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The Radio Resource Control (RRC) protocol is used in UMTS, LTE and 5G on the Air interface. It is a layer 3 (Network Layer) protocol used between UE and Base Station. This protocol is specified by 3GPP in TS 25.331 [2] for UMTS, in TS 36.331 [3] for LTE and in TS 38.331 [4] for 5G New Radio. RRC messages are transported via the PDCP-Protocol.
Note that an MNC can be of two-digit form and three-digit form with leading zeros. It is administered by the respective national numbering plan administrator. [3] From PLMN assignments, it is apparent that such dualities of two-digit and three-digit MNCs with the same number value are avoided (see the list of mobile country codes and mobile network codes).
Yes, plans available with unlimited calls to 20 countries, unlimited int'l texts, int'l roaming [84] [86] [87]? Owned by China Telecom. China Telecom and parent company China Telecommunications Corporation are state-owned (by China). Dual-number activation: U.S. phone number and virtual Chinese local number. [84] China Unicom Cuniq US T-Mobile ...
In 2004 the FCC developed a new band plan where narrowband operations are provided in 806–816 and 851–861 MHz ranges while wideband operations are allowed in 817–824 MHz and 862–869 MHz separated from narrowband services by a 1 MHz wide guard band. [6] The wideband services part of the SMR band was called ESMR (Enhanced SMR).
The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. [ 1 ] In 1949, Oakland, CA, received the fifth regional dial switching center for Operator Toll Dialing in the nation, [ 2 ] which set the stage for ...
Country or territory Operator Bands Notes DSS n28 700 MHz n40 2.3 GHz n41 2.5 GHz n78 3.5 GHz n258 26 GHz Others Argentina Movistar []: 50 MHz (Oct 2024)[1] [81]Personal: n7: 20 MHz
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In June 2019, the Philippines became the first country in Southeast Asia to roll out a 5G broadband network after Globe Telecom commercially launched its 5G data plans to customers. [233] AT&T brings 5G service to consumers and businesses in December 2019 ahead of plans to offer 5G throughout the United States in the first half of 2020. [234 ...