CN101547435A - Method and device for reporting cached state - Google Patents
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- CN101547435A CN101547435A CN200810102700A CN200810102700A CN101547435A CN 101547435 A CN101547435 A CN 101547435A CN 200810102700 A CN200810102700 A CN 200810102700A CN 200810102700 A CN200810102700 A CN 200810102700A CN 101547435 A CN101547435 A CN 101547435A
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Abstract
The invention discloses a method for reporting cached state, comprising the steps of determining a logical channel group (LCG) with highest priority and an LCG which is in multiplexing relationship with the LCG with the highest priority through user equipment, and sending predetermined cached state information to a network side, wherein the information at least contains marks of the LCG with the highest priority and the LCG which is in multiplexing relationship with the LCG with the highest priority and information which is used for indicating the size of the cached data of the LCG with the highest priority and the LCG which is in multiplexing relationship with the LCG with the highest priority. The invention also discloses a device for reporting the cached state and the user equipment comprising the device. The new cached state information provided by the embodiment of the invention enables the network side to sufficiently know the current BO status of UE so as to accurately dispatch and improves the efficiency of space resources.
Description
Technical field
The present invention relates to the mobile communication technology field, more particularly, relate to a kind of reporting cached state (Buffer status Reporting, method and apparatus BSR).
Background technology
According to third generation collaborative project (3rd Generation partnership project, 3GPP) the common recognition reached of meeting, uplink scheduling is " Per UE Grant ", promptly for uplink scheduling, Node B (the E-Node B of evolution, eNB) take (BufferOccupy based on the current buffer memory of subscriber equipment (UE), BO) situation and the quality condition of eating dishes without rice or wine are given the UE Resources allocation, (Quality of Service, QoS) attribute carries out the multiplexing of UE inside and UE is based on the quality of service of the resource and the existing business of current distribution.
For supporting uplink scheduling effectively, UE must report eNB with current BO situation, for this reason, 3GPP has defined the BSR control unit (BSR Control Elements) of two kinds of forms to carry current BO information, these two kinds of unit are respectively: short buffer status MAC Control Element (Short Buffer StatusMAC Control element) and long buffer status control unit (Long Buffer Status MACControl element), its loaded information structure respectively as depicted in figs. 1 and 2, wherein, LCG presentation logic channel group (Logical Channel Group), Buffer Size represents cache size.
The original idea of two kinds of BSR Control Elements forms of 3GPP definition is more effectively with the BO information notification eNB of UE, so that carry out uplink scheduling.Under the principle of " Per UE Grant ", in order to improve the efficient of eating dishes without rice or wine the biglyyest, UE can carry out multiplexing to some LCG, but in some cases, because QoS and other characteristics, some LCG can not carry out multiplexing with other LCG, and for example: the LCG2 that LCG1 that priority is higher and priority are lower can carry out multiplexing, but other LCG such as LCG3 but can not carry out multiplexing with LCG1 or LCG2.In this case, above-mentioned two kinds of BSR ControlElement modes can not improve the efficient of eating dishes without rice or wine effectively, this be because:
1, if the priority of LCG3 is the highest in the current UE, then adopt long buffer status MAC Control Element to report BO information can waste interface-free resources, because the BO information of LCG that priority is the highest and LCG that can be multiplexing with it is only considered in the base station, can not influence the decision-making of eNB to scheduling so carry the BO information of other LCG (as LCG1 or LCG2) this moment.
2, if the priority of LCG3 is minimum in the current UE, mean that then the priority of LCG1 is the highest,, then can not allow eNB understand the BO situation of LCG2 if adopt this moment short buffer status MAC Control Element to report BO information; If adopt long buffer status MAC Control Element to report BO information, then for eNB, the BO situation of LCG3 is to the not influence of decision-making of its scheduling, so there is the problem of waste interface-free resources.
Summary of the invention
In view of this, the invention provides a kind of method and apparatus of reporting cached state, to solve the problem that prior art can not improve the efficient of eating dishes without rice or wine effectively.
The present invention is achieved in that
A kind of method of reporting cached state comprises:
Subscriber equipment is determined the logic channel group LCG that priority is the highest, and has the LCG of multiplexing relation with the highest LCG of this priority;
Send default buffer status information to network side, this information comprises the LCG of limit priority at least and has the sign of the LCG of multiplexing relation with it, and is used to indicate the LCG of above-mentioned limit priority to reach the information of the data cached size of the LCG that has multiplexing relation with it.
Preferably, send default buffer status information to network side and send down pre-conditioned, this is pre-conditioned to be: the LCG of above-mentioned limit priority and exist the data cached sum of the LCG of multiplexing relation can the data carried by data payload greater than media access control layer MAC with it.
Preferably, said method also comprises:
Exist the data cached sum of the LCG of multiplexing relation to be less than or equal to first when presetting thresholding as the LCG of limit priority and with it, adopt long buffer status MAC Control Element to report buffer status information;
The described first default thresholding be MAC can the data carried by data payload poor with the data volume of long buffer status MAC Control Element.
Preferably, said method also comprises:
The data cached sum of LCG that has multiplexing relation as the LCG of limit priority and with it is greater than the described first default thresholding, when being less than or equal to the second default thresholding simultaneously, adopts weak point buffer status MAC Control Element to report buffer status information;
The described second default thresholding be MAC can the data carried by data payload poor with the data volume of short buffer status MAC Control Element.
The present invention discloses a kind of device of reporting cached state, comprising:
First processing unit is used for determining the highest logic channel group LCG of priority, and has the LCG of multiplexing relation with the highest LCG of this priority;
Second processing unit, be used to obtain definite result of first processing unit, send default buffer status information to network side, this information comprises the LCG of limit priority at least and has the sign of the LCG of multiplexing relation with it, and is used to indicate the LCG of above-mentioned limit priority to reach the information of the data cached size of the LCG that has multiplexing relation with it.
Preferably, described second processing unit sends default buffer status information to network side to carry out pre-conditioned under, and this is pre-conditioned to be: the LCG of above-mentioned limit priority reaches and exists the data cached sum of the LCG of multiplexing relation can the data carried by data payload greater than MAC with it.
Preferably, said apparatus also comprises:
The 3rd processing unit, when being used for existing as the LCG of limit priority and with it the data cached sum of LCG of multiplexing relation to be less than or equal to the first default thresholding, employing buffer status MAC Control Element reports buffer status information;
The described first default thresholding be MAC can the data carried by data payload poor with the data volume of long buffer status MAC Control Element.
Preferably, said apparatus also comprises:
Manages the unit everywhere, be used for reaching the data cached sum of the LCG that has multiplexing relation with it greater than the described first default thresholding as the LCG of limit priority, when being less than or equal to the second default thresholding simultaneously, adopt short buffer status MAC Control Element to report buffer status information;
The described second default thresholding be MAC can the data carried by data payload poor with the data volume of short buffer status MAC Control Element.
The present invention also discloses a kind of subscriber equipment, comprise the device of reporting cached state, the device of this reporting cached state comprises:
First processing unit is used for determining the highest logic channel group LCG of priority, and has the LCG of multiplexing relation with the highest LCG of this priority;
Second processing unit, be used to obtain definite result of first processing unit, send default buffer status information to network side, this information comprises the LCG of limit priority at least and has the sign of the LCG of multiplexing relation with it, and is used to indicate the LCG of above-mentioned limit priority to reach the information of the data cached size of the LCG that has multiplexing relation with it.
Preferably, described second processing unit sends default buffer status information to network side to carry out pre-conditioned under, and this is pre-conditioned to be: the LCG of above-mentioned limit priority reaches and exists the data cached sum of the LCG of multiplexing relation can the data carried by data payload greater than MAC with it.
From above-mentioned technical scheme as can be seen, unlike the prior art, the invention provides a kind of new buffer status information, its information that comprises can allow network side fully understand the current BO situation of UE, thereby can dispatch exactly, improve the efficient of interface-free resources.
Description of drawings
Fig. 1 is the structural representation of existing short buffer status MAC Control Element loaded information;
Fig. 2 is the structural representation of existing long buffer status MAC Control Element loaded information;
Fig. 3 is the flow chart of the embodiment of a kind of reporting cached state of the present invention;
Fig. 4 is the structural representation of the buffer status information of the foregoing description;
Fig. 5 is the structural representation that can be used for realizing the device of above-mentioned certain methods embodiment;
Fig. 6 is the structural representation of another one embodiment of the present invention;
Fig. 7 is the structural representation of another one embodiment of the present invention.
Embodiment
Embodiment disclosed herein relates in radio communication, and subscriber equipment (UE) reports the method for BSR and realizes the device of this method.
For quote and know for the purpose of, this various writes a Chinese character in simplified form and simplicity of explanation and explanation are carried out in abbreviation of using in to literary composition:
BSR (Buffer Status Reporting) reporting cached state
BO (Buffer Occupy) buffer memory takies
LCG (Logical Channel Group) logic channel group
PayloadSize:MAC can the data carried by data payload.
The BO Size of data to be sent be meant all can with total size of the multiplexing data of the RB (Radio Bearer, radio bearer) of limit priority.
UE comes definite which kind of BSR Control Element of employing according to the comparative result to the size of data (long BSR Size) of the size of data (shortBSR Size) of PayloadSize, short buffer status MAC Control Element and long buffer status MAC Control Element.
Concrete condition is as follows:
The BO Size of situation 1, (PayloadSize-long BSR Size)＜all outgoing data＜=(PayloadSize-short BSR Size).
At this moment, adopt short buffer status MAC Control Element.
The BO Size of situation 2, all outgoing data＜=(PayloadSize-long BSR Size)
At this moment, use long buffer status MAC Control Element.
The BO Size of situation 3, all outgoing data〉PayloadSize.
At this moment, use short buffer status MAC Control Element.
Under certain conditions, the BO Size of all outgoing data〉during PayloadSize, if adopt short buffer status MAC Control Element to report BO information, then can't allow eNB fully understand the current BO information of UE, if and the long buffer status MAC Control Element of employing reports BO information, then can too much waste interface-free resources.If can under the prerequisite of the BO situation that guarantees to allow the base station fully understand UE, reduce the data volume size of information, improve interface-free resources efficient, this will be desired.
The present invention is based on this, proposed a solution, better understand this scheme, be described in detail below in conjunction with drawings and Examples in order to make those skilled in the art.
Fig. 3 shows the flow chart of the embodiment of a kind of reporting cached state of the present invention.
Specifically may further comprise the steps:
Step S101, determine the LCG that priority is the highest.
There are the LCG of multiplexing relation in step S102, LCG definite and that this priority is the highest.
Step S103, send a buffer status information to network side, this information comprises the LCG of limit priority at least and has the sign of the LCG of multiplexing relation with it, and is used to indicate the information of data cached size.
The concrete form of described buffer status information can be as shown in Figure 4.
Wherein, multiplexing ID (Multi ID) refers to professional multiplexing relation, and for example under certain scheduling strategy, LCG1 can carry out multiplexingly with LCG2, and then this multiplexing relation can be indicated by multiplexing ID.Data cached size refers to the total data cached size that can carry out multiplexing service, and its size that can indicate is identical with the related definition of 3GPP36321.200 agreement.
So eNB therefrom can be known following information at least after receiving described buffer status information:
1, the LCG of the inner limit priority of UE;
2, multiplexing LCG can be carried out with the LCG of above-mentioned limit priority in UE inside, and total BO.
Therefore, eNB can fully understand the buffer status of UE by above-mentioned information, and then can carry out uplink scheduling exactly, improves the efficient of eating dishes without rice or wine.
Suppose that there are 3 LCG in UE, is respectively LCG1, LCG2 and LCG3, wherein, the LCG2 that LCG1 that priority is higher and priority are lower can carry out multiplexing, if priority ordering from high to low is: LCG1〉LCG2〉LCG3.
At this moment, if adopt the short buffer status MAC Control Element of prior art to report BO information, then only can be with LCG3 sign and corresponding BO information notification eNB, eNB can't therefrom recognize: multiplexing this situation of LCG2 and LCG1, and total BO information of LCG2 and LCG1, thereby cause and accurately to dispatch.And if the long buffer status MAC Control Element of employing prior art reports BO information, then the information (comprising LCG3 sign and corresponding BO situation) of LCG3 also can be sent together, cause the waste of interface-free resources.
And the foregoing description disclosed by the invention, the buffer status information that UE sends comprises the LCG of limit priority and has the sign of the LCG of multiplexing relation with it, and is used to indicate the information of data cached size.That is to say that in its this buffer status information, it does not comprise the BO information of the LCG that has nothing to do with the eNB scheduling.ENB can fully understand the current BO situation of UE, thereby can dispatch exactly based on this information, improves the efficient of interface-free resources.
Need to prove, can improve, wherein data format modification is become form shown in Figure 4 the short-and-medium buffer status MAC Control Element of existing protocol.Also can add a kind of new MAC subheader (MAC subhead) and identify the buffer status information that this has form shown in Figure 4, thereby make this form be able to and existing dual mode coexistence based on the 3GPP36321.800 agreement.In this case, which kind of form UE can determine to adopt carry out BSR according to network condition (comparative result of PayloadSize, short BSR Size, long BSR Size and the data BO Size that sends out of remaining) to report.
A kind of feasible scheme is:
If the BO Size of (PayloadSize-long BSR Size)＜all outgoing data＜=(PayloadSize-short BSR Size) then adopts short buffer status MAC Control Element to report BO information.
If the BO Size of all outgoing data＜=(PayloadSize-long BSR Size) then uses long buffer status MAC Control Element to report BO information.
If the BO Size of all outgoing data〉PayloadSize, at this moment, use above-mentioned buffer status information shown in Figure 4 to report.
Fig. 5 shows the structural representation of the device that can be used for realizing above-mentioned certain methods embodiment.
This embodiment comprises first processing unit 101, second processing unit 102.
Described first processing unit 101 is determined the highest logic channel group LCG of priority, and has the LCG of multiplexing relation with the highest LCG of this priority, and will determine that the result offers second processing unit 102.
Described second processing unit 102 is according to described definite result, sends default buffer status information to network side, and this information comprises the LCG of limit priority at least and has the sign of the LCG of multiplexing relation with it, and is used to indicate the information of data cached size.
The form of this buffer status information as shown in Figure 4, particular content can be with reference to the previous methods partial content.Do not repeat them here.
Need to prove that above-mentioned second processing unit 102 sends default buffer status information can carry out under pre-conditioned, describedly pre-conditionedly be:
The LCG of described limit priority and exist the data cached sum of the LCG of multiplexing relation can data carried by data payload (PayloadSize) with it greater than MAC, promptly previously described situation 1.
Need to prove, can improve, wherein data format modification is become form shown in Figure 4 the short-and-medium buffer status MAC Control Element of existing protocol.Also can add a kind of new MAC subheader (MAC subhead) and identify the buffer status information that this has form shown in Figure 4, thereby make this form be able to and existing dual mode coexistence based on 3GPP 36321.800 agreements.
Fig. 6 is the structural representation of another one embodiment of the present invention.
On the basis of structure shown in Figure 5, can further include:
The 3rd processing unit 103 is used for existing as the LCG of limit priority and with it the data cached sum of LCG of multiplexing relation to be less than or equal to first when presetting thresholding (also previously described situation 2), adopts long buffer status MAC Control Element to report BO information.
The described first default thresholding be MAC can the data carried by data payload poor with the data volume of long buffer status MAC Control Element.
Fig. 7 is the structural representation of another one embodiment of the present invention.
On the basis of the foregoing description, can further include:
Manages unit 104 everywhere, be used for reaching the data cached sum of the LCG that has multiplexing relation with it greater than the described first default thresholding as the LCG of limit priority, when being less than or equal to the second default thresholding simultaneously (also previously described situation 1), adopt short buffer status MAC Control Element to report BO information.
The described second default thresholding be MAC can the data carried by data payload poor with the data volume of short buffer status MAC Control Element.
The present invention also provides a kind of subscriber equipment with above-mentioned Fig. 5, Fig. 6 or device shown in Figure 7 simultaneously.
It will be understood by those skilled in the art that and to use many different technologies and in the technology any one to come expression information, message and signal.For example, the message of mentioning in the above-mentioned explanation, information can be expressed as voltage, electric current, electromagnetic wave, magnetic field or magnetic particle, light field or above combination in any.
The professional can also further should be able to recognize, the unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software clearly is described, the composition and the step of each example described prevailingly according to function in the above description.These functions still are that software mode is carried out with hardware actually, depend on the application-specific and the design constraint of technical scheme.The professional and technical personnel can use distinct methods to realize described function to each specific should being used for, but this realization should not thought and exceeds scope of the present invention.
The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can directly use the software module of hardware, processor execution, and perhaps the combination of the two is implemented.Software module can place the storage medium of any other form known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or the technical field.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1, a kind of method of reporting cached state is characterized in that, comprising:
Subscriber equipment is determined the logic channel group LCG that priority is the highest, and has the LCG of multiplexing relation with the highest LCG of this priority;
Send default buffer status information to network side, this information comprises the LCG of limit priority at least and has the sign of the LCG of multiplexing relation with it, and is used to indicate the LCG of above-mentioned limit priority to reach the information of the data cached size of the LCG that has multiplexing relation with it.
2, the method for claim 1, it is characterized in that, send default buffer status information to network side and send down pre-conditioned, this is pre-conditioned to be: the LCG of above-mentioned limit priority and exist the data cached sum of the LCG of multiplexing relation can the data carried by data payload greater than media access control layer MAC with it.
3, method as claimed in claim 1 or 2 is characterized in that, also comprises:
Exist the data cached sum of the LCG of multiplexing relation to be less than or equal to first when presetting thresholding as the LCG of limit priority and with it, adopt long buffer status MAC Control Element to report buffer status information;
The described first default thresholding be MAC can the data carried by data payload poor with the data volume of long buffer status MAC Control Element.
4, method as claimed in claim 3 is characterized in that, also comprises:
The data cached sum of LCG that has multiplexing relation as the LCG of limit priority and with it is greater than the described first default thresholding, when being less than or equal to the second default thresholding simultaneously, adopts weak point buffer status MAC Control Element to report buffer status information;
The described second default thresholding be MAC can the data carried by data payload poor with the data volume of short buffer status MAC Control Element.
5, a kind of device of reporting cached state is characterized in that, comprising:
First processing unit is used for determining the highest logic channel group LCG of priority, and has the LCG of multiplexing relation with the highest LCG of this priority;
Second processing unit, be used to obtain definite result of first processing unit, send default buffer status information to network side, this information comprises the LCG of limit priority at least and has the sign of the LCG of multiplexing relation with it, and is used to indicate the LCG of above-mentioned limit priority to reach the information of the data cached size of the LCG that has multiplexing relation with it.
6, device as claimed in claim 5, it is characterized in that, described second processing unit sends default buffer status information to network side to carry out pre-conditioned under, and this is pre-conditioned to be: the LCG of above-mentioned limit priority reaches and exists the data cached sum of the LCG of multiplexing relation can the data carried by data payload greater than MAC with it.
7, as claim 5 or 6 described devices, it is characterized in that, also comprise:
The 3rd processing unit, when being used for existing as the LCG of limit priority and with it the data cached sum of LCG of multiplexing relation to be less than or equal to the first default thresholding, employing buffer status MAC Control Element reports buffer status information;
The described first default thresholding be MAC can the data carried by data payload poor with the data volume of long buffer status MAC Control Element.
8, device as claimed in claim 7 is characterized in that, also comprises:
Manages the unit everywhere, be used for reaching the data cached sum of the LCG that has multiplexing relation with it greater than the described first default thresholding as the LCG of limit priority, when being less than or equal to the second default thresholding simultaneously, adopt short buffer status MAC Control Element to report buffer status information;
The described second default thresholding be MAC can the data carried by data payload poor with the data volume of short buffer status MAC Control Element.
9, a kind of subscriber equipment comprises the device of reporting cached state it is characterized in that the device of this reporting cached state comprises:
First processing unit is used for determining the highest logic channel group LCG of priority, and has the LCG of multiplexing relation with the highest LCG of this priority;
Second processing unit, be used to obtain definite result of first processing unit, send default buffer status information to network side, this information comprises the LCG of limit priority at least and has the sign of the LCG of multiplexing relation with it, and is used to indicate the LCG of above-mentioned limit priority to reach the information of the data cached size of the LCG that has multiplexing relation with it.
10, subscriber equipment as claimed in claim 9, it is characterized in that, described second processing unit sends default buffer status information to network side to carry out pre-conditioned under, and this is pre-conditioned to be: the LCG of above-mentioned limit priority reaches and exists the data cached sum of the LCG of multiplexing relation can the data carried by data payload greater than MAC with it.
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| GB0306973D0 (en) * | 2003-03-26 | 2003-04-30 | British Telecomm | Transmitting video |
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