St

PRocedure

Message Sequence

TP

Verdict

UE log and comments

U - S

Message

EXCEPTION:Steps 1 to 4 shall be repeated for decreasing reserved LCID values from 01011 to 11011.

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這里需要注意 step1-step4是一個(gè)循環(huán)的過程，意思就是說從01011(11) – 11011(27), 一共要有16個(gè)循環(huán),每個(gè)循環(huán)都會(huì)有paging.

1

The SS transmits aPaging message including a matched identity.

<--

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2017 Jan 9  08:04:14.309  [62] 0xB0C0  LTE RRC OTA Packet  -- PCCH / Paging

Radio Bearer ID = 0, Physical Cell ID = 0

Freq = 300

SysFrameNum = 717, SubFrameNum = 9

PDU Number = PCCH Message,   Msg Length = 7

SIB Mask in SI = 0x00

Interpreted PDU:

value PCCH-Message ::=

{

 message c1 : paging :

     {

       pagingRecordList

       {

         {

           ue-Identity s-TMSI :

             {

               mmec '00000001'B,

               m-TMSI '11000010 00110100 01010110 01111000'B

             },

           cn-Domain ps

         }

       }

     }

}

2

The UE transmits anRRCConnectionRequest message.

-->

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2017 Jan  9  08:04:14.311  [32]  0xB0C0  LTE RRC OTA Packet  --  UL_CCCH / RRCConnectionRequest
Pkt Version = 13
RRC Release Number.Major.minor = 12.7.4
Radio Bearer ID = 0, Physical Cell ID = 0
Freq = 300
SysFrameNum = N/A, SubFrameNum = 0
PDU Number = UL_CCCH Message,    Msg Length = 6
SIB Mask in SI =  0x00
 
Interpreted PDU:
 
value UL-CCCH-Message ::= 
{
  message c1 : rrcConnectionRequest : 
      {
        criticalExtensions rrcConnectionRequest-r8 : 
          {
            ue-Identity s-TMSI : 
              {
                mmec '00000001'B,
                m-TMSI '11000010 00110100 01010110 01111000'B
              },
            establishmentCause mt-access,
            spare '0'B
          }
      }
}

3

The SS Transmits a valid MAC PDU containingRRCConnectionSetup, and Contention Resolution Identity MAC Control Elementexcept for LCID in MAC Header set to reserved value 11011 or lower (depending on iteration number).

<--

MAC PDU

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// RRC connection request 觸發(fā)競(jìng)爭(zhēng)性隨機(jī)接入, Msg4里只含有CRI，沒有RRC connection setup
2017 Jan  9  08:04:14.367  [2A]  0xB063  LTE MAC DL Transport Block
SubPacket - ( DL Transport Block Subpacket )
   Version = 2
   Subpacket Size = 44
   Downlink Transport Block V2:
      Number of samples = 2
      ------------------------------------------------------------------------------------------------
      |     |      |          |    |       |    |     |                        |               |     |
      |     |      |          |HARQ|DL TBS |RLC |HDR  |                        |               |     |
      |SFN  |Sub-FN|RNTI Type |ID  |(bytes)|PDUs|LEN  |Mac Hdr + CE            |LC ID          |LEN  |
      ------------------------------------------------------------------------------------------------
      |  723|     7|  T-C-RNTI|   5|      7|   0|    7| 1C 40 1C 23 45 67 84   |           CRID|    6|
 
2017 Jan  9  08:04:14.365  [18]  0xB16A  LTE Contention Resolution Message (MSG4) Report
Version              = 1
SFN                  = 723
Sub-fn               = 7
Contention Result    = Pass
UL ACK Timing SFN    = 724
UL ACK Timing Sub-fn = 1
 
// LCID = 11, 即使該LCID里的數(shù)據(jù)是RRC connection setup. UE也不做解析，直接丟棄
2017 Jan  9  08:04:14.467  [CC]  0xB063  LTE MAC DL Transport Block
SubPacket - ( DL Transport Block Subpacket )
   Version = 2
   Subpacket Size = 20
   Downlink Transport Block V2:
      Number of samples = 1
      ------------------------------------------------------------------------------------------------
      |     |      |          |    |       |    |     |                        |               |     |
      |     |      |          |HARQ|DL TBS |RLC |HDR  |                        |               |     |
      |SFN  |Sub-FN|RNTI Type |ID  |(bytes)|PDUs|LEN  |Mac Hdr + CE            |LC ID          |LEN  |
      ------------------------------------------------------------------------------------------------
      |  729|     2|    C-RNTI|   6|     26|   0|    1| 0B                     |             11|   -1|
 

EXCEPTION: In parallel with step 4, UE may execute parallel behaviour defined in table 7.1.1.1.3.2-2

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2017 Jan  9  08:04:14.311  [32]  0xB0C0  LTE RRC OTA Packet  --  UL_CCCH / RRCConnectionRequest
Pkt Version = 13
RRC Release Number.Major.minor = 12.7.4
Radio Bearer ID = 0, Physical Cell ID = 0
Freq = 300
SysFrameNum = N/A, SubFrameNum = 0
PDU Number = UL_CCCH Message,    Msg Length = 6
SIB Mask in SI =  0x00
 
Interpreted PDU:
 
value UL-CCCH-Message ::= 
{
  message c1 : rrcConnectionRequest : 
      {
        criticalExtensions rrcConnectionRequest-r8 : 
          {
            ue-Identity s-TMSI : 
              {
                mmec '00000001'B,
                m-TMSI '11000010 00110100 01010110 01111000'B
              },
            establishmentCause mt-Access,
            spare '0'B
          }
      }
}
 

4

Check: For 5 seconds after Step3, does the UE transmitRRCConnectionSetupComplete message?

-->

RRCConnectionSetupComplete

1

F

// T300 (1000ms) expire

2017 Jan  9  08:04:15.311  [3D]  0x1FFB  Event  --  EVENT_LTE_RRC_TIMER_STATUS
Payload String = Timer Name = T300, Timer Value = 0, Timer State = Expire
 
// RRC狀態(tài)變?yōu)?/strong> Idle camped
2017 Jan  9  08:04:15.312  [3D]  0x1FFB  Event  --  EVENT_LTE_RRC_STATE_CHANGE
Payload String = RRC State = Idle Camped
 

5

The SS transmits aPaging message including a matched identity.

<--

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6

The UE transmits anRRCConnectionRequest message.

-->

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7

The SS transmits a valid MAC PDU containingRRCConnectionSetup, and Contention Resolution Identity MAC Control Element and LCID in MAC Header set correctly to CCCH 00000

<--

MAC PDU

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8

Check: does the UE transmit anRRCConnectionSetupComplete message including SERVICE REQUEST message?

-->

RRCConnectionSetupComplete

2

P

P

9-12

Steps 6 to 9 of the generic radio bearer establishment procedure (TS 36.508 4.5.3.3-1) are executed to successfully complete the service request procedure.

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