Outline LTESmall cell I II APP III Dongle
- Slides: 90
Outline • • 實驗目的 實驗項目 實驗原理與預習 LTE-Small cell 架構 – I. 實驗環境 – II. 量測用APP – III. Dongle 測試 • 軟硬體需求 – I. 硬體 – II. 軟體 • 操作部分 – Stage I. Before Start – Stage II. Ethernet Settings – Stage III. Compiling Source Code • • I. MME Source code compiling II. Small cell Source code compiling – Stage IV. 開機流程 • • I. EPC�動 II. LTE-Small cell�動 – Stage V. Sim卡資訊設定 • Some Configuration • Wireshark Settings • Questions 2
實驗原理與預習 • EPC : Evolved Packet Core network – EPC主要包括MME(Mobility Management Entity)和SGW(Serving Gate Way) – S-GW主要負責的有終於用戶面數據包及用戶平面切換(User Plane) – MME主要負責的有非接入層信令的加密、完整性保護和安全控 制,並對空閒狀態下的UE進行移動性管理(Control Plane) 參考資料: http: //www. mscbsc. com/askpro/question 77689 5
Functional Split between EUTRAN & EPC 參考資料: ITRI LTE RRC software introduction p. 4 6
Radio Protocol Architecture User plane protocol stack Control - Plane protocol stack 參考資料: ITRI LTE RRC software introduction p. 5 7
LTE Interface for RRM 參考資料: ITRI LTE RRM software introduction p. 12 8
LTE-Small cell 實驗架構 9
II. 實驗量測用APP總結 RSRP RSRQ RSSI (1)Advanced Signal Status v v trace ping v MCC MNC CID IP 手機 資訊 v v v v v (2)Speed. Test (3)LTE Discovery v v v (4)Open. Signal v v v (5)Traceroute v v (6)訊號檢測器 v v v (7)Net. Monster v v v (8)Network Cell Info Mini v v v 傳輸 速率 v v 19
III. Dongle 測試 20
Traceroute in mac. OS 21
Ping in mac. OS 22
Traceroute in Ubuntu 14 23
Ping in Ubuntu 14 24
軟硬體需求 - 硬體 名稱 規格 數量 目的 EPC CPU : Intel i 7 -6500 U(2. 5 GHz) RAM : DDR 3(1600) 16 GB HDD : SATA 3 1 TB 1 �動 MME, S-GW, P-GW功能 2 一張連內部網路,一張連接外部網路 1 LTE基地台用來連接EPC 3 連接e. NB,必須支援Band 40 Ethernet Network Card e. NB UE Realtek RTL 8111/8168 PCIE TP-LINK UE 300 USB ITRI u. D-Cell TI 66 xx Series DSP/ARM core Support 20 MHz, TD-LTE Band 40 Cell Phone HTC Desire 728 * 2 Dongle Huawei E 3372 h-607 * 1 25
軟硬體需求 - 軟體 軟體名稱 版本 目的 Ubuntu 14 EPC使用 LTE L 2/L 3程式 Ltel 23 執行Small Cell 運作 Advanced Signal Status(APP) 1. 5. 7 網速測試,PING測試 Speed. Test(APP) 1. 0. 5. 1 網速測試,PING測試 LTE Discovery(APP) 4. 7 網速測試,PING測試 Open. Signal(APP) 5. 02 網速測試,PING測試 Traceroute(APP) 1. 1. 4 trace測試 訊號檢測器(APP) 1. 0. 5 網速測試,PING測試 Net. Monster(APP) 2. 1. 2 網速測試,PING測試 Network Cell Info Mini(APP) 1. 1 網速測試,PING測試 Wireshark 1. 10. 6 觀察協定 26
Stage I. Before Start. . 27
必要步驟 • 1. 為電腦安裝Ubuntu (版本 14/16皆可,英文語 言) (https: //www. ubuntutw. org/modules/tinyd 0/) • 2. 先將ITRI EPC資料夾中之所有檔案、資料夾 都放到家目錄(cd ~)底下 • 3. 更新 – sudo apt-get update • 4. 安裝ARM的compiler 1. sudo apt-get install gcc-arm-linux-gnueabihf 2. sudo tar -zxf nfq_inc_lib. tar. gz -C /usr/arm-linux-gnueabihf 28
Stage I. Check List 項目 內容 確認更新到最新 sudo apt-get update 確認ARM compiler有安裝 dpkg --get-selections | grep gcc-arm-linnuxgnueabihf 確認nfq_inc_lib. tar. gz有解壓 cd /usr/arm-linux-gnueabihf/include ls 縮至正確資料夾 是否具有: libmnl, libnetfilter_queue, libnfnetlink, internal. h cd /usr/arm-linux-gnueabihf/lib ls 是否具有: libmnl. la, libmnl. so, libmnl. so. 0, libmnl. so. 0. 1. 0, libnetfilter_queue. la, libnetfilter_queue. so, libnetfilter_queue. so. 1, libnetfilter_queue. so. 1. 3. 0, libnfnetlink. la, libnfnetlink. so, libnfnetlink. so. 0, libnfnetlink. so. 0. 2. 0 29
Stage II. Ethernet Settings 30
Stage III. Compile Source Code 36
Compiling Source Code – MME Source code compiling 37
step 3 • 按下enter後,make clean 完成。 40
step 4 • 之後在終端機輸入 make,開始編譯MME Source code 41
Compiling Source Code – Small cell source code compiling 43
step 1 • 開�一個新的終端機,並且輸入 cd enbd_v 2. 5. 160219/enbd來切換到 enbd_v 2. 5. 160219/enbd資料夾底下 44
step 2 • 輸入指令. /load_arm_file. sh �生 Small cell的 makefile(若. /不可,則用bash) 45
step 4 • 清除完成後,在終端機上輸入make nfq,開始編譯Small cell 的Source code 47
step 5 • 在編譯完成後,終端機會顯示最後一行(-l netfilter_queue –l mnl lnfnetlink) 48
step 6 • 成功後即會�生出 Small cell的RRM執行檔( enbd_nat),將此執行檔利用scp指令傳入 Small cell • scp enbd_nat root@10. 101. 131. 35: ~/agent_v 2. 5. 160219/ 49
Stage III. Check List 項目 內容 檢�是否有 compile成功 : mmed與 enbd_nat執行檔 cd mmed_v 2. 5. 160219/mmed ls cd enbd_v 2. 5. 160219/enbd ls 檢�是否可以 root進e. NB ssh root@10. 101. 131. 35 50
Stage IV. 開機流程 51
開機流程 LTE-Small cell�動 56
step 2 • 接著輸入cd agent_v 2. 5. 160219/切換 agent_v 2. 5. 160219目錄下,要執行寫好的shell script(. sh file),輸入. /run_enb_umac_only. sh� 動Small cell的PHY, MAC, RLC和PDCP功能 58
step 12 68
Stage IV. Check List 項目 內容 RRC視窗 STAT_OK訊息 RRM視窗 Cell 0 setup OK訊息 MME視窗 指令表信息 69
Stage V. Sim卡資訊設 定 70
Some configuration 74
Mmed_config • Ue_ip_address_base=10. 101. 131. 100 75
Run_nat. sh • iptables -A INPUT -i eth 0 -j ACCEPT • iptables -t nat -A POSTROUTING -s 10. 101. 131. 0/24 -o eth 1 -j MASQUERADE 76
Configure enbd (1/4) • #gateway_addres=10. 101. 131. 254 – Set gateway IP addressfor user data forwarding • e. NB_ID=8 – Set(serving) cell identity • PCI=8 • EARFCN=39150 – Set(serving) PCI(physical cell ID)&EARFCN(carrier frequency). Also, set additional EARFCN for inter -frequency measurement configuration(s) 77
Configure enbd (2/4) • rrc_reference. Signal. Pow er=-22 – Set e. NB (reference signal) RF TX Power • ex. radius=5 m area: -22 d. B; radius=20 area: 0 d. B 78
Configure enbd (3/4) • rrc_agc. Rx. Gain=8 – Set e. NB RF gain of the receiver’s input amplifier • s 1 ap_server_address=1 0. 101. 131. 254 – Set S 1 AP server-side IP (i. e. , MMED IP) 79
Configure enbd (4/4) • neigbor_config_file=enbd _nbr. csv – Provide file maintaining neighbor cell List 80
enbd_nbr. csv • enbd/ • IP address • X 2: Is X 2 connection enabled (Y, or N) • MCC: country code, part of PLMN ID (ex. 001) • MNC: network code, part of PLMN ID (ex. 01) • e. NB_ID: (unique) cell identity • EARFCN: carrier frequency (ex. 38850, 39150, 39450 @ Band 40) • PCI: (unique) Physical cell ID 81
Configure ltel 23 • Oam_rrc. cfg • Enable rrc_msg_debug. Set IP address and UDP port number for RRC message displayed in Wireshark. 82
Release • 當UE 連上Small cell 後,如果UE 在 30 秒內沒有上 下行User data 傳輸就會被Small cell 給released • connection. c – enbd_v 2. 5. 160219/src/connection • 關閉方法: 註解或移除 rrc_cell_conn_inactive_release(bc->conn); 83
Release – 修改程式 84
Wireshark Settings 85
Step 1 • sudo apt-get install wireshark • 開� wireshark來觀察LTE連線,在UE連線之前�動 可觀察到連線 過程。首先要設定 PDCP-LTE 選項。 • 1. 點選edit -> Preference ->Protocols 86
Step 2 • 2. 直接鍵入 PD 會幫你搜尋到 PDCP-LTE,接著把 “Try Heuristic LTE-PDCP over UDP framing” 選項打勾 • 3. 在filter ,輸入 lte_rrc&&!icmp,然後點選Apply 87
Questions 88
Reference • ITRI Small Cell 說明文件(from ITRI) 90
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