As already mentioned, connections are identified by a 16-bit CID. At SS initialisation, taking place at SS network entry, two pairs of management connections (uplink and downlink connections) are established between the SS and the BS, and a third pair of management connections may be optionally established. These three pairs of connections reflect the fact that there are three different levels of QoS for management traffic between an SS and the BS:
The basic connection is used by the BS MAC and SS MAC to exchange short, time-urgent MAC management messages. This connection has a Basic CID (see Table 7.1).
Type |
Message name |
Description |
Connection |
---|---|---|---|
0 |
UCD |
Uplink Channel Descriptor |
Broadcast |
1 |
DCD |
Downlink Channel Descripton |
Broadcast |
2 |
DL-MAP |
Downlink Access Definition |
Broadcast |
3 |
UL-MAP |
Uplink Access Definition |
Broadcast |
4 |
RNG-REQ |
Ranging Request |
Initial ranging or basic |
5 |
RNG-RSP |
Ranging Response |
Initial ranging or basic |
6 |
REG-REQ |
Registration Request |
Primary management |
7 |
REG-RSP |
Registration Response |
Primary management |
8 |
reserved | ||
9 |
PKM-REQ |
Privacy Key Management Request |
Primary management |
10 |
PKM-RSP |
Privacy Key Management Response |
Primary management |
11 |
DSA-REQ |
Dynamic Service Addition Request |
Primary management |
12 |
DSA-RSP |
Dynamic Service Addition Response |
Primary management |
13 |
DSA-ACK |
Dynamic Service Addition Acknowledge |
Primary management |
14 |
DSC-REQ |
Dynamic Service Change Request |
Primary management |
15 |
DSC-RSP |
Dynamic Service Change Response |
Primary management |
16 |
DSC-ACK |
Dynamic Service Addition Acknowledge |
Primary management |
17 |
DSD-REQ |
Dynamic Service Deletion Request |
Primary management |
18 |
DSD-RSP |
Dynamic Service Deletion Response |
Primary management |
19 |
reserved | ||
20 |
reserved | ||
21 |
MCA-REQ |
Multicast Assignment Request |
Primary management |
22 |
MCA-RSP |
Multicast Assignment Response |
Primary management |
23 |
DBPC-REQ |
Downlink Burst Profile Change Request |
Basic |
24 |
DBPC-RSP |
Downlink Burst Profile Change Response |
Basic |
25 |
RES-CMD |
Reset Command |
Busic |
26 |
SBC-REQ |
SS Basic Cupability Request |
Basic |
27 |
SBC-RSP |
SS Basic Capability Response |
Basic |
28 |
CLK-CMP |
SS network Clock Comparison |
Broadcast |
29 |
DREG-CMD |
De/Re-register Command |
Basic |
30 |
DSX-RVD |
DSx Received Message |
Primary management |
31 |
TFTP-CPLT |
Configuration File TFTP Complete Messate |
Primary management |
32 |
TFTP-RSP |
Configuration File TFTP Complete Response |
Primary management |
33 |
ARQ-Feedback |
Standalone ARQ Feedback |
Basic |
34 |
ARQ-Discard |
ARQ Discard message |
Basic |
35 |
ARQ-Reset |
ARQ Reset message |
Basic |
36 |
REP-REQ |
Channel measurement Report Request |
Basic |
37 |
REP-RSP |
Channel measurement Report Response |
Basic |
38 |
FPC |
Fast Power Control |
Broadcast |
39 |
MSH-NCFG |
Mesh Network Configuration |
Broadcast |
40 |
MSH-NENT |
Mesh Network Entry |
Basic |
41 |
MSH-DSCH |
Mesh Distributed Schedule |
Broadcast |
42 |
MSH-CSCH |
Mesh Centralised Schedule |
Broadcast |
43 |
MSH-CSCF |
Mesh Centralised Schedule Configuration |
Broadcast |
44 |
AAS-FBCK-REQ |
AAS Feedback Request |
Basic |
45 |
AAS-FBCK-RSP |
AAS Feedback Response |
Basic |
46 |
AAS-Beam_Select |
AAS Beam Select message |
Basic |
47 |
AAS-BEAM_REQ |
AAS Beam Request message |
Basic |
48 |
AAS-BEAM_RSP |
AAS Beam Response message |
Basic |
49 |
DREG-REQ |
SS De-registration Request message |
Basic |
50–255 |
reserved |
The primary management connection is used by the BS MAC and SS MAC to exchange longer, more delay-tolerant MAC management messages. This connection has a Primary Management CID (see Table 7.1). Table 8.5 and 8.6 list all of the 802.16-2004 and 802.16e MAC management messages. See Annex A for brief descriptions of each message. Tables 8.5 and 8.6, specify which MAC management messages are transferred on each of these two connections.
Type |
Message name |
Description |
Connection |
---|---|---|---|
50 |
MOB_SLP-REQ |
SLeep REQuest |
Basic |
51 |
MOB_SLP-RSP |
SLeep ReSPonse |
Basic |
52 |
MOB_TRF-IND |
TRaffic INDiication |
Broadcast |
53 |
MOB_NBR-ADV |
Neighbour ADVertisement |
Broadcast and primary management |
54 |
MOB_SCN-REQ |
SCanning interval allocation REQuest |
Basic |
55 |
MOB_SCN-RSP |
SCanning interval allocation ReSPonse |
Basic |
56 |
MOB_BSHO-REQBS |
HO REQuest |
Basic |
57 |
MOB_MSHO-REQ |
MS HO REQuest |
Basic |
58 |
MOB_BSHO-RSP |
BS HO Response |
Basic |
59 |
MOB_HO-IND |
HO INDication |
Basic |
60 |
MOB_SCN-REP |
Scanning result REPort |
Primary management |
61 |
MOB_PAG-ADV |
BS broadcast PAGing |
Broadcast |
62 |
MBS_MAP |
MBSMA |
MA |
63 |
PMC_REQ |
Power control Mode Change REQuest |
Basic |
64 |
PMC_RSP |
Power control Mode Change Response |
Basic |
65 |
PRC-LT-CTRL |
Set-up/tear-down of Long-Term MIMO precoding |
Basic |
66 |
MOB_ASC-REP |
Association result REPort |
Primary management |
67-255 |
reserved |
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, as mentioned later in Chapter 11 (see also Section 5.2.6 of the standard [I] for IP CS PDU formats). Hence, secondary management messages are not MAC mannagement messages. Use of the secondary management connection is required only for managed SSs.
An SS supports a Basic CID, a Primary Management CID and zero or more Transport CIDs. A managed SS also supports a Secondary Management CID. Then the minimum value of the number of uplink CIDs supported is three for managed SSs and two for unmanaged SSs.
The CIDs for these connections are assigned in the initial ranging process, where the three CID values are assigned. The same CID value is assigned to both members (uplink and downlink) of each connection pair. The initial ranging process is described in Chapter 11.