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LTE TS36.523-1 7.1.1.1

2019-11-09 18:47:40
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7.1.1.1.1                   TestPurpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state and after transmitting a RRCConnectionRequest message }

ensure that {

 when { UE receives a MAC PDU on DL SCHandaddressed to its T-CRNTI but including a reserved value for LCID }

   then{ UE discards the MAC PDU }

           }

 

(2)

with { UE in E-UTRA RRC_IDLE state and after transmitting a RRCConnectionRequest message }

ensure that {

 when { UEreceives a MAC PDU on DL SCHand addressed to its T-CRNTI with value‘00000’B as LCID }

   then{ UE forwards to upper layers the disassembled anddemultiplexedSDU on logical channel CCCH }

           }

 

 

Table7.1.1.1.3.2-1: Main behaviour

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.

-

-

-

-

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 aPaging message including a matched identity.

<--

-

-

-

-

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.

-->

-

-

-

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

-

-

// 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

-

-

-

-

-

 

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 aPaging message including a matched identity.

<--

-

-

-

-

6

The UE transmits anRRCConnectionRequest message.

-->

-

-

-

-

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

-

-

-

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.

-

-

-

-

-

 

【问题1】Paging中的S-TMSI是哪来的？UE怎么知道寻呼的是自己呢？

【答】：(1) paging ID有两种，一种是S-TMSI,代表此意寻呼是一次正常的寻呼，一种是IMSI，表明本次寻呼是一次异常寻呼，用于网络侧的错误恢复，此种情况下UE

                         需要重新做一次附着(Attach)流程。

                   (2)实际上Paging中的S-TMSI是在UE Attach request 中带的，如果Paging中的S-TMSI和UE发送的Attach request中的S-TMSI一致，则认为该寻呼是对本UE的寻呼。

                   (3) S-TMSI由mme code(1个字节) + M-TMSI(4个字节)组成。

                   (4) IMSI有MCC+MNC+MSIN组成

2017Jan 9  08:04:00.002 [CA]  0xB0ED  LTE NAS EMM Plain OTA Outgoing Message -- Attach request Msg

prot_disc= 7 (0x7) (EPS mobility management messages)

msg_type= 65 (0x41) (Attach request)

lte_emm_msg

 emm_attach_request

   tsc = 0 (0x0) (cached sec context)

   nas_key_set_id= 0 (0x0)

   att_type= 2 (0x2) (combined EPS/IMSI attach)

   eps_mob_id

     id_type = 6 (0x6) (GUTI)

     odd_even_ind = 0 (0x0)

     Guti_1111 = 15(0xf)

     mcc_1 = 0 (0x0)

     mcc_2 = 0 (0x0)

     mcc_3 = 1 (0x1)

     mnc_3 = 15 (0xf)

     mnc_1 = 0 (0x0)

     mnc_2 = 1 (0x1)

     MME_group_id = 32769 (0x8001)

     MME_code = 1 (0x1)

     m_tmsi = 3258209912 (0xc2345678)

 

【问题2】如果Paging中Paging ID是IMSI，请问eNB又是如何得到的呢？

【答】UE在初始接入的时候，UE会在attach request里携带IMSI.??

【问题3】RRC connection request里的原因是mt-Access,这是什么意思，都有哪些建立原因？

【答】

 

 

 

上一篇：pch有以下几个作用

下一篇：UIVIEW的各个属性详解

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