correspondingly, report unit 52 specifically to be used for configuration information, send to eNB at PRACH and insert request message at random according to PRACH.Insert in the request message at random and comprise: the ID of the UE of group.Particularly, the PRACH configuration information can not repeat them here referring to the description in the embodiment of the invention three.
Perhaps, in another kind of embodiment, can not comprise above-mentioned acquiring unit 53 among the UE of this group.In the case, report unit 52 specifically to be used for sending RRC connection request message to eNB.Comprise in the RRC connection request message: be used to indicate report former because the information of downlink signal quality difference, the RNTI of the affiliated group of the UE of group and the ID of the UE of group.
In the embodiment of the invention five, the detecting unit of the UE of group in the trunked communication system detects the quality of downstream signal, and the UE of group reports the unit to carry out downlink signal quality to eNB when the quality of downstream signal is lower than the quality threshold of configuration to report.When making the downlink signal quality difference of the UE of group, eNB can in time be known the downlink signal quality situation of this UE, thereby the quantity of the UE of group that eNB can be by statistics downlink signal quality difference is adjusted descending covering according to statistics.Because the quality situation of the downstream signal that eNB can receive according to UE is carried out the self adaptation adjustment to descending covering, therefore can avoid the descending situation that not enough and descending covering is wasted that covers, and improves descending coverage effect.
Fig. 6 is the structural representation of the eNB of the embodiment of the invention six.As shown in Figure 6, this eNB comprises: acquiring unit 61 and descending control unit 62.
Wherein, acquiring unit 61 downlink signal quality that is used to obtain from the UE of group reports.This downlink signal quality reports by the UE of group and detects downstream signal according to the measurement configuration information of obtaining, and reports when the measured value of descending signal measurement parameter is lower than quality threshold.This measurement configuration information comprises: downstream signal measurement parameter and quality threshold.
In a kind of embodiment, acquiring unit 61 specifically is used to receive the request message of access at random that the UE of group sends at PRACH according to the PRACH configuration information that obtains.This inserts in the request message at random and comprises: the ID of the UE of group.On the basis of technique scheme, further,
Perhaps, in another kind of embodiment, acquiring unit 61 specifically is used to receive the RRC connection request message that the UE of group sends.Comprise in this RRC connection request message: be used to indicate report former because the information of downlink signal quality difference, the RNTI of the affiliated group of the UE of this group and the ID of the UE of this group.
In the embodiment of the invention six, when descending quality of signals was lower than the quality threshold of configuration, the downlink signal quality that the acquiring unit of eNB can obtain from the UE of group reported.When making the downlink signal quality difference of the UE of group, eNB can in time be known the downlink signal quality situation of this UE, thereby the quantity of the UE of group that the descending control unit of eNB can be by statistics downlink signal quality difference is adjusted descending covering according to statistics.Because the quality situation of the downstream signal that eNB can receive according to UE is carried out the self adaptation adjustment to descending covering, therefore can avoid the descending situation that not enough and descending covering is wasted that covers, and improves descending coverage effect.
The UE of group among the invention described above embodiment five and each component units of the eNB among the invention described above embodiment six with and carry out function and can not repeat them here referring to the record of the embodiment of the invention one to the embodiment of the invention four.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be finished by the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program is carried out the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (12)
1. the descending covering self-adapting regulation method of group system is characterized in that, comprising:
User equipment in group UE detects downstream signal according to the measurement configuration information of obtaining, and described measurement configuration information comprises: downstream signal measurement parameter and quality threshold;
When the measured value of described downstream signal measurement parameter is lower than described quality threshold, the described UE of group carries out downlink signal quality to base station eNB and reports, so that described eNB adjusts down transmitting power and/or modulation and coding strategy MCS according to the quantity of carrying out the UE of group that downlink signal quality reports that statistics obtains.
2. method according to claim 1 is characterized in that, the described UE of group detects before the downstream signal according to the measurement configuration information of obtaining, and also comprises:
The described UE of group obtains the system message of carrying described measurement configuration information from eNB;
Or the described UE of group obtains the special-purpose beep-page message from the group of carrying described measurement configuration information of eNB;
Or the described UE of group obtains the described measurement configuration information of human configuration.
3. method according to claim 1 and 2 is characterized in that,
The described UE of group carries out before downlink signal quality reports to eNB, also comprise: the described UE of group obtains the system message of carrying Physical Random Access Channel PRACH configuration information from eNB, or, the described UE of group obtains the special-purpose beep-page message from the group of the described PRACH configuration information of carrying of eNB, or the described UE of group obtains the described PRACH configuration information of human configuration; The described UE of group carries out downlink signal quality to eNB and reports and comprise: the described UE of group is according to described PRACH configuration information, sends to described eNB at PRACH and inserts request message at random, and described the access in the request message at random comprises: the sign ID of the described UE of group;
Or, the described UE of group carries out downlink signal quality to eNB and reports and comprise: the described UE of group sends radio resource control RRC connection request message to described eNB, comprises in the described RRC connection request message: be used to indicate the Radio Network Temporary Identifier RNTI that reports group under the former because information of downlink signal quality difference, the described UE of group and the ID of the described UE of group.
4. method according to claim 3 is characterized in that,
Described PRACH configuration information comprises: the ID delivery to the described UE of group, available PRACH is numbered, the described UE of group described delivery as a result the PRACH of the numbering of correspondence send the described request message that inserts at random.
And/or described PRACH configuration information comprises: when the shared same PRACH of two or more described UE of group that belong to the distinct group group, the UE that belongs to different groups adopts the different running time-frequency resources of described PRACH to initiate the described request message that inserts at random;
And/or described PRACH configuration information comprises: length of timer information; The described UE of group at random inserts request message at PRACH to described eNB transmission according to described PRACH configuration information and comprises: the described UE of group is at every turn when the eNB transmission inserts request message at random, open described timer, when the measured value of described downstream signal measurement parameter was lower than described quality threshold and described timer expiry, the described UE of group sent to eNB once more and inserts request message at random.
5. the descending covering self-adapting regulation method of group system is characterized in that, comprising:
The downlink signal quality that base station eNB is obtained from user equipment in group UE reports, described downlink signal quality reports by the UE of group and detects downstream signal according to the measurement configuration information of obtaining, report when the measured value of descending signal measurement parameter is lower than quality threshold, described measurement configuration information comprises: described downstream signal measurement parameter and described quality threshold;
Described eNB adjusts down transmitting power and/or modulation and coding strategy MCS according to the quantity of carrying out the UE of group that downlink signal quality reports that statistics obtains.
6. method according to claim 5 is characterized in that, described eNB obtains before downlink signal quality from the UE of group reports, and also comprises:
Described eNB sends the system message of carrying described measurement configuration information to the described UE of group;
Or described eNB sends the special-purpose beep-page message of the group of carrying described measurement configuration information to the described UE of group.
7. according to claim 5 or 6 described methods, it is characterized in that described eNB obtains downlink signal quality from the UE of group and reports and comprise:
Described eNB receives the request message of access at random that the described UE of group sends at PRACH according to the Physical Random Access Channel PRACH configuration information that obtains, and described the access in the request message at random comprises: the sign ID of the described UE of group;
Or described eNB receives the radio resource control RRC connection request message that the described UE of group sends, and comprises in the described RRC connection request message: be used to indicate report former because information, the RNTI of described group and the ID of the described UE of group of downlink signal quality difference.
8. method according to claim 7 is characterized in that, described eNB obtains before downlink signal quality from the UE of group reports, and also comprises:
Described eNB sends the system message of carrying described PRACH configuration information to the described UE of group;
Or described eNB sends the special-purpose beep-page message of the group of carrying described PRACH configuration information to the described UE of group.
9. a user equipment in group UE is characterized in that, comprising:
Detecting unit is used for detecting downstream signal according to the measurement configuration information of obtaining, and described measurement configuration information comprises: downstream signal measurement parameter and quality threshold;
Report the unit, be used for when the measured value of described downstream signal measurement parameter is lower than described quality threshold, carry out downlink signal quality to base station eNB and report, so that described eNB is according to UE quantity adjustment down transmitting power and/or the modulation and the coding strategy MCS that downlink signal quality reports that carry out of statistics acquisition.
10. the UE of group according to claim 9 is characterized in that,
The described UE of group also comprises: acquiring unit; Described acquiring unit is used to obtain the system message of carrying Physical Random Access Channel PRACH configuration information from eNB, or, be used to obtain special-purpose beep-page message from the group of the described PRACH configuration information of carrying of eNB, or, be used to obtain the described PRACH configuration information of human configuration; The described unit that reports specifically is used for according to described PRACH configuration information, sends to described eNB at PRACH and inserts request message at random, and described the access in the request message at random comprises: the sign ID of the described UE of group;
Or, the described unit that reports specifically is used for sending radio resource control RRC connection request message to described eNB, comprises in the described RRC connection request message: be used to indicate report former because the information of downlink signal quality difference, the RNTI of the affiliated group of the described UE of group and the ID of the described UE of group.
11. a base station eNB is characterized in that, comprising:
Acquiring unit, the downlink signal quality that is used to obtain from user equipment in group UE reports, described downlink signal quality reports by the UE of group and detects downstream signal according to the measurement configuration information of obtaining, report when the measured value of descending signal measurement parameter is lower than quality threshold, described measurement configuration information comprises: described downstream signal measurement parameter and described quality threshold;
Descending control unit is used for UE quantity adjustment down transmitting power and/or modulation and the coding strategy MCS that downlink signal quality reports that carry out according to the statistics acquisition.
12. eNB according to claim 11 is characterized in that,
Described acquiring unit specifically is used to receive the request message of access at random that the described UE of group sends at PRACH according to the PRACH configuration information that obtains, and described the access in the request message at random comprises: the sign ID of the described UE of group;
Or, described acquiring unit specifically is used to receive the radio resource control RRC connection request message that the described UE of group sends, and comprises in the described RRC connection request message: be used to indicate report former because the information of downlink signal quality difference, the RNTI of the affiliated group of the described UE of group and the ID of the described UE of group.
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