CN102577558B - A kind of report method of Buffer Status Report and subscriber equipment - Google Patents

A kind of report method of Buffer Status Report and subscriber equipment Download PDF

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CN102577558B
CN102577558B CN201080039140.XA CN201080039140A CN102577558B CN 102577558 B CN102577558 B CN 102577558B CN 201080039140 A CN201080039140 A CN 201080039140A CN 102577558 B CN102577558 B CN 102577558B
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ulcc
measurement result
phr
path loss
bsr
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CN102577558A (en
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张健
黄亚达
施小娟
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Haining hi tech Zone Science and Innovation Center Co., Ltd
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

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Abstract

The invention discloses a kind of report method and subscriber equipment of Buffer Status Report, wherein, described method comprises: subscriber equipment (UE) selects buffer data quantity grade table according to the configuring condition of up (UL) component carrier (CC) and/or radio condition; Described UE reports BSR according to selected buffer data quantity grade table to evolved base station (eNB).The present invention can make eNB and UE unambiguously identify the kind of the BSR form that current transmission time interval (TTI) uses, UE can be made under LTE data rate and LTE-A high data rate situation all can to obtain fine-grained accurate scheduling, save Radio Resource, improve wireless resource utility efficiency.

Description

A kind of report method of Buffer Status Report and subscriber equipment
Technical field
The present invention relates to wireless communication technology field, particularly the report method of Buffer Status Report and subscriber equipment (UserEquipment is called for short UE) in a kind of wireless network.
Background technology
3G (Third Generation) Moblie Long Term Evolution (LongTermEvolution, be called for short LTE) Evolved UTRAN (EvolvedUniversalTerrestrialRadioAccessNetwork of system, be called for short E-UTRAN) in, the data of up link are by physical uplink link shared channels (PhysicalUplinkSharedChannel is called for short PUSCH) transmission.Uplink radio resources is distributed to each subscriber equipment (UserEquipment is called for short UE) by evolved base station (EvolvedNodeB is called for short eNB).The multiple access technique that E-UTRAN adopts is OFDM access (OrthogonalFrequencyDivisionMultiplexingAccess is called for short OFDMA) technology.Wireless heterogeneous networks (RadioResourceControl the is called for short RRC) layer of LTE system can send RRC information to realize setting up rrc layer link, configuration-system parameter between UE and eNB and transmitting many processes such as UE ability parameter.Wherein, the RRC information of down link is in physical down link sharing channel (PhysicalDownlinksharedChannel is called for short PDSCH) upper transmission.Some common parameters relevant with system, the such as information such as subdistrict frequency point and cell system bandwidth is then sent to UE in all communities in broadcast by eNB, broadcast above sends at Physical Broadcast Channel (PhysicalBroadcastChannel is called for short PBCH).
In order to each UE being given according to the demand assignment resource of oneself and providing service, to realize good multiplexing performance in uplink, simultaneously also in order to fully flexible and efficient utilizes system bandwidth, LTE system is that special control message has been formulated in the uplink transmission resource distribution of user.Wherein, the control message be exclusively used in PUSCH carries out Resourse Distribute sends to UE by eNB, this Resourse Distribute control message is also called uplink grant (UpLinkGrant, be called for short ULGrant), ULGrant is in physical downlink control channel (PhysicalDownlinkControlChannel is called for short PDCCH) upper transmission.
In order to ensure to the rational distributing radio resource of each UE, LTE system requires that UE reports the data volume state stored in oneself buffering area, and this report offers eNB with Buffer Status Report (BufferStatusReport is called for short BSR) in form.In LTE system, wave point logic channel (LogicalCHannel, be called for short LCH) be provided with different priority, these LCH are divided into 4 logic channel group (LogicalChannelGroup, be called for short LCG), what BSR reported is exactly the group sequence number of each LCG of UE and the information of the data to be transmitted amount of all LCH in group.
Because BSR is that eNB carries out the important reference information of rational wireless resource scheduling to UE, therefore LTE system defines the type of multiple BSR and sends rule.According to the difference of the event of triggering BSR, BSR is divided into conventional Buffer Status Report (RegularBSR), cycle Buffer Status Report (PeriodicBSR) and fills Buffer Status Report (PaddingBSR).
Wherein, the trigger condition of RegularBSR comprises:
have the upper strata of high priority logic channel to transmit data to reach, the priority of the existing LCH data in its priority ratio UE buffering area is high;
serving cell changes;
bSR retransmission timer (RETX_BSR_TIMER) time-out, and in UE buffering area, have the data that can transmit.
The trigger condition of PeriodicBSR is: if BSR cycle timer (PERIODICBSRTIMER) is overtime, then trigger PeriodicBSR.
The trigger condition of PaddingBSR is: if both to be sent without RegularBSR, also to be sent without PeriodicBSR, and be more than or equal to BSRMAC balancing boom (ControlElement for the amount of bits of filling in the up link PUSCH resource of having distributed, be called for short CE) and the size sum of its MAC heading (subheader), then trigger PaddingBSR.
PaddingBSR is the BSR of filled-type, and be supplementing of RegularBSR and PeriodicBSR, relative, RegularBSR and PeriodicBSR can be included into the BSR of non-filling type.When up link does not send RegularBSR and PeriodicBSR, PaddingBSR can allow eNB obtain the situation of UE buffering area LCG data variation more in time.
RegularBSR and PeriodicBSR is all encapsulated as a MACCE in medium access control layer protocol data cell (MediaAccessControlProtocolDataUnit is called for short MACPDU).PaddingBSR is filled in the filling bit (Padding) of MACPDU.MACPDU sends on PUSCH.
According to the definition of the consensus standard (3GPPTS36.321) of current LTEMAC layer, aforesaid MACPDU as shown in Figure 1, a MACPDU is by a MAC header (header), 0 or multiple MACCE, 0 or multiple MAC service data unit (ServiceDataUnit is called for short SDU) and optional filling bit (Padding) composition.MAC header is made up of multiple MAC sub-header, each MAC sub-header according to arrangement sequencing, MACCE, MACSDU or Padding of arranging after being corresponding in turn to MAC header, as shown in Figures 2 and 3.The MAC sub-header of BSRMACCE corresponds to Fig. 3, is R/R/E/LCID form, and wherein R is for retaining position, and E is extension bits, has other sub-heading after representing this sub-heading.The LCID comprised in MAC sub-header is corresponding MACCE or MACSDU or the type of Padding, as being explained as follows of up LCID.
According to the definition of the consensus standard (3GppTS36.321) of current LTEMAC layer, PaddingBSR can only use the Padding bit of MACPDU to send.
The form of the BSR of LTE system definition has two kinds, and as shown in Figure 4 and Figure 5, the BSR form shown in Fig. 4 is called short BSR form or brachymemma (Truncated) BSR form, and the BSR form shown in Fig. 5 is called long BSR form.BSR is carried by PUSCH.When UE triggers BSR, and when only having a LCG to have data to be transmitted, UE adopts short BSR form to report BSR; The BSR triggered as UE is RegularBSR or PeriodicBSR, and has multiple LCG to have data to be transmitted, and UE adopts long BSR form to report BSR; The BSR triggered as UE is PaddingBSR, and has multiple LCG to have data to be transmitted, and when the Padding bit length of MACPDU is not enough to for sending long BSR form, UE adopts brachymemma BSR form to report PaddingBSR.
In above-mentioned two kinds of BSR forms, the BSR of single LCG is represented by 6bit, the value of this 6bit uses as sequence number (index) inquiry in buffer data quantity grade (Buffersizelevels) table of BSR, and this table particular content is as follows:
The form of above-mentioned BSR and the definition of transmission rule are all defined in current LTErelease8 standard, in order to adapt to the demand of the current and following various wireless traffics rapidly increased, the next evolution standard of LTErelease8 has also started to enter formulation process, namely senior LTE (LTE-Advanced is called for short LTE-A) standard.
LTE-A is third generation partner program (the3rdGenerationPartnerProject, being called for short 3GPP) tissue is to meet International Telecommunication Union (InternationalTelecommunicationUnion, be called for short ITU) requirement of advanced international mobile communication (InternationalMobileTelecommunication-Advanced is called for short IMT-Advanced) and the standard released.Lte-a system is an evolution version in LTErelease8 system-based, which introduce a lot of new technology to meet the primary demand of IMT-Advanced, wherein an important technology is exactly carrier aggregation (CarrierAggregation is called for short CA).Due to the property in short supply of current radio spectrum resources, the frequency spectrum resource that each mobile operator in the world has is often more scattered, and IMT-Advanced requires that the index of peak rate is higher and (supports 100Mbps under high mobility, 1Gbps is supported) under Hypomobility, IMT-Advanced cannot be met with the bandwidth of the maximum 20MHz of current LTE standard to require, so need to extend to more high bandwidth, such as Frequency Division Duplexing (FDD) (FrequencyDivisionDuplex, be called for short FDD) maximum support 80MHz, time division duplex (TimeDivisionDuplex, be called for short TDD) maximum support 100MHz, so the relative LTE of data volume that UE can transmit too increases several times.Except bandwidth increases, in order to reach higher speed, Multiinputoutput (MultiInputMultiOutput is called for short MIMO) is also the core technology promoting lte-a system throughput.Consider upstream bandwidth and increase (5 times of relative LTE bandwidth) and up double-current MIMO (2 times of relative LTE single current), in lte-a system, the most senior general of the upstream rate of UE rises to 10 times of LTE.
LTE-A version 10 (Rel-10) system CA descending and/or up respectively by maximum 5 component carrier (ComponentCarrier, be called for short CC) be aggregating to support maximum 100MHz transmission bandwidth respectively, up (UpLink, being called for short UL) the sum configuration of CC is less than or equal to the sum configuration of descending (DownLink, be called for short DL) CC.Each CC corresponds to a mixed automatic retransfer (HybridAutomaticRepeatRequest is called for short HARQ) entity and transmission channel.Each DLCC has respectively one independently PDCCH indicate the Resourse Distribute on this CC or the Resourse Distribute on other CC, be divided into downlink resource to distribute the situation of (DLassignment) or uplink authorization (ULgrant).When being configured with CC index (CIF), PDCCH there is the CIF of 3bit indicate component carrier identification information.UE configures 1 downlink main carrier to carry (DLPCC respectively, DownlinkPrimaryCC) and 1 up main carrier (ULPCC, UplinkPrimaryCC), 0 ~ 4 descending auxiliary carrier wave (DLSCC can be configured, and/or 0 ~ 4 upstream auxiliary carriers (ULSCC, UplinkSecondaryCC) DownlinkSecondaryCC).DLPCC and ULPCC forms the main Serving cell (PCell) of UE, PCell provides the function such as safety and Non-Access Stratum mobility information (securityandNASmobilityInfo), synchronous, access, system information, paging, and UE Stochastic accessing can only be undertaken by PCell.ULPCC is configured with and sends HARQACK/NACK (confirm/not confirming), dispatch request (SchedulingRequest, be called for short SR), the PUCCH resource of the signaling such as channel quality instruction (ChannelQualityIndicator, be called for short CQI).The ULSCC composition time Serving cell (SCell) that DLSCC associates with it, SCell provides higher bandwidth sum data throughout as increased Radio Resource, and SCell also may not comprise ULSCC configuration.ULPCC and DLPCC is by the information association indicated by system information block 2 (SIB2); ULSCC and DLSCC is by SIB2 or the information association of dedicated signaling indicated by RRC signaling; ULSCC also can be associated according to the reference DLCC of the reference DLCC or measurement timing advance that measure descending path loss with DLSCC or DLPCC.Whenever, the UE of RRC connection (RRC_CONNECTED) state must keep the configuration of a DLPCC and ULPCC.From the angle of UE power saving and CC management, eNB can not be able to be activated/deexcitation by MACCE activation/deactivation DLSCC, DLPCC.UE do not monitor PDCCH on the DLSCC of deactivation status, do not receive PDSCH, do not carry out measurement, non-receiving system information that CQI is correlated with, support the relevant measurement of mobility, close base band and/or radio frequency part module and carry out corresponding RF frequency to regulate.For ULSCC the need of supporting whether the UE behavior of activation/deactivation function and correspondence such as stops the reference signal (SoundingReferencesignal sent on corresponding ULSCC, be called for short SRS) or PUSCH data etc., current 3GPP is just under discussion.
Summary of the invention
The buffer data quantity grade table of LTE standard (being called for short BSR form herein) only fine granularity can represent the data of maximum 150K, the business of all the other all 150K of being greater than all belongs to same BSR rank, if namely still use the BSR form of LTE, the LTE-A business of so large throughput will make network cannot distinguish UE at 150K to 1500K buffer state, thus cause resource cannot effective reasonable distribution.Therefore 3GPP by adding the BSR form of at least one Zhang Xin again on the BSR form basis of LTE, to be reflected in the requirement of the buffer state of 150K to 1500K in the large business throughput situation meeting LTE-A accurately.But after UE supports multiple BSR form, how to use these forms also not determine.
Technical problem to be solved by this invention is to provide a kind of report method and subscriber equipment of Buffer Status Report, to realize reporting BSR when multiple BSR form.
In order to solve the problems of the technologies described above, the invention provides the report method of a kind of Buffer Status Report (BSR), comprising:
Subscriber equipment (UE) selects buffer data quantity grade table according to the configuring condition of up (UL) component carrier (CC) and/or radio condition; And
Described UE reports BSR according to selected buffer data quantity grade table to evolved base station (eNB).
Preferably, select in the step of buffer data quantity grade table according to the configuring condition of ULCC and/or radio condition at UE, the buffer data quantity grade table selected by described UE is the first data volume table of grading or the second data volume table of grading;
Wherein, described first data volume table of grading is the buffer data quantity grade table that Long Term Evolution (LTE) system uses, and described second data volume table of grading is the buffer data quantity grade table of the support high data rate that senior Long Term Evolution (LTE-A) system uses.
Preferably, described UE selects the step of buffer data quantity grade table to comprise according to the configuring condition of ULCC:
When described UE is configured with 1 ULCC, select the first data volume table of grading;
When described UE is configured with the ULCC of more than 1, select the second data volume table of grading.
Preferably, described radio condition is descending path loss measurement result; UE selects the step of buffer data quantity grade table to comprise according to radio condition: when walking along the street loss measurement result is higher than the descending path loss measurement result thresholding preset instantly, UE selects the first data volume table of grading; Instantly, when walking along the street loss measurement result is lower than the descending path loss measurement result thresholding preset, UE selects the second data volume table of grading; Or,
Described radio condition is channel quality instruction (CQI) measurement result; UE selects the step of buffer data quantity grade table to comprise according to radio condition: when CQI measurement is lower than the CQI measurement thresholding preset, UE selects the first data volume table of grading; When CQI measurement is higher than the CQI measurement thresholding preset, UE selects the second data volume table of grading; Or,
Described radio condition is power headroom reporting (PHR) (PHR) value; UE selects the step of buffer data quantity grade table to comprise according to radio condition: when PHR value is lower than the PHR thresholding preset, UE selects the first data volume table of grading; When PHR value is higher than the PHR thresholding preset, UE selects the second data volume table of grading.
Preferably, described descending path loss measurement result is the one in following: the descending path loss measurement result of the minimum value of descending path loss measurement result or maximum or mean value in the DLCC associated by all ULCC that the descending path loss measurement result of descending (DL) main carrier (PCC), UE configure, the descending path loss measurement result of the DLCC associated by any ULCC that UE configures, the DLCC associated by specific ULCC;
Described CQI measurement is the one in following: the CQI measurement of the minimum value of CQI measurement or maximum or mean value in the DLCC associated by all ULCC that the CQI measurement of DLPCC, UE configure, the CQI measurement of the DLCC associated by any ULCC that UE configures, the DLCC associated by specific ULCC;
Described PHR value is the one in following: the PHR value of any ULCC that the minimum value of PHR or maximum or mean value, UE configure, specific the PHR value of ULCC, the PHR value of UE in all ULCC that the PHR value of ULPCC, UE configure.
Preferably, described method also comprises:
The DLCC associated by ULCC is determined according to the instruction in system information block 2 (SIB2) or wireless heterogeneous networks (RRC) instruction or descending path loss witness mark or timing advance witness mark.
Preferably, when described radio condition is descending path loss measurement result, described method also comprises: when described UE reports BSR, also report described descending path loss measurement result to described eNB;
When described radio condition is CQI measurement, described method also comprises: when described UE reports BSR, also report described CQI measurement to described eNB;
When described radio condition is PHR value, described method also comprises: when described UE reports BSR, also report described PHR value to described eNB.
Preferably, described UE reports the step of BSR to comprise according to selected buffer data quantity grade table to eNB:
When triggering reports BSR, and when at least one ULCC has ascending resource, described UE calculates buffer data quantity grade according to selected buffer data quantity grade table, generating BSR media access control layer balancing boom (MACCE), reporting described BSR there being the ULCC of ascending resource.
In order to solve the problems of the technologies described above, the invention provides a kind of subscriber equipment (UE), comprise and selecting module and reporting module, wherein:
Described selection module installation becomes: according to configuring condition and/or the radio condition selection buffer data quantity grade table of up (UL) component carrier (CC);
Described reporting module is arranged to: the buffer data quantity grade table according to described selection model choice reports BSR to evolved base station (eNB).
Preferably, described selection module is arranged to: select the first data volume table of grading or the second data volume table of grading according to the configuring condition of ULCC and/or radio condition;
Wherein, described first data volume table of grading is the buffer data quantity grade table that Long Term Evolution (LTE) system uses, and described second data volume table of grading is the buffer data quantity grade table of the support high data rate that senior Long Term Evolution (LTE-A) system uses.
Preferably, described selection module is arranged to: when described UE is configured with 1 ULCC, selects the first data volume table of grading; When described UE is configured with the ULCC of more than 1, select the second data volume table of grading.
Preferably, described selection module is arranged to: when described radio condition is descending path loss measurement result, instantly when walking along the street loss measurement result is higher than the descending path loss measurement result thresholding preset, select the first data volume table of grading, instantly, when walking along the street loss measurement result is lower than the descending path loss measurement result thresholding preset, the second data volume table of grading is selected; Or, when described radio condition is channel quality instruction (CQI) measurement result, when CQI measurement is lower than the CQI measurement thresholding preset, select the first data volume table of grading, when CQI measurement is higher than the CQI measurement thresholding preset, select the second data volume table of grading; Or, when described radio condition is power headroom reporting (PHR) (PHR) value, when PHR value is lower than the PHR thresholding preset, select the first data volume table of grading, when PHR value is higher than the PHR thresholding preset, select the second data volume table of grading.
Preferably, described descending path loss measurement result is the one in following: the descending path loss measurement result of the minimum value of descending path loss measurement result or maximum or mean value in the DLCC associated by all ULCC that the descending path loss measurement result of descending (DL) main carrier (PCC), UE configure, the descending path loss measurement result of the DLCC associated by any ULCC that UE configures, the DLCC associated by specific ULCC;
Described CQI measurement is the one in following: the CQI measurement of the minimum value of CQI measurement or maximum or mean value in the DLCC associated by all ULCC that the CQI measurement of DLPCC, UE configure, the CQI measurement of the DLCC associated by any ULCC that UE configures, the DLCC associated by specific ULCC;
Described PHR value is the one in following: the PHR value of any ULCC that the minimum value of PHR or maximum or mean value, UE configure, specific the PHR value of ULCC, the PHR value of UE in all ULCC that the PHR value of ULPCC, UE configure.
Preferably, described reporting module is also arranged to: when described radio condition is descending path loss measurement result, reports described descending path loss measurement result to described eNB; When described radio condition is CQI measurement, report described CQI measurement to described eNB; When described radio condition is PHR value, report described PHR value to described eNB.
Preferably, described reporting module is arranged to: when triggering reports BSR, and when at least one ULCC has ascending resource, buffer data quantity grade is calculated according to selected buffer data quantity grade table, generating BSR media access control layer balancing boom (MACCE), reporting described BSR there being the ULCC of ascending resource.
The present invention is convenient to be implemented, and enables BSR form that UE requires dynamic conditioning to use according to its radio condition and/or traffic carrying capacity so that eNB carries out high efficiency scheduling.The present invention can make eNB and UE unambiguously identify the kind of the BSR form that current transmission time interval (TTI) uses, UE can be made under LTE data rate and LTE-A high data rate situation all can to obtain fine-grained accurate scheduling, save Radio Resource, improve wireless resource utility efficiency.
Summary of drawings
Fig. 1 is the MACPDU schematic diagram of LTE standard definition;
Fig. 2 is the MAC head schematic diagram of LTE standard definition;
Fig. 3 is the MAC head schematic diagram of LTE standard definition;
Fig. 4 is the short BSR of LTE standard definition and the schematic diagram of brachymemma BSR;
Fig. 5 is the schematic diagram of the long BSR of LTE standard definition;
Fig. 6 is embodiment 1 schematic diagram that LTE-ACABSR reports;
Fig. 7 is embodiment 2 schematic diagram that LTE-ACABSR reports;
Fig. 8 is embodiment 3 schematic diagram that LTE-ACABSR reports;
Fig. 9 is that the UE of the embodiment of the present invention forms schematic diagram.
Better embodiment of the present invention
Basic conception of the present invention is: LTE-ACA supports at least two kinds of buffer data quantity grade tables (i.e. BSR form), BSR form (the first data volume table of grading that LTE system uses, represent with BT0) and the BSR form (the second data volume table of grading, represents with BT1) of support high data rate that uses for lte-a system.UE selects BSR form according to CC configuring condition and/or radio condition, reports its BSR according to selected BSR form.
UE by explicit identification in BSRMACCE or can unambiguously can identify corresponding BSR form after making eNB receive BSR by preset rules.
Scheme one: UE selects BSR form according to ULCC configuring condition.
Particularly, Ke Yishi: when UE is configured with 1 ULCC, selects BT0; When UE is configured with the ULCC of more than 1, select BT1.
The program based on thought be: when UE is only configured with a ULCC, upstream data rate higher under being greater than LTERel-8 single carrier case can not be reached and obtain larger uplink authorization, therefore can still use BT0 to calculate BSR.The situation of MIMO also can use BT0.When being configured with multiple ULCC, being generally the traffic needs of UE or eNB dispatching requirement and needing high data rate support, larger uplink authorization may be obtained, therefore use BT1 to be dispatched more accurately.
Scheme two: UE selects BSR form according to radio condition.
Radio condition can refer to descending path loss (DLpathloss) measurement result, or channel quality instruction (CQI) measurement result, or power headroom reporting (PHR) (PHR) value.
(1) when radio condition is descending path loss measurement result: when walking along the street loss measurement result is higher than the descending path loss measurement result thresholding preset instantly, UE selects BT0; Instantly, when walking along the street loss measurement result is lower than the descending path loss measurement result thresholding preset, UE selects BT0.
Above-mentioned descending path loss measurement result can be following in one: the descending path loss measurement result of the DLCC associated by any ULCC, the descending path loss measurement result of specific DLCC associated by ULCC that in the DLCC associated by all ULCC that the descending path loss measurement result of DLPCC, UE configure, the minimum value of descending path loss measurement result or maximum or mean value, UE configure.Incidence relation between ULCC and DLCC can based on SIB2 instruction or RRC instruction or descending path loss witness mark or timing advance witness mark.
When UE reports described BSR, described descending path loss measurement result can be reported simultaneously.
(2) when radio condition is channel quality instruction (CQI) measurement result: when CQI measurement is lower than the CQI measurement thresholding preset, UE selects BT0; When CQI measurement is higher than the CQI measurement thresholding preset, UE selects BT1.
Above-mentioned CQI measurement can be following in one: the CQI measurement of the DLCC associated by any ULCC, the CQI measurement of specific DLCC associated by ULCC that in the DLCC associated by all ULCC that the CQI measurement of DLPCC, UE configure, the minimum value of CQI measurement or maximum or mean value, UE configure.Incidence relation between ULCC and DLCC can based on SIB2 instruction or RRC instruction or descending path loss witness mark or timing advance witness mark.
When UE reports described BSR, described CQI measurement can be reported simultaneously.
(3) when radio condition is power headroom reporting (PHR) (PHR) value: when PHR value is lower than the PHR thresholding preset, UE selects BT0; When PHR value is higher than the PHR thresholding preset, UE selects BT1.
Above-mentioned PHR value is the one in following: the PHR value of any ULCC that the minimum value of PHR or maximum or mean value, UE configure, specific the PHR value of ULCC, the PHR value of UE in all ULCC that the PHR value of ULPCC, UE configure.
When UE reports described BSR, described PHR value can be reported simultaneously.
The program based on thought for when radio condition is bad, upstream data rate higher under being greater than LTERel-8 single carrier case can not be reached and obtain larger uplink authorization, therefore still can use BT0 calculating BSR.The situation of MIMO also can use BT0.When radio condition is good, UE may obtain larger uplink authorization, therefore uses BT1 to be dispatched more accurately.
Scheme one can be combined with scheme two, such as, when UE is configured with multiple CC and radio condition is good, uses BT1; Otherwise use BT0.Other various possible combined situation is also had all to think within scope.
When triggering reports BSR, and when at least one ULCC has ascending resource, UE calculates number grade according to selected BT0 or BT1, generating BSRMACCE, reporting described BSR there being the ULCC of ascending resource.
The present invention is set forth further below with specific embodiment.
Following examples all add a kind of BSR form (called after BT1) for new on the basis of LTEBSR form (called after BT0).For adding more than a kind of scene no longer repeated description of BSR form, the mode that 2 kinds of forms can be adopted similar completes.ENB and UE all supports CA and multiple BSR form.BT0 is the BSR form of LTE; BT1 supports high data rate, can the fine-grained data represented between 150K to 1500K.Following table lists a kind of possible BT1, wherein the fine-grained buffer data denoting about 150K to 1500K between number (BufferSize is called for short BS) class 4 8-62.This table is only as a possible execution mode, and the present invention does not limit and must use this BSR form.Give the correct time when UE triggers on BSR, the BSR triggered here can be RegularBSR, PeriodicBSR or PaddingBSR, and carries out the selection of BSR form according to the rule of respective protocol.
As shown in Figure 6, be embodiment 1 that LTE-ACABSR reports:
UE selects BSR form according to the configuring condition of CC.
Step 601:eNB is that UE is configured with a ULCC;
Step 602:BSR triggers, and configured ULCC has ascending resource for new transmission, and UE uses BT0 calculate and generate BSR, reports described BSR;
Step 603:UE traffic needs increases, and eNB is that UE adds a ULCC; Now UE is configured with two ULCC.
Step 604:BSR triggers, and one of them configured ULCC has ascending resource for new transmission, and UE uses BT1 calculate and generate BSR, reports described BSR.
Step 605: owing to covering or the factor of load aspect, eNB deexcitation or connect to reshuffle by RRC and delete wherein 1 ULCC.
Step 606:BSR triggers, and ULCC has ascending resource for new transmission, and UE uses BT0 calculate and generate BSR, reports described BSR.
In this embodiment, the order of each step is a kind of possibility realized, and also has the possibility of other various order, and UE all can according to which kind of BSR tabular report of number decision choice for use of current ULCC configure or activate.
As shown in Figure 7, for LTE-ACABSR reports embodiment 2:
Step 701:UE is configured with 2 ULCC.
Step 702:UE is configured with radio condition threshold value; This threshold value measures (or CQI measure) based on descending path loss, based on all DLCCs of CC associated by DLPCC or all ULCC;
Minimum descending path loss in the descending path loss of step 703:DLPCC or described associated all DLCC is lower than threshold value (or corresponding CQI measures higher than another threshold value);
Step 704:BSR triggers, and at least 1 ULCC has ascending resource for new transmission, and UE uses BT1 to generate BSR, reports described BSR.
Step 705:UE radio conditions change, in the descending path loss of described DLPCC or described associated all DLCC, minimum descending path loss is higher than threshold value (or corresponding CQI measures lower than another threshold value);
Step 706:BSR triggers, and at least 1 ULCC has ascending resource for new transmission, and UE uses BT0 to generate BSR, reports described BSR.
Wherein, in above-mentioned steps 704, step 706, when UE reports described BSR, descending path loss measurement result or CQI measurement can be reported simultaneously.
In this embodiment, the order of each step is a kind of possibility realized, and also has the possibility of other various order, and UE all can according to which kind of BSR tabular report of above-mentioned radio condition choice for use of current the ULCC configuring or activate.
As shown in Figure 8, for LTE-ACABSR reports embodiment 3:
Step 801:UE is configured with 2 ULCC.
Step 102:UE is configured with radio condition threshold value; This threshold value based on PHR value, based on CC ULCC or UE that be ULPCC or all ULCC or specify;
Maximum PHR in PHR or ULCC of step 803:ULPCC or minimum PHR or UEPHR is higher than respective doors limit value;
Step 804:BSR triggers, and at least 1 ULCC has ascending resource for new transmission, and UE uses BT1 to generate BSR, reports described BSR.
Step 805:UE radio conditions change, in the PHR of described ULPCC or described all ULCC, maximum PHR or minimum PHR or UEPHR is less than respective doors limit value;
Step 806:BSR triggers, and at least 1 ULCC has ascending resource for new transmission, and UE uses BT0 to generate BSR, reports described BSR.
When UE reports described BSR in above-mentioned steps 804, step 806, PHR can be reported simultaneously.
In this embodiment, the order of each step is a kind of possibility realized, and also has the possibility of other various order, and UE all can according to which kind of BSR tabular report of above-mentioned radio condition choice for use of current the ULCC configuring or activate.
As shown in Figure 9, the UE of the embodiment of the present invention, comprises and selects module 91 and reporting module 92, wherein:
Described selection module 91 is arranged to: according to configuring condition and/or the radio condition selection BSR form of ULCC;
Described reporting module 92 is arranged to: report BSR according to the BSR form that described selection module 91 is selected to eNB.
Preferably, described selection module 91 is arranged to: according to configuring condition and/or radio condition selection BT0 or BT1 of ULCC; Wherein, described BT0 is the BSR form that LTE system uses, and described BT1 is the BSR form of the support high data rate that lte-a system uses.
Preferably, described selection module 91 is arranged to: when described UE is configured with 1 ULCC, selects BT0; When described UE is configured with the ULCC of more than 1, select BT1.
Preferably, described selection module 91 is arranged to: when described radio condition is descending path loss measurement result, instantly when walking along the street loss measurement result is higher than the descending path loss measurement result thresholding preset, select BT0, instantly, when walking along the street loss measurement result is lower than the descending path loss measurement result thresholding preset, BT1 is selected; Or, when described radio condition is CQI measurement, when CQI measurement is lower than the CQI measurement thresholding preset, select BT0, when CQI measurement is higher than the CQI measurement thresholding preset, select BT1; Or, when described radio condition is PHR value, when PHR value is lower than the PHR thresholding preset, select BT0, when PHR value is higher than the PHR thresholding preset, select BT1.
Described descending path loss measurement result can be following in one: the descending path loss measurement result of the DLCC associated by any ULCC, the descending path loss measurement result of specific DLCC associated by ULCC that in the DLCC associated by all ULCC that the descending path loss measurement result of DLPCC, UE configure, the minimum value of descending path loss measurement result or maximum or mean value, UE configure;
Described CQI measurement can be following in one: the CQI measurement of the DLCC associated by any ULCC, the CQI measurement of specific DLCC associated by ULCC that in the DLCC associated by all ULCC that the CQI measurement of DLPCC, UE configure, the minimum value of CQI measurement or maximum or mean value, UE configure;
Described PHR value can be following in one: the PHR value of any ULCC that the minimum value of PHR or maximum or mean value, UE configure, specific the PHR value of ULCC, the PHR value of UE in all ULCC that the PHR value of ULPCC, UE configure.
Preferably, described selection module 91 is also arranged to: determine the DLCC associated by ULCC according to the instruction in SIB2 or RRC instruction or descending path loss witness mark or timing advance witness mark.
Preferably, described reporting module 92 is also arranged to: when described radio condition is descending path loss measurement result, reports described descending path loss measurement result to described eNB; When described radio condition is CQI measurement, report described CQI measurement to described eNB; When described radio condition is PHR value, report described PHR value to described eNB.
Preferably, described reporting module 92 is arranged to: when triggering reports BSR, and when at least one ULCC has ascending resource, calculate buffer size rank according to selected BSR form, generating BSRMACCE, reporting described BSR there being the ULCC of ascending resource.
In above embodiment, because according to rule or configuration, eNB knows that UE selects the method for BSR form in advance, therefore unambiguously can know received BSR according to which kind of BSR form calculates, thus know and carry out uplink authorization according to great buffer area data volume, thus dispatch more accurately.Except UE with eNB judges based on identical rule, also simultaneously can in conjunction with or be used alone UE usage flag position or use different LCID to distinguish the kind of BSR form in the MAC sub-header of described BSRMACCE, or the method such as the kind of BSR form that uses according to certain condition notification UE of eNB.
The all or part of step that one of ordinary skill in the art will appreciate that in said method is carried out instruction related hardware by program and is completed, and described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Correspondingly, each module/unit in above-described embodiment can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Although the present invention is described in conjunction with specific embodiment, for a person skilled in the art, can modify when not deviating from the spirit or scope of the present invention and change.Such modifications and variations are considered within scope of the present invention and additional Claims scope.
industrial applicibility
The invention provides a kind of report method and UE of Buffer Status Report, UE selects BSR form according to the configuring condition of ULCC and/or radio condition, eNB and UE is made unambiguously to identify the kind of the BSR form that current transmission time interval (TTI) uses, UE can be made under LTE data rate and LTE-A high data rate situation all can to obtain fine-grained accurate scheduling, save Radio Resource, improve wireless resource utility efficiency.

Claims (13)

1. a report method of Buffer Status Report BSR, comprising:
User equipment (UE) selects buffer data quantity grade table according to the configuring condition of up UL component carrier CC and radio condition, or user equipment (UE) selects buffer data quantity grade table according to radio condition; And
Described UE reports BSR according to selected buffer data quantity grade table to evolved base station eNB;
Wherein, described radio condition comprises: descending path loss measurement result, channel quality indicator (CQI) measurement result or power headroom reporting (PHR) PHR value;
When described radio condition is descending path loss measurement result, UE selects the step of buffer data quantity grade table to comprise according to radio condition: when walking along the street loss measurement result is higher than the descending path loss measurement result thresholding preset instantly, UE selects the first data volume table of grading; Instantly, when walking along the street loss measurement result is lower than the descending path loss measurement result thresholding preset, UE selects the second data volume table of grading;
When described radio condition is channel quality indicator (CQI) measurement result, UE selects the step of buffer data quantity grade table to comprise according to radio condition: when CQI measurement is lower than the CQI measurement thresholding preset, UE selects the first data volume table of grading; When CQI measurement is higher than the CQI measurement thresholding preset, UE selects the second data volume table of grading;
When described radio condition is power headroom reporting (PHR) PHR value, UE selects the step of buffer data quantity grade table to comprise according to radio condition: when PHR value is lower than the PHR thresholding preset, UE selects the first data volume table of grading; When PHR value is higher than the PHR thresholding preset, UE selects the second data volume table of grading.
2. the method for claim 1, wherein:
Described first data volume table of grading is the buffer data quantity grade table that Long Term Evolution LTE system uses, and described second data volume table of grading is the buffer data quantity grade table of the support high data rate that senior Long Term Evolution lte-a system uses.
3. method as claimed in claim 2, wherein:
Described UE selects the step of buffer data quantity grade table to comprise according to the configuring condition of ULCC:
When described UE is configured with 1 ULCC, select the first data volume table of grading;
When described UE is configured with the ULCC of more than 2, select the second data volume table of grading.
4. the method for claim 1, wherein:
Described descending path loss measurement result is the one in following: the descending path loss measurement result of the minimum value of descending path loss measurement result or maximum or mean value in the DLCC associated by all ULCC that the descending path loss measurement result of descending DL main carrier PCC, UE configure, the descending path loss measurement result of the DLCC associated by any ULCC that UE configures, the DLCC associated by specific ULCC;
Described CQI measurement is the one in following: the CQI measurement of the minimum value of CQI measurement or maximum or mean value in the DLCC associated by all ULCC that the CQI measurement of DLPCC, UE configure, the CQI measurement of the DLCC associated by any ULCC that UE configures, the DLCC associated by specific ULCC;
Described PHR value is the one in following: the PHR value of any ULCC that the minimum value of PHR or maximum or mean value, UE configure, specific the PHR value of ULCC, the PHR value of UE in all ULCC that the PHR value of ULPCC, UE configure.
5. method as claimed in claim 4, described method also comprises:
The DLCC associated by ULCC is determined according to the instruction in system information block 2SIB2 or radio resource control RRC instruction or descending path loss witness mark or timing advance witness mark.
6. the method for claim 1, wherein:
When described radio condition is descending path loss measurement result, described method also comprises: when described UE reports BSR, also report described descending path loss measurement result to described eNB;
When described radio condition is CQI measurement, described method also comprises: when described UE reports BSR, also report described CQI measurement to described eNB;
When described radio condition is PHR value, described method also comprises: when described UE reports BSR, also report described PHR value to described eNB.
7. as the method in claim 1 ~ 6 as described in any one, wherein:
Described UE reports the step of BSR to comprise according to selected buffer data quantity grade table to eNB:
When triggering reports BSR, and when at least one ULCC has ascending resource, described UE calculates buffer data quantity grade according to selected buffer data quantity grade table, generating BSR media access control layer balancing boom MACCE, reporting described BSR there being the ULCC of ascending resource.
8. a user equipment (UE), comprises and selects module and reporting module, wherein:
Described selection module installation becomes: according to configuring condition and the radio condition selection buffer data quantity grade table of up UL component carrier CC, or select buffer data quantity grade table according to radio condition, wherein, described radio condition comprises: descending path loss measurement result, channel quality indicator (CQI) measurement result or power headroom reporting (PHR) PHR value;
Described reporting module is arranged to: the buffer data quantity grade table according to described selection model choice reports BSR to evolved base station eNB;
Described selection module is arranged to: when described radio condition is descending path loss measurement result, instantly when walking along the street loss measurement result is higher than the descending path loss measurement result thresholding preset, select the first data volume table of grading, instantly, when walking along the street loss measurement result is lower than the descending path loss measurement result thresholding preset, the second data volume table of grading is selected; When described radio condition is channel quality indicator (CQI) measurement result, when CQI measurement is lower than the CQI measurement thresholding preset, select the first data volume table of grading, when CQI measurement is higher than the CQI measurement thresholding preset, select the second data volume table of grading; When described radio condition is power headroom reporting (PHR) PHR value, when PHR value is lower than the PHR thresholding preset, select the first data volume table of grading, when PHR value is higher than the PHR thresholding preset, select the second data volume table of grading.
9. UE as claimed in claim 8, wherein:
Described first data volume table of grading is the buffer data quantity grade table that Long Term Evolution LTE system uses, and described second data volume table of grading is the buffer data quantity grade table of the support high data rate that senior Long Term Evolution lte-a system uses.
10. UE as claimed in claim 9, wherein:
Described selection module is arranged to: when described UE is configured with 1 ULCC, selects the first data volume table of grading; When described UE is configured with the ULCC of more than 2, select the second data volume table of grading.
11. UE as claimed in claim 8, wherein:
Described descending path loss measurement result is the one in following: the descending path loss measurement result of the minimum value of descending path loss measurement result or maximum or mean value in the DLCC associated by all ULCC that the descending path loss measurement result of descending DL main carrier PCC, UE configure, the descending path loss measurement result of the DLCC associated by any ULCC that UE configures, the DLCC associated by specific ULCC;
Described CQI measurement is the one in following: the CQI measurement of the minimum value of CQI measurement or maximum or mean value in the DLCC associated by all ULCC that the CQI measurement of DLPCC, UE configure, the CQI measurement of the DLCC associated by any ULCC that UE configures, the DLCC associated by specific ULCC;
Described PHR value is the one in following: the PHR value of any ULCC that the minimum value of PHR or maximum or mean value, UE configure, specific the PHR value of ULCC, the PHR value of UE in all ULCC that the PHR value of ULPCC, UE configure.
12. UE as claimed in claim 1, wherein:
Described reporting module is also arranged to: when described radio condition is descending path loss measurement result, reports described descending path loss measurement result to described eNB; When described radio condition is CQI measurement, report described CQI measurement to described eNB; When described radio condition is PHR value, report described PHR value to described eNB.
13. as the UE in claim 8 ~ 12 as described in any one, wherein:
Described reporting module is arranged to: when triggering reports BSR, and when at least one ULCC has ascending resource, buffer data quantity grade is calculated according to selected buffer data quantity grade table, generating BSR media access control layer balancing boom MACCE, reporting described BSR there being the ULCC of ascending resource.
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