CN100512565C - Method for enhancing wireless communication up-grouping dispatch - Google Patents

Abstract

The invention discloses a method for scheduling UEs using RG commands, which is characterized in that: when the UE needs scheduling authorization, the minimum-grant-index-step-size information in the NBAP protocol and the RRC protocol is used to configure the UE to use SG, so that the UE can schedule the UE by sending the RG command when receiving the RG. Through this method, the RNC configures an appropriate SG boost step for the UE, so that when the UE uses the smallest SG and receives the RG, it can still effectively schedule the UE by sending the RG command, and quickly improve the UE's scheduling authorization. Therefore, the efficiency of HSUPA packet scheduling is improved.

Description

A method for improving wireless communication uplink packet scheduling

technical field

The invention relates to the communication field, in particular to a method for improving wireless communication uplink packet scheduling.

Background technique

The WCDMA (Wideband Code Division Multiple Access) system is a broadband cellular wireless communication system based on CDMA. The WCDMA system supports more types of services and higher data rate service transmission capabilities. HSUPA (High Speed Uplink Packet Access) is a WCDMA system enhancement technology for uplink transmission capability. HSUPA technology includes shorter TTI (Transmission Time Interval), Node B-based scheduler and HARQ (Hybrid Automatic Retransmission reQuest), the new transmission channel E-DCH (Enhanced Dedicate Channel) adopts these key technologies, HSUPA system can be compared with traditional The WCDMA version of WCDMA has significantly improved the transmission performance of uplink services, about 50%-70% increase in system capacity, 20%-55% reduction in end-to-end packet delay, and user packet call There is about a 50% increase in traffic. The WCDMA system using HSUPA technology includes CN (Core Network), RNC (Radio Network Controller), Node B and UE (User Equipment). The Node B includes several cells (Cells), which are public wireless resources in the system that serve UEs in the same area. In HSUPA, the uplink load of the system can be measured through the cells. Node B's scheduling of UEs is done in units of cells. In HSUPA, the function of controlling and scheduling user services is placed in the Node B, and the Node B sends the service scheduling request (Scheduling Information) according to the user's periodic or event trigger, including the occupation status of the user's service buffer (Buffer Occupancy Status), service flow priority (Priority), UE remaining transmission power (Uplink Power Headroom), and according to the uplink interference of the cell and the load and the processing capacity of the base station, different authorization commands are sent to different UEs ( Grants), the UE selects the appropriate transport format combination (Enhanced Transport Format Combination) from the E-TFC table (Enhanced Transport Format Combination Table) pre-configured by the RNC to the UE according to the authorization command of the Node B, and uses this E-TFC The corresponding power offset (Power Offset), sends the data corresponding to the authorized size to the NodeB within a transmission time interval (TTI). Refer to Figure 2 for the functional structure of the HSUPA system.

In HSUPA, authorization is divided into absolute authorization AG (Absolute Grants) and relative authorization RG (Relative Grants). AG specifies the absolute size of the transmit power ratio corresponding to the amount of data that the UE can send, also known as Serving Grants (Serving Grants). ), and RG specifies the relative size that allows the UE to transmit the power ratio. This relative size is expressed in steps, and its value can be UP (increase the scheduling amount by one step), DOWN (reduce the scheduling amount by one step) Long scheduling amount) and HOLD (keep the existing scheduling amount).

The WCDMA system is a multi-user CDMA wireless system. In the cells of the WCDMA system, the uplink UE transmission time is asynchronous, resulting in the non-orthogonality of the uplink transmission channels between different UEs, which also results in the uplink transmission of different UEs. The transmission signals interfere with each other. Therefore, the more uplink UE transmission channels in the cell, or the greater the transmission power of the UE (the larger the SG), the greater the uplink interference of the system. The degree of interference is expressed in RTWP (Received Total Wideband Power) to represent. The operation of the WCDMA system must keep the uplink interference within a reasonable threshold, otherwise the system will collapse due to the power increase caused by interference overload or a large number of UEs will drop calls and other serious problems.

The HSUPA scheduler controls the data transmission rate and transmission power of each UE in the cell through the AG and RG, so as to ensure that the uplink interference of the cell caused by the load of these UEs cannot exceed the interference threshold. At the same time, according to the actual situation of the UE's demand for data transmission, dynamically determine and continuously update the data transmission rate and transmission power (ie SG) of each UE to ensure the QoS of the bearer service on each UE.

In HSUPA, HARQ (Hybrid Automatic RepeatreQuest) is also used, which is a multi-channel SAW (See And Wait) parallel retransmission operation mechanism. In the new 3GPP version R6 standard, HARQ technology is applied to the physical layer, thereby reducing the delay of high-layer signaling transmission and further improving system performance. In the HARQ retransmission mechanism, there are multiple HARQ processes, and each process sends data packets in sequence. For a UE, only one HARQ process sends data at the same time. When a HARQ process sends a data packet, when the Node B receives it correctly and the CRC check is correct, it will return a correct decoding indication ACK, otherwise it will return an error block indication NACK. After the UE receives the NACK, the corresponding HARQ process needs to retransmit the data packet at the physical layer; if the UE receives the ACK, the corresponding HARQ process can send a new data packet. At the same time, other HARQ processes can send different data packets respectively without being affected by whether the HARQ process receives an ACK/NACK response. Using multi-channel HARQ reduces the waiting time of the SAW protocol and improves transmission efficiency. In HSUPA's HARQ protocol, synchronization technology is used, that is, the HARQ process number currently sending data has a strict correspondence with the public timing of the system, so through the public timing of the system (such as the system frame number of the cell SFN System Frame Number) , the number of the HARQ process currently sending data can be obtained directly.

In the 3GPP standard (25.321), the relative authorization command RG is combined with the HARQ stop protocol, and the sending time of the RG command determines the number of the UE HARQ process corresponding to the RG command, as shown in Figure 4, corresponding to 10ms TTI (Transmission Time Interval), the protocol stipulates that there are 4 HARQ processes to send data. The authorization used by each HARQ process to send data last time is called LUPR (Last Used Power Ratio). This LUPR can correspond to an index of an SG table (see Table 1) in 25.321 according to the calculation method specified in 25.321. Value SG-LUPR. When an RG command corresponds to a certain HARQ process of the UE according to the time relationship, the SG-LUPR is first calculated according to the LUPR of the corresponding HARQ process of the UE, and the new service authorization SG of the UE is updated to SG-LUPR+STEP. When RG=UP, STEP ranges from 1 to 3 according to the size of the current SG-LUPR; when RG=DOWN, STEP=-1;

Table 1: Scheduling Grant Table (SG-table)

Index Scheduled Grant 37 (168/15)²＊6 36 (150/15)²＊6 35 (168/15)²＊4 34 (150/15)²＊4 33 (134/15)²＊4 32 (119/15)²＊4 31 (150/15)²＊2 30 (95/15)²＊4 29 (168/15)² 28 (150/15)² 27 (134/15)² 26 (119/15)² 25 (106/15)² twenty four (95/15)² twenty three (84/15)² twenty two (75/15)² twenty one (67/15)² 20 (60/15)² 19 (53/15)² 18 (47/15)² 17 (42/15)² 16 (38/15)² 15 (34/15)² 14 (30/15)² 13 (27/15)² 12 (24/15)² 11 (21/15)² 10 (19/15)² 9 (17/15)² 8 (15/15)² 7 (13/15)² 6 (12/15)² 5 (11/15) ² 4 (9/15)² 3 (8/15)² 2 (7/15)² 1 (6/15)² 0 (5/15)²

Table 2 10ms TTI E-DCH Transport Block Size Table 1

E-TFCI TB Size(bits) E-TFCI TB Size(bits) E-TFCI TB Size(bits) 0 18 41 5076 82 11850 1 186 42 5094 83 12132 2 204 43 5412 84 12186 3 354 44 5430 85 12468 4 372 45 5748 86 12522 5 522 46 5766 87 12804 6 540 47 6084 88 12858 7 690 48 6102 89 13140 8 708 49 6420 90 13194 9 858 50 6438 91 13476 10 876 51 6756 92 13530 11 1026 52 6774 93 13812 12 1044 53 7092 94 13866 13 1194 54 7110 95 14148 14 1212 55 7428 96 14202 15 1362 56 7464 97 14484 16 1380 57 7764 98 14556 17 1530 58 7800 99 14820 18 1548 59 8100 100 14892 19 1698 60 8136 101 15156 20 1716 61 8436 102 15228 twenty one 1866 62 8472 103 15492 twenty two 1884 63 8772 104 15564 twenty three 2034 64 8808 105 15828 twenty four 2052 65 9108 106 15900 25 2370 66 9144 107 16164 26 2388 67 9444 108 16236 27 2706 68 9480 109 16500 28 2724 69 9780 110 16572 29 3042 70 9816 111 17172 30 3060 71 10116 112 17244 31 3378 72 10152 113 17844 32 3396 73 10452 114 17916 33 3732 74 10488 115 18516 34 3750 75 10788 116 18606 35 4068 76 10824 117 19188 36 4086 77 11124 118 19278 37 4404 78 11178 119 19860 38 4422 79 11460 120 19950 39 4740 80 11514 40 4758 81 11796

There is a corresponding relationship between the service authorization SG of the UE and the size of the data packet that the UE can send. This corresponding relationship can refer to the E-TFC selection process of 3GPP TS 25.321. Here we only list a possible corresponding relationship (as shown in Figure 5) to illustrate the existing problems: the TBS table that can be used by the UE (see Table 2, Table 2 is just a similar table in the 3GPP TS 25.321 agreement One, which has a representative meaning), the UE sends the smallest TB=18 and the corresponding authorized SG is SG-LUPR=0, the UE sends the next smallest TB=186 and the corresponding authorized SG is SG-LUPR=4, only one RG command is passed It is impossible for the UE to obtain a higher transmission authorization. Of course, the scheduler can directly configure the SG of the UE by sending the AG absolute authorization command, but since the AG command sends the shared resource of the cell, and the RG command uses the dedicated resource of the UE, when a large number of UEs in the cell need to be scheduled at the same time, Therefore, using the RG command is more efficient than using the AG command. However, since the SG required by the UE to send TB=186 is within the range specified by the 3GPP protocol (1 to 3 steps), it is impossible to increase the SG of the UE to the authorization corresponding to the ability to send TB=186 data packets through the RG command.

Contents of the invention

The purpose of the present invention is to provide a method for improving wireless communication uplink packet scheduling. Through this method, the RNC configures an appropriate SG lifting step for the UE, so that when the UE uses the smallest SG, it can still receive the RG. The UE is effectively scheduled by sending the RG command, and the scheduling authorization of the UE is rapidly increased, thereby improving the efficiency of HSUPA group scheduling.

In order to solve the above technical problems, the present invention provides a method for scheduling UEs using RG commands, which is characterized in that: when the UE needs scheduling authorization, the Minum-Grant-Index-Step-Size information in the NBAP protocol and the RRC protocol To configure the UE to use the smallest SG, so that when the UE receives the RG command, it can schedule the UE through the received RG command, wherein the Mininum-Grant-Index-Step-Size information is included in the E-DPCH of the NBAP protocol Channel information and the enhanced dedicated physical control channel of the RRC protocol and the E-DCH reconfiguration information channel.

The present invention also provides a method for improving wireless communication uplink packet scheduling, which is applied when the UE uses the minimum SG and the UE receives the relative authorization command RG=UP from the scheduler, and updates the SG of the UE according to the set configuration. The method includes :

(1) The RNC determines the size of the RLC PDU according to the type of uplink service, wherein the minimum RLC PDU size of the service requiring HSUPA scheduling corresponds to the authorization Mini_Sch_Grant required for the minimum scheduled transmission of the UE;

(2), the RNC determines the minimum authorization Minimum_Grant required when the UE only transmits data packets of TB=18;

(3), RNC respectively determines that Mini_Sch_Grant corresponds to the index SG-Ind-Mini-Sch in the SG table and Minimum_Grant corresponds to the index SG-Ind-Mini in the SG table, and determines Delta-SG-Ind;

(4), RNC configures Delta-SG-Ind to Node B through the Minimum-Grant-index-step-size information element in the NBAP signaling;

(5) The RNC configures the Delta-SG-Ind to the UE through the Minimum-Grant-index-step-size information element in the RRC signaling.

According to the method of the present invention, in described step (3), RNC utilizes following formula to determine Delta-SG-Ind:

Delta-SG-Ind＝SG-Ind-Mini-Sch-SG-Ind-Mini

According to the method of the present invention, in the step (4), the RNC passes through the NBAP signaling: the cell Minimum-Grant-index-step-size in the RADIOLINK RECONFIGURATION PREPARE/RADIO LINK RECONFIGURATION REQUEST/RADIOLINK SETUP REQUEST/RADIO LINK ADDITION message will Delta-SG-Ind is configured to Node B.

According to the method of the present invention, in the step (5), the RNC sends the RRC signaling: the cell Minimum-Grant- index-step-size configures Delta-SG-Ind to UE.

Compared with the prior art, the method provided by the present invention has the following beneficial effects: In the present invention, the RNC configures an appropriate SG raising step size for the UE, so that when the UE uses the smallest SG and receives the RG, it can still pass The RG command is sent to effectively schedule the UE, and the scheduling authorization of the UE is rapidly increased, thereby improving the efficiency of HSUPA group scheduling. In addition, through the present invention, the UE in the minimum scheduling authorization state can be scheduled by using the RG without using an AG command, thereby saving scheduling resources and improving scheduling efficiency.

Description of drawings

Fig. 1 is the operation flowchart of the present invention;

Fig. 2 is a schematic diagram describing the functional structure of the HSUPA system;

Fig. 3 has described the information flowchart between each function module in the HSUPA system;

Fig. 4 is a relation diagram describing the effect of the RG command on the HARQ process in the HSUPA system;

Fig. 5 is a diagram describing a correspondence relationship between SG and transport block size.

Detailed ways

In order to facilitate a deep understanding of the technical content of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The present invention adopts the E-DPCH Information (E-DPCH information, Enhanced Dedicated Physical Channel Information) in the Node B Application Part (NBAP: Node B Application Part) protocol, and the E-DPDCH Info (Enhanced Dedicated Channel Information) in the RRC (Radio Resource Control) protocol. A new Mininum-Grant-Index-Step-Size information element (IE, Information Element, such as Table 3), to configure the appropriate SG boost step size for the UE, so that when the UE uses the smallest SG and receives the RG, it can still effectively schedule the UE by sending the RG command, and quickly improve the UE scheduling Authorization, thus improving the efficiency of HSUPA packet scheduling. What I want to explain here is that the meaning of Mininum-Grant-Index-Step-Size and the subsequent mention of Mininum Grant Index Step Size are exactly the same, and different writing methods are used in different places to make the expression clearer.

The definition of the Mininum-Grant-Index-Step-Size information element to be added in the NBAP protocol and the RRC protocol is shown in Table 3; the situation of adding the Mininum-Grant-Index-Step-Size information element in the E-DPCH Information is as follows As shown in Table 4, the addition of the Mininum-Grant-Index-Step-Size information element in the E-DCH reconfiguration information is shown in Table 5, and the addition of the Mininum-Grant-Index-Step-Size information element in the E-DPDCH Info The situation is shown in Table 6:

Table 3 Minimum-Grant-Index-Step-Size

IE/Group Name Presence Range IE Type and Reference SemanticsDescription Minimum-Grant-Index-Step Size INTEGER(0..15) Refers to an index in the “SG-Table”(see[32]).

Table 4 E-DPCH Information information element

Table 5 E-DCH reconfiguration information

Information Element/Groupname need Multi Type and reference Semanticsdescription Version E-DCH RL Info new serving cell OP >Primary CPICH info MP PrimaryCPICHinfo10.3.6.60 Indicates scheduling E-DCH cells from the active set cells. REL-6 >E-AGCH Info MP E-AGCHInfo10.3.6.100 REL-6 >Serving Grant OP REL-6 >>Serving Grant value MP Integer(0..37, 38) (0..37) indicates E-DCHserving grant index as defined in [15]; index38 means zero grant. REL-6 >>Primary/Secondary GrantSelector MP Enumerated("primary", "secondary") Indicates whether the Serving Grant is received with a PrimaryE-RNTI orSecondaryE-RNTI. REL-6 E-DPCCH/DPCCH power offset OP Integer(0..8) Refer to quantization of the power offset in [28]. REL-6 Reference E-TFCls OP 1to8 See[29]. >Reference E-TFCI MP Integer(0..127) REL-6 >Reference E-TFCI PO MP Integer(0..29) Refer to quantization of the power offset in [28]. REL-6 Power Offset for Scheduling Info OP Integer(0..6) Only used when noMACdPDU's are included in the same REL-6

MACe PDU. Unit is in dB. 3-Index-Step Threshold OP Integer(0..37) Refers to an index in the “SG-Table”(see[15]). REL-6 2-Index-Step Threshold OP Integer(0..37) Refers to an index in the “SG-Table”(see[15]). REL-6 Mininum-Grant-Index-StepSize OP Integer(0-.16) Refers to an index in the “SG-Table”(see[15]). Default value is 0. REL-6 >E-HICH Information OP E-HICHInfo10.3.6.101 This IE is not present if the servingE-DCH cell is added to the activeset with this message. REL-6 >CHOICE E-RGCH Information OP This IE is not present if the servingE-DCH cell is added to the activeset with this message >>E-RGCH Information E-RGCHInfo10.3.6.102 REL-6 >>E-RGCH release indicator REL-6 E-DCH RL Info other cells OP 1to<maxEDCHRL> This IE is not allowed to include information on a RL added by this message >Primary CPICH info MP PrimaryCPICHinfo10 3 6 60 REL-6 >CHOICE E-HICH Information OP

>>E-HICH Information E-HICHInfo10.3.6.101 REL-6 >>E-HICH release indicator REL-6 >CHOICE E-RGCH Information OP >>E-RGCH Information E-RGCHInfo10.3.6.102 REL-6 >>E-RGCH release indicator REL-6

Table 6 E-DPDCH Info

In the present invention, the RNC configures an SG update step size N (0≤N≤15) for the UE, and this step size is only valid when the UE uses the smallest SG. When the UE is using the minimum SG and receives the relative grant command RG=UP from the scheduler, the UE’s SG can be updated according to the pre-configured lifting step size, so as to ensure that the UE can obtain a high enough grant to send a higher bit rate The data.

Concrete operation steps that the present invention comprises are as follows:

Step 1: The RNC determines the size of the RLC PDU according to the type of uplink service, and the minimum RLC PDU size of the service requiring HSUPA scheduling can correspond to the authorization Mini_Sch_Grant required for the minimum scheduled transmission of the UE;

Step 2: RNC calculates the minimum authorization Minimum_Grant required when the UE only transmits data packets with TB=18;

Step 3: RNC calculates that Mini_Sch_Grant corresponds to index SG-Ind-Mini-Sch in Table 1 and Minimum_Grant corresponds to index SG-Ind-Mini in Table 1, and Minimum_Grant usually corresponds to index 0 in Table 1. Calculate Delta-SG-Ind:

Delta-SG-Ind＝SG-Ind-Mini-Sch-SG-Ind-Mini(1)

Step 4: RNC through NBAP signaling (Node B Application Part): RADIO LINK RECONFIGURATION PREPARE/RADIO LINK RECONFIGURATION REQUEST/RADIOLINK SETUP REQUEST/RADIO LINK ADDITION information element (InformationElement) Minimum-Grant-index-step-size Delta - SG-Ind is configured to Node B;

Step 5: RNC signaling through RRC (Radio Resource Control): CELL UPDATE CONFIRM/PHYSICAL CHANNEL RECONFIGURATION/TRANSPORT CHANNELRECONFIGURATION/RADIO BEAR SETUP REQUEST/RADIO BEAR RECONFIGURATION/CELL UPDATE CONFIRM information element (InformationElement-index-step-Grant) Minimum -size configures Delta-SG-Ind to UE.

In this way, when the UE's SG is equal to Minimum_Grant, the UE receives the RG=UP command, and the UE's SG is updated to SG=Minimum_Grant+Delta-SG-Ind, which can ensure that the UE's SG can send the SG-Ind-Mini-Sch corresponding The RLC PDU SIZE data packet, the SG of the UE can be updated according to the pre-configured lifting step size, so as to ensure that the UE can obtain a high enough authorization to send data at a higher bit rate. Through the present invention, the UE in the minimum scheduling authorization state can be scheduled by using the RG without using an AG command, thereby saving scheduling resources and improving scheduling efficiency.

The present invention will be further described below with an embodiment in which the RNC dynamically allocates the RG step size in an HSUPA system.

According to invention step 1, when UEi initiates a service, the RNC first determines the size of the RLC PDU according to the service type, for example, 160, plus message overhead, corresponding TB=186, Mini_Sch_Grant=(9/15)^2;

According to invention step 2, the size of Minimum_Grant when RNC calculates TB=18 is (5/15)^2;

According to the invention step 3, the SG-Ind-Mini-Sch corresponding to the Mini_Sch_Grant is 4, and the SG-Ind-Mini corresponding to the Minimum_Grant is 0, so Delta-SG-Ind=4;

According to step 4 of the invention, the RNC passes through the NEAP signaling (Node B Application Part): RADIOLINK RECONFIGURATION PREPARE/RADIO LINK RECONFIGURATION REQUEST/RADIO LINK SETUP REQUEST in the E-DPCH Information cell (InformationElement) (shown in Table 3) Minimum-Grant-index-step size configures Delta-SG-Ind=4 to Node B;

According to invention step 5, RNC passes RRC signaling (Radio Resource Control): E-DPDCH Info in CELLUPDATE CONFIRM/PHYSICAL CHANNEL RECONFIGURATION/TRANSPORT CHANNELRECONFIGURATION/RADIO BEAR SETUP REQUEST/RADIO BEARRECONFIGURATION/CELL UPDATE CONFIRM message (as shown in Table 6 ) and E-DCH reconfiguration information (as shown in Table 5), the Minimum-Grant-index-step-size in the information element (Information Element) configures Delta-SG-Ind=4 to the UE.

At this time, when the SG of the UE is Mininum_Grant, the RG=UP command can increase the SG of the UE to SG=Mininum_Grant+4, and at this time, the SG of the UE can send a data packet of TB=186.

Of course, the present invention can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the present invention without departing from the spirit and essence of the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (5)

1, the method that a kind of RG of use order is dispatched UE, it is characterized in that: when UE needs scheduling authorization, come configuration UE to use minimum authorization of service SG by the Mininum-Grant-Index-Step-Size information in NBAP agreement and the RRC agreement, make UE when receiving relative authorization RG order, can dispatch UE by the RG order that receives, wherein, described Mininum-Grant-Index-Step-Size information is included in the enhancing Dedicated Physical Control Channel of the enhancing dedicated channel E-DCH channel information of node B application part NBAP agreement and RRC agreement and strengthens in the dedicated channel E-DCH reconfiguration message channel.

2, a kind of method that improves wireless communication up-grouping dispatch, be applied in UE when using minimum SG and UE receive the relative authorization command RG=UP of scheduler, according to the SG of the config update UE that sets, described method comprises:

(1), radio network controller (RNC) is according to the size of the type decided wireless link control protocol data cell RLC PDU of uplink service, the minimum RLC PDU size size that wherein needs to carry out the business of HSUPA scheduling corresponds to the needed mandate of the minimum scheduled transmission Mini_Sch_Grant of UE;

(2), RNC determines the minimum authorization Minimum_Grant that needs when UE only transmits the packet of TB=18;

(3), RNC determine respectively Mini_Sch_Grant corresponding to the index SG-Ind-Mini-Sch in the SG table and Minimum_Grant corresponding to the index SG-Ind-Mini in the SG table, and definite SG change indication Delta-SG-Ind;

(4), RNC disposes the B to Node by the minimum authorization index step sizes Minimum-Grant-index-step-size cell in the NBAP signaling with Delta-SG-Ind;

(5), RNC disposes Delta-SG-Ind to UE by the Minimum-Grant-index-step-size cell in the RRC signaling.

3, method as claimed in claim 2 is characterized in that: in the described step (3), RNC utilizes following formula to determine Delta-SG-Ind:

De l ta-SG-Ind＝SG-Ind-Mini-Sch-SG-Ind-Mini

4, method as claimed in claim 2, it is characterized in that: in the described step (4), RNC is by the NBAP signaling: the cell Minimum-Grant-index-step-size in the RADIO LINK RECONFIGURATION PREPARE/RADIO LINKRECONFIGURATION REQUEST/RADIO LINK SETUP REQUEST/RADIO LINKADDITION message disposes the B to Node with Delta-SG-Ind.

5, method as claimed in claim 2, it is characterized in that: in the described step (5), RNC is by the RRC signaling: the cell Minimum-Grant-index-step-size in the CELL UPDATE CONFIRM/PHYSICAL CHANNEL RECONFIGURATION/TRANSPORT CHANNEL RECONFIGURATION/RADIO BEAR SETUP REQUEST/RADIOBEAR RECONFIGURATION/CELL UPDATE CONFIRM message disposes Delta-SG-Ind to UE.

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