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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这里需要注意 step1-step4是一个循环的过程，意思就是说从01011(11) – 11011(27), 一共要有16个循环, 每个循环都会有paging.

1

The SS transmits a Paging 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 an RRCConnectionRequest 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 containing RRCConnectionSetup, 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 触发竞争性随机接入, Msg4里只含有CRI，没有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, 即使该LCID里的数据是RRC connection setup. UE也不做解析，直接丢弃

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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4

Check: For 5 seconds after Step3, does the UE transmit RRCConnectionSetupComplete 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 = http://www.mamicode.com/0, Timer State = Expire

// RRC 状态变为 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 a Paging message including a matched identity.

<--

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6

The UE transmits an RRCConnectionRequest message.

-->

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7

The SS transmits a valid MAC PDU containing RRCConnectionSetup, 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 an RRCConnectionSetupComplete 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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