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lte網路註冊流程（3）

阿新 • • 發佈：2021-11-25

lte網路註冊流程（3）

本文介紹下下lte網路註冊的附著和建立預設承載的過程之中訊息分析.

1.attach request
訊息中主要包括：
EPS attach type 資料業務附著型別
EPS Mobile identity 終端使用者標識（IMSI or GUTI）
UE Network Capbility 終端支援哪些加密和完整性保護演算法
Tracking Area Identity 最後訪問跟蹤區TA
DRX Parameter 不連續接受配置
voice domain preference and UE’S Usage setting 語音業務引數
注意：建立預設承載的請求也在其中，這裡就是lte中的又一大特色，一條rrc信令上搭載兩條nas訊息。

下面為一個訊息具體示例

  1. 22:52:12.665 [0xB0ED] LTE NAS EMM Plain OTA Outgoing Message
  2. pkt_version = 1 (0x1)
  3. rel_number = 9 (0x9)
  4. rel_version_major = 5 (0x5)
  5. rel_version_minor = 0 (0x0)
  6. security_header_or_skip_ind = 0 (0x0)
  7. prot_disc = 7 (0x7) (EPS mobility management messages)
  8. msg_type = 65 (0x41) (Attach request)
  9. lte_emm_msg
  10. emm_attach_request
  11. tsc = 0 (0x0) (cached sec context)
  12. nas_key_set_id = 3 (0x3)
  13. att_type = 2 (0x2) (combined EPS/IMSI attach) //附著型別
  14. eps_mob_id //終端使用者標識
  15. id_type = 6 (0x6) (GUTI) //GUTI
  16. odd_even_ind = 0 (0x0)
  17. Guti_1111 = 15 (0xf)
  18. mcc_1 = 3 (0x3) //MCC MNC
  19. mcc_2 = 1 (0x1)
  20. mcc_3 = 1 (0x1)
  21. mnc_3 = 0 (0x0)
  22. mnc_1 = 4 (0x4)
  23. mnc_2 = 8 (0x8)
  24. MME_group_id = 0 (0x0)
  25. MME_code = 0 (0x0)
  26. m_tmsi = 0 (0x0)
  27. ue_netwk_cap //終端支援哪些加密和完整性保護演算法
  28. EEA0 = 1 (0x1) //lte加密演算法支援能力
  29. EEA1_128 = 1 (0x1)
  30. EEA2_128 = 1 (0x1)
  31. EEA3_128 = 1 (0x1)
  32. EEA4 = 0 (0x0)
  33. EEA5 = 0 (0x0)
  34. EEA6 = 0 (0x0)
  35. EEA7 = 0 (0x0)
  36. EIA0 = 0 (0x0) //lte完整性保護演算法支援能力
  37. EIA1_128 = 1 (0x1)
  38. EIA2_128 = 1 (0x1)
  39. EIA3_128 = 1 (0x1)
  40. EIA4 = 0 (0x0)
  41. EIA5 = 0 (0x0)
  42. EIA6 = 0 (0x0)
  43. EIA7 = 0 (0x0)
  44. oct5_incl = 1 (0x1)
  45. UEA0 = 1 (0x1) //3g加密演算法支援能力
  46. UEA1 = 1 (0x1)
  47. UEA2 = 0 (0x0)
  48. UEA3 = 0 (0x0)
  49. UEA4 = 0 (0x0)
  50. UEA5 = 0 (0x0)
  51. UEA6 = 0 (0x0)
  52. UEA7 = 0 (0x0)
  53. oct6_incl = 1 (0x1)
  54. UCS2 = 0 (0x0)
  55. UIA1 = 1 (0x1) //3G完整性保護演算法的支援能力
  56. UIA2 = 0 (0x0)
  57. UIA3 = 0 (0x0)
  58. UIA4 = 0 (0x0)
  59. UIA5 = 0 (0x0)
  60. UIA6 = 0 (0x0)
  61. UIA7 = 0 (0x0)
  62. oct7_incl = 1 (0x1)
  63. ProSedd = 0 (0x0)
  64. ProSe = 0 (0x0)
  65. H_245_ASH = 0 (0x0)
  66. ACC_CSFB = 1 (0x1)
  67. LPP = 1 (0x1)
  68. LCS = 0 (0x0)
  69. vcc_1xsr = 0 (0x0)
  70. NF = 1 (0x1)
  71. oct8_incl = 0 (0x0)
  72. oct9_incl = 0 (0x0)
  73. oct10_incl = 0 (0x0)
  74. oct11_incl = 0 (0x0)
  75. oct12_incl = 0 (0x0)
  76. oct13_incl = 0 (0x0)
  77. oct14_incl = 0 (0x0)
  78. oct15_incl = 0 (0x0)
  79. esm_msg_container //**預設承載
  80. eps_bearer_id_or_skip_id = 0 (0x0)
  81. prot_disc = 2 (0x2) (EPS session management messages)
  82. trans_id = 1 (0x1)
  83. msg_type = 208 (0xd0) (PDN connectivity request) //**預設承載請求
  84. lte_esm_msg
  85. pdn_connectivity_req
  86. pdn_type = 3 (0x3) (Ipv4v6) //PDN 型別
  87. req_type = 1 (0x1) (initial request) //請求型別
  88. info_trans_flag_incl = 1 (0x1)
  89. esm_info_trans_flag = 1 (0x1)
  90. access_pt_name_incl = 0 (0x0)
  91. prot_config_incl = 1 (0x1)
  92. prot_config
  93. ext = 1 (0x1)
  94. conf_prot = 0 (0x0)
  95. num_recs = 3 (0x3)
  96. sm_prot[0]
  97. protocol_id = 32801 (0x8021) (IPCP)
  98. prot_len = 16 (0x10)
  99. ipcp_prot
  100. ipcp_prot_id = 1 (0x1) (CONF_REQ)
  101. identifier = 0 (0x0)
  102. rfc1332_conf_req
  103. num_options = 2 (0x2)
  104. conf_options[0]
  105. type = 129 (0x81)
  106. rfc1877_primary_dns_server_add
  107. length = 6 (0x6)
  108. ip_addr = 0 (0x0) (0.0.0.0)
  109. conf_options[1]
  110. type = 131 (0x83)
  111. rfc1877_sec_dns_server_add
  112. length = 6 (0x6)
  113. ip_addr = 0 (0x0) (0.0.0.0)
  114. sm_prot[1]
  115. protocol_id = 13 (0xd) (DNS Server IPv4 Address Requestt)
  116. prot_len = 0 (0x0)
  117. sm_prot[2]
  118. protocol_id = 3 (0x3) (DNS Server IPv6 Addr Req)
  119. prot_len = 0 (0x0)
  120. num_recs2 = 6 (0x6)
  121. sm_container[0]
  122. container_id = 65280 (0xff00) (unknown)
  123. container_len = 3 (0x3)
  124. container_contents[0] = 19 (0x13)
  125. container_contents[1] = 1 (0x1)
  126. container_contents[2] = 132 (0x84)
  127. sm_container[1]
  128. container_id = 1 (0x1) (P-CSCF IPv6 Address Request)
  129. container_len = 0 (0x0)
  130. sm_container[2]
  131. container_id = 12 (0xc) (P-CSCF IPv4 Address Request)
  132. container_len = 0 (0x0)
  133. sm_container[3]
  134. container_id = 10 (0xa) (IP address allocation via NAS signalling)
  135. container_len = 0 (0x0)
  136. sm_container[4]
  137. container_id = 5 (0x5) (NWK Req Bearer Control indicator)
  138. container_len = 0 (0x0)
  139. sm_container[5]
  140. container_id = 16 (0x10) (Ipv4 Link MTU Request)
  141. container_len = 0 (0x0)
  142. dev_properties_incl = 0 (0x0)
  143. nbifom_incl = 0 (0x0)
  144. header_compression_config_inclu = 0 (0x0)
  145. ext_prot_config_incl = 0 (0x0)
  146. p_tmsi_sig_incl = 0 (0x0)
  147. add_guti_incl = 0 (0x0)
  148. reg_tai_incl = 1 (0x1)
  149. tracking_area_id
  150. mcc_mnc
  151. mcc_1 = 3 (0x3)
  152. mcc_2 = 1 (0x1)
  153. mcc_3 = 1 (0x1)
  154. mnc_3 = 0 (0x0)
  155. mnc_1 = 4 (0x4)
  156. mnc_2 = 8 (0x8)
  157. tracking_area_id = 11 (0xb)
  158. drx_params_incl = 1 (0x1)
  159. drx_params
  160. split_pg_cycle_code = 10 (0xa)
  161. cycle_len_coeff = 0 (0x0)
  162. split_on_ccch = 0 (0x0)
  163. non_drx_timer = 0 (0x0)
  164. ms_netwk_cap_incl = 1 (0x1)
  165. ms_netwk_cap
  166. length = 3 (0x3)
  167. r99 = 1 (0x1)
  168. GEA1 bits
  169. GEA/1 = 1 (0x1)
  170. SM capabilities via dedicated channels = 1 (0x1)
  171. SM capabilities via GPRS channels = 1 (0x1)
  172. UCS2 support = 0 (0x0)
  173. SS Screening Indicator = 1 (0x1)
  174. SoLSA Capability = 0 (0x0)
  175. Revision level indicator = 1 (0x1)
  176. PFC feature mode = 1 (0x1)
  177. Extended GEA bits
  178. GEA/2 = 1 (0x1)
  179. GEA/3 = 1 (0x1)
  180. GEA/4 = 0 (0x0)
  181. GEA/5 = 0 (0x0)
  182. GEA/6 = 0 (0x0)
  183. GEA/7 = 0 (0x0)
  184. LCS VA capability = 0 (0x0)
  185. PS inter-RAT HO from GERAN to UTRAN Iu mode capability = 0 (0x0)
  186. PS inter-RAT HO from GERAN to E-UTRAN S1 mode capability = 0 (0x0)
  187. EMM Combined procedures Capability = 1 (0x1)
  188. ISR support = 1 (0x1)
  189. SRVCC to GERAN/UTRAN capability = 1 (0x1)
  190. EPC capability = 1 (0x1)
  191. NF capability = 1 (0x1)
  192. spare_bits0_count = 0 (0x0)
  193. old_loc_area_id_incl = 0 (0x0)
  194. tmsi_stat_incl = 1 (0x1)
  195. tmsi_stat
  196. tmsi_flag = 0 (0x0)
  197. ms_class_mark2_incl = 1 (0x1)
  198. ms_class_mark2
  199. rev_level = 2 (0x2)
  200. es_ind = 0 (0x0)
  201. a5_1_alg_sup = 1 (0x1)
  202. rf_power_cap = 7 (0x7)
  203. pseudo_sync_cap = 0 (0x0)
  204. ss_screen_ind = 1 (0x1)
  205. sm_cap = 1 (0x1)
  206. vbs = 0 (0x0)
  207. vgcs = 0 (0x0)
  208. freq_cap = 0 (0x0)
  209. class_3_avail = 1 (0x1)
  210. lcsva_cap = 1 (0x1)
  211. ucs2 = 0 (0x0)
  212. solsa = 0 (0x0)
  213. cmsp = 1 (0x1)
  214. a5_3_alg_sup = 0 (0x0)
  215. a5_2_alg_sup = 0 (0x0)
  216. ms_class_mark3_incl = 0 (0x0)
  217. supp_codecs_incl = 1 (0x1)
  218. supp_codecs
  219. num_codecs = 2 (0x2)
  220. codecs[0]
  221. sysid = 4 (0x4)
  222. length = 2 (0x2)
  223. bitmap[0] = 96 (0x60)
  224. bitmap[1] = 4 (0x4)
  225. codecs[1]
  226. sysid = 0 (0x0)
  227. length = 2 (0x2)
  228. bitmap[0] = 31 (0x1f)
  229. bitmap[1] = 2 (0x2)
  230. add_update_type_incl = 0 (0x0)
  231. voice_domain_pref_incl = 1 (0x1)
  232. voice_domain_pref //語音業務相關引數
  233. length = 1 (0x1)
  234. UE_usage_setting = 1 (0x1) (Data centric)
  235. //volte 優先 cs語音
  236. voice_domain_pref_for_EUTRAN = 3 (0x3) (IMS PS Voice preferred, CS Voice as secondary)
  237. dev_properties_incl = 0 (0x0)
  238. old_guti_incl = 0 (0x0)
  239. ms_network_feature_incl = 1 (0x1)
  240. ms_network_feature_support
  241. ext_periodic_timers = 1 (0x1)
  242. network_resource_id_container_incl = 0 (0x0)
  243. t3324_incl = 0 (0x0)
  244. t3412_ext_incl = 0 (0x0)
  245. ext_drx_par_incl = 0 (0x0)
  246. ue_add_security_cap_incl = 0 (0x0)
  247. ue_status_incl = 0 (0x0)

2.獲取終端id

  1. //請求
  2. 22:52:12.897 [0xB0EC] LTE NAS EMM Plain OTA Incoming Message
  3. pkt_version = 1 (0x1)
  4. rel_number = 9 (0x9)
  5. rel_version_major = 5 (0x5)
  6. rel_version_minor = 0 (0x0)
  7. security_header_or_skip_ind = 0 (0x0)
  8. prot_disc = 7 (0x7) (EPS mobility management messages)
  9. msg_type = 85 (0x55) (Identity request) //獲取終端id請求
  10. lte_emm_msg
  11. emm_id_req
  12. identity_type_2
  13. type_of_identity = 1 (0x1) //終端id型別（imsi or guti）
  14. //響應
  15. 22:52:12.897 [0xB0ED] LTE NAS EMM Plain OTA Outgoing Message
  16. pkt_version = 1 (0x1)
  17. rel_number = 9 (0x9)
  18. rel_version_major = 5 (0x5)
  19. rel_version_minor = 0 (0x0)
  20. security_header_or_skip_ind = 0 (0x0)
  21. prot_disc = 7 (0x7) (EPS mobility management messages)
  22. msg_type = 86 (0x56) (Identity response)
  23. lte_emm_msg
  24. emm_id_resp
  25. mobile_identity
  26. id_type_check = 9 (0x9)
  27. ident_type = 1 (0x1)
  28. odd_even_ind = 1 (0x1)
  29. num_ident = 15 (0xf) //獲取到的Imsi 311480123456789
  30. ident[0] = 3 (0x3)
  31. ident[1] = 1 (0x1)
  32. ident[2] = 1 (0x1)
  33. ident[3] = 4 (0x4)
  34. ident[4] = 8 (0x8)
  35. ident[5] = 0 (0x0)
  36. ident[6] = 1 (0x1)
  37. ident[7] = 2 (0x2)
  38. ident[8] = 3 (0x3)
  39. ident[9] = 4 (0x4)
  40. ident[10] = 5 (0x5)
  41. ident[11] = 6 (0x6)
  42. ident[12] = 7 (0x7)
  43. ident[13] = 8 (0x8)
  44. ident[14] = 9 (0x9)

3.鑑權和安全通訊
這裡訊息就不列出來了
鑑權過程，是雙向鑑權，首先mme 給ue 轉發鑑權請求，ue收到鑑權訊息後會對網路進行鑑權，確認網路身份後，利用鑑權演算法獲取響應訊息返回給網路，網路在通過響應對ue進行鑑權，判斷使用者是否為合法使用者。

安全通訊其實就是ue和網路商量出一組加密演算法，作為相互傳遞訊息時使用的，最終建立起安全通訊。

4.接受附著
這裡注意裡終端使用者在成功附著的同時，也會發生位置更新。
下面接受attach accept訊息，主要包括下面內容：跟蹤區TA列表，MME為終端分配的guti標識，定時器餐宿，EPS網路配置引數。

  1. 22:52:13.806 [0xB0EC] LTE NAS EMM Plain OTA Incoming Message
  2. pkt_version = 1 (0x1)
  3. rel_number = 9 (0x9)
  4. rel_version_major = 5 (0x5)
  5. rel_version_minor = 0 (0x0)
  6. security_header_or_skip_ind = 0 (0x0)
  7. prot_disc = 7 (0x7) (EPS mobility management messages)
  8. msg_type = 66 (0x42) (Attach accept)
  9. lte_emm_msg
  10. emm_attach_accept
  11. attach_result = 1 (0x1) (EPS only) //附著結果
  12. t3412
  13. unit = 7 (0x7)
  14. timer_value = 1 (0x1)
  15. tai_list //TA列表
  16. num_tai_list = 1 (0x1)
  17. tai_list[0]
  18. list_type = 0 (0x0)
  19. num_element = 0 (0x0)
  20. mcc_mnc //網路的mcc mnc
  21. mcc_1 = 3 (0x3)
  22. mcc_2 = 1 (0x1)
  23. mcc_3 = 1 (0x1)
  24. mnc_3 = 0 (0x0)
  25. mnc_1 = 4 (0x4)
  26. mnc_2 = 8 (0x8)
  27. tac[0] = 11 (0xb)
  28. esm_msg_container
  29. eps_bearer_id_or_skip_id = 5 (0x5)
  30. prot_disc = 2 (0x2) (EPS session management messages)
  31. trans_id = 1 (0x1)
  32. msg_type = 193 (0xc1) (Activate default EPS bearer context request)
  33. lte_esm_msg
  34. act_def_eps_bearer_context_req
  35. eps_qos //qos服務質量
  36. qci = 5 (0x5) (QC5)
  37. oct4_incl = 0 (0x0)
  38. oct5_incl = 0 (0x0)
  39. oct6_incl = 0 (0x0)
  40. oct7_incl = 0 (0x0)
  41. oct8_incl = 0 (0x0)
  42. oct9_incl = 0 (0x0)
  43. oct10_incl = 0 (0x0)
  44. oct11_incl = 0 (0x0)
  45. oct12_incl = 0 (0x0)
  46. oct13_incl = 0 (0x0)
  47. oct14_incl = 0 (0x0)
  48. oct15_incl = 0 (0x0)
  49. access_point //接入方式，或者apn資訊 apn 為ims
  50. num_acc_pt_val = 4 (0x4)
  51. acc_pt_name_val[0] = 3 (0x3) (length)
  52. acc_pt_name_val[1] = 105 (0x69) (i)
  53. acc_pt_name_val[2] = 109 (0x6d) (m)
  54. acc_pt_name_val[3] = 115 (0x73) (s)
  55. pdn_addr //pdn 地址
  56. pdn_addr_len = 9 (0x9)
  57. pdn_type = 2 (0x2) (IPv6)
  58. ipv6_interface_id = 0x000000000000001 (0:0:0:1)
  59. trans_id_incl = 1 (0x1)
  60. trans_id
  61. length = 1 (0x1)
  62. ti_flag = 0 (0x0)
  63. ti_value = 0 (0x0)
  64. qos_incl = 0 (0x0)
  65. llc_sapi_incl = 0 (0x0)
  66. radio_priority_incl = 0 (0x0)
  67. pkt_flow_id_incl = 0 (0x0)
  68. apn_ambr_incl = 0 (0x0)
  69. esm_cause_incl = 1 (0x1)
  70. esm_cause
  71. esm_cause = 51 (0x33) (PDN type IPv6 only allowed)
  72. prot_config_incl = 1 (0x1)
  73. prot_config
  74. ext = 1 (0x1)
  75. conf_prot = 0 (0x0)
  76. num_recs = 0 (0x0)
  77. num_recs2 = 2 (0x2)
  78. sm_container[0]
  79. container_id = 3 (0x3) (DNS Server IPv6 Address)
  80. container_len = 16 (0x10)
  81. address = 0xfc01ababcdcd6fee0000000000000001 (fc01:abab:cdcd:6fee:0:0:0:1)
  82. sm_container[1]
  83. container_id = 1 (0x1) (P-CSCF IPV6 Address)
  84. container_len = 16 (0x10)
  85. address = 0xfc01ababcdcd6fee0000000000000001 (fc01:abab:cdcd:6fee:0:0:0:1)
  86. connectivity_type_incl = 0 (0x0)
  87. wlan_offload_acceptability_incl = 0 (0x0)
  88. nbifom_incl = 0 (0x0)
  89. header_compression_config_inclu = 0 (0x0)
  90. ctrl_plane_only_ind_incl = 0 (0x0)
  91. ext_prot_config_incl = 0 (0x0)
  92. serv_plmn_rate_ctrl_incl = 0 (0x0)
  93. ext_apn_ambr_incl = 0 (0x0)
  94. ext_eps_qos_incl = 0 (0x0)
  95. guti_incl = 1 (0x1)
  96. guti //guti標識
  97. id_type = 6 (0x6) (GUTI)
  98. odd_even_ind = 0 (0x0)
  99. Guti_1111 = 15 (0xf)
  100. mcc_1 = 3 (0x3)
  101. mcc_2 = 1 (0x1)
  102. mcc_3 = 1 (0x1)
  103. mnc_3 = 0 (0x0)
  104. mnc_1 = 4 (0x4)
  105. mnc_2 = 8 (0x8)
  106. MME_group_id = 0 (0x0)
  107. MME_code = 0 (0x0)
  108. m_tmsi = 0 (0x0)
  109. loc_id_incl = 0 (0x0)
  110. ms_id_incl = 0 (0x0)
  111. emm_cause_incl = 1 (0x1)
  112. emm_cause
  113. cause_value = 18 (0x12) (CS domain not available)
  114. T3402_incl = 0 (0x0)
  115. T3423_incl = 0 (0x0)
  116. equ_plmns_incl = 0 (0x0)
  117. emergnecy_num_list_incl = 0 (0x0)
  118. eps_netwk_feature_support_incl = 1 (0x1)
  119. eps_netwk_feature_support //網路特性描述
  120. length = 1 (0x1)
  121. CPCIoT = 0 (0x0)
  122. ERwoPDN = 0 (0x0)
  123. ESRPS = 0 (0x0)
  124. CS_LCS = 0 (0x0) (No info about support of loc service via cs is available)
  125. EPC_LCS = 0 (0x0) (Location Services via EPC not supported)
  126. EMC_BS = 1 (0x1) (Emergency bearer services in S1 Mode supported)
  127. IMSVoPS = 1 (0x1) (IMS Vo PS Session in S1 Mode supported)
  128. add_update_result_incl = 0 (0x0)
  129. t3412_ext_incl = 0 (0x0)
  130. t3324_incl = 0 (0x0)
  131. ext_drx_par_incl = 0 (0x0)
  132. dcn_id_incl = 0 (0x0)
  133. sms_srvc_status_incl = 0 (0x0)
  134. non_3gpp_access_emerg_num_policy_incl = 0 (0x0)
  135. t3448_incl = 0 (0x0)
  136. nwk_policy_incl = 0 (0x0)
  137. t3447_ext_incl = 0 (0x0)
  138. ext_emergency_number_incl = 0 (0x0)
  139. cipher_ket_data_incl = 0 (0x0)

5.建立預設承載
訊息中包括預設承載id，qos引數，分配的ip地址，dns地址，預設apn，來自hss的簽約資訊。

備註qci含義：
GBR
QCI=1: Example Services: Conversational voicemscbsc
　　QCI=2: Conversational Video (Live streaming)
　　QCI=3: Real Time Gaming
　　QCI=4: Non-conversational voice (buffered streaming)
Non-GBR
QCI=5: IMS signaling
　　QCI=6: Video (buffered streaming), TCP-based (e.g. www, email, chat, ftp, p2p file sharing, progressive video,etc)
　　QCI=7: Voice, Video (live streaming), interactive gaming
　　QCI=8: Video (buffered streaming), TCP-based (e.g. www, email, chat, ftp, p2p file sharing, progressive video,etc)
　　QCI=9: Video (buffered streaming), TCP-based (e.g. www, email, chat, ftp, p2p file sharing, progressive video,etc)

  1. 22:52:13.806 [0xB0E2] LTE NAS ESM Plain OTA Incoming Message
  2. pkt_version = 1 (0x1)
  3. rel_number = 9 (0x9)
  4. rel_version_major = 5 (0x5)
  5. rel_version_minor = 0 (0x0)
  6. eps_bearer_id_or_skip_id = 5 (0x5)
  7. prot_disc = 2 (0x2) (EPS session management messages)
  8. trans_id = 1 (0x1)
  9. msg_type = 193 (0xc1) (Activate default EPS bearer context request)
  10. lte_esm_msg
  11. act_def_eps_bearer_context_req
  12. eps_qos //qos引數
  13. qci = 5 (0x5) (QC5)
  14. oct4_incl = 0 (0x0)
  15. oct5_incl = 0 (0x0)
  16. oct6_incl = 0 (0x0)
  17. oct7_incl = 0 (0x0)
  18. oct8_incl = 0 (0x0)
  19. oct9_incl = 0 (0x0)
  20. oct10_incl = 0 (0x0)
  21. oct11_incl = 0 (0x0)
  22. oct12_incl = 0 (0x0)
  23. oct13_incl = 0 (0x0)
  24. oct14_incl = 0 (0x0)
  25. oct15_incl = 0 (0x0)
  26. access_point //接入apn ims
  27. num_acc_pt_val = 4 (0x4)
  28. acc_pt_name_val[0] = 3 (0x3) (length)
  29. acc_pt_name_val[1] = 105 (0x69) (i)
  30. acc_pt_name_val[2] = 109 (0x6d) (m)
  31. acc_pt_name_val[3] = 115 (0x73) (s)
  32. pdn_addr //分配的ip地址
  33. pdn_addr_len = 9 (0x9)
  34. pdn_type = 2 (0x2) (IPv6)
  35. ipv6_interface_id = 0x000000000000001 (0:0:0:1)
  36. trans_id_incl = 1 (0x1)
  37. trans_id
  38. length = 1 (0x1)
  39. ti_flag = 0 (0x0)
  40. ti_value = 0 (0x0)
  41. qos_incl = 0 (0x0)
  42. llc_sapi_incl = 0 (0x0)
  43. radio_priority_incl = 0 (0x0)
  44. pkt_flow_id_incl = 0 (0x0)
  45. apn_ambr_incl = 0 (0x0)
  46. esm_cause_incl = 1 (0x1)
  47. esm_cause
  48. esm_cause = 51 (0x33) (PDN type IPv6 only allowed)
  49. prot_config_incl = 1 (0x1)
  50. prot_config
  51. ext = 1 (0x1)
  52. conf_prot = 0 (0x0)
  53. num_recs = 0 (0x0)
  54. num_recs2 = 2 (0x2)
  55. sm_container[0]
  56. container_id = 3 (0x3) (DNS Server IPv6 Address)
  57. container_len = 16 (0x10)
  58. address = 0xfc01ababcdcd6fee0000000000000001 (fc01:abab:cdcd:6fee:0:0:0:1)
  59. sm_container[1]
  60. container_id = 1 (0x1) (P-CSCF IPV6 Address)
  61. container_len = 16 (0x10)
  62. address = 0xfc01ababcdcd6fee0000000000000001 (fc01:abab:cdcd:6fee:0:0:0:1)
  63. connectivity_type_incl = 0 (0x0)
  64. wlan_offload_acceptability_incl = 0 (0x0)
  65. nbifom_incl = 0 (0x0)
  66. header_compression_config_inclu = 0 (0x0)
  67. ctrl_plane_only_ind_incl = 0 (0x0)
  68. ext_prot_config_incl = 0 (0x0)
  69. serv_plmn_rate_ctrl_incl = 0 (0x0)
  70. ext_apn_ambr_incl = 0 (0x0)
  71. ext_eps_qos_incl = 0 (0x0)

最後終端給網路傳送一個完成附著的響應，attach complete 訊息中沒有攜帶任何具體資訊，可以理解為給Mme的禮貌性的迴應。

至此，關於lte註冊流程應該算是有個簡單的瞭解了。

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