CID

Initial Ranging: 0x0000

Basic CID: 1 - no of m (m is no of MS)
for short and very urgnet msgs like HO, RNG_REQ/RSP, SBC_REQ/RSP ARQ_RESET/.. etc.. BCID messages should not be fragmented or packed

Primary CID: m+1 - 2m (for longer and less urgent (delay tolerent) msgs)
REG_REQ/RSP, DSA_xxx etc...

Secondary CID: The secondary management connection is used by the BS and SS to transfer delay tolerant, standards-based messages. These standards are the Dynamic Host Configuraation Protocol (DHCP), Trivial File Transfer Protocol (TFTP), Simple Network Manageement Protocol (SNMP), etc. The secondary management messages are carried in IP datagrams

Transport CID (TCID): 2m+1 - 0xFEFE
for each direction UL/DL per service flow, 1 SFID will be associated for specific QOS requirement. so if there are active connections per MS, then there will be 8 SFIDs and CIDs in UL and 8 SFIDs and CIDs in DL will be allocated

Broadcast CID: 0xFFFF
DLMAP, ULMAP, DCD, UCD etc... MAC msg should not be fragmented on this CID