[STDS-802-16-MOBILE] [Handoff] Location Update issue
Hi, all
We identified the following issue with location update in idle mode within
the Handover AdHoc.
The following issue is raised.
Basic assumption behind this issue are that
- The MSS does not need to perform all network entry procedure when it wants
to update his location only.
That is, MSS does not need to perform SBC/PKM/REG after the successful
location update.
- The network entity(e.g., BS ID or ASA ID) is required to indicate what
network entity stores
MSS's location information and security information in idle mode.
There are two approaches here.
1. RNG-REQ includes the action code for location update(2bits), HMAC
tuple(176bits), and Server ID(48bits, the server stores
the location information, idle mode authentication key, etc)
* Cons
This approach may cause a problem for the BS to assign a bandwidth to the
MSS when it sends RNG-REQ because the message size of RNG-REQ is varied on
multiple cases: initial ranging, periodic ranging, handover ranging, BW
request ranging, and even location update ranging.
* Pros
This approach uses the current RNG-REQ/RSP messages.
2, RNG-REQ includes the indication bit for location update purpose. New
management messages LU-REQ/RSP with HMAC tuple, Server ID.
* Cons
This approach is to make a new MAC management messages for location update.
New 1 bit in RNG-REQ is overhead even if it is not severe.
* Pros
This approach adopts the current initial ranging mechanism with 1 bit
indication of Location Update. There is no problem for the BS
to assign the bandwidth to the MSS when it sends the RNG-REQ.
Any comments?
BR,
YONG CHANG
Senior Engineer/Ph.D
Samsung Electronics Ltd.
Tel: +82-31-279-3621