ETSI SMG3 WPA / 3GPP TSG CN WG1	Tdoc N1-99588
Sophia Antipolis, France 
01-04 June, 1999

CHANGE REQUEST No :	A582r5	Please see embedded help file at the bottom of this
page for instructions on how to fill in this form correctly.	
	
Technical Specification GSM	04.08	Version:	6.3.0		
	
Submitted to SMG		for approval		Without presentation ("non-strategic")			
list SMG plenary meeting no. here 	for information		with presentation ("strategic")			

PT SMG CR cover form is available from: http://docbox.etsi.org/tech-org/smg/Document/smg/tools/CR_form/crf28_1.zip	

Proposed change affects:	SIM		ME	x	Network	x	
(at least one should be marked with an X)

Work item:	GPRS, EDGE	

Source:	Ericsson, Nokia	Date: 	1999-06-03	

Subject:	MS Radio Access Capability IE	

Category: 	F	Correction	x	Release: 	Phase 2		
	A	Corresponds to a correction in an earlier release			Release 96		
(one category 	B	Addition of feature			Release 97	x	
and one release 	C	Functional modification of feature			Release 98		
only shall be 	D	Editorial modification			Release 99		
marked with an X)						

Reason for 
change:
	Clarification of MS Radio Access Capability IE, including defining a minimum and maximum length. The maximum length is based on the assumption that a Release 97 mobile will only ever indicate a maximum of 2 Access Technology Types (900 or E band or R band and 1800)

Clauses affected:	9.4.1, 9.4.14, 10.5.5.12a	

Other specs	Other releases of same spec	x	  List of CRs:		
affected:	Other core specifications		  List of CRs:		
	MS test specifications / TBRs		  List of CRs:		
	BSS test specifications		  List of CRs:		
	O&M specifications		  List of CRs:		

Other 
comments:	- Future expansions are enabled
- GSM Revision level is deleted as it is not needed.

9.4.1	Attach request
This message is sent by the MS to the network in order to perform a GPRS or combined GPRS attach. See table 9.4.1/GSM 04.08.
Message type:	ATTACH REQUEST
Significance:		dual
Direction:			MS to network
Table 9.4.1/GSM 04.08: ATTACH REQUEST message content
IEI	Information Element	Type/Reference	Presence	Format	Length	
	Protocol discriminator	Protocol discriminator
10.2	M	V	1/2	
	Skip indicator	Skip indicator
10.3.1	M	V	½	
	Attach request message identity	Message type
10.4	M	V	1	
	MS network capability	MS network capability
10.5.5.12	M	LV	2	
	Attach type	Attach type
10.5.5.2	M	V	½	
	GPRS ciphering key sequence number	Ciphering key sequence number 
10.5.1.2	M	V	½	
	DRX parameter	DRX parameter
10.5.5.6	M	V	2	
	P-TMSI or IMSI	Mobile station identity
10.5.7.14	M	LV	6 - 10	
20	Old routing area identification	Routing area identification
10.5.5.15	M	V	6	
24	MS Radio Access capability	MS RA capability
10.5.5.12a	M	LV	  6 – 14	
19	Old P-TMSI signature	P-TMSI signature
10.5.5.8	O	TV	4	
17	Requested READY timer
value	GPRS Timer
10.5.7.3	O	TV	2	
9.4.1.1	Old P-TMSI signature
This IE is included if a valid P-TMSI and P-TMSI signature are stored in the MS.

9.4.1.2	Requested READY timer value
This IE may be included if the MS wants to indicate a preferred value for the READY timer.

9.4.14	Routing area update request
This message is sent by the MS to the network either to request an update of its location file or to request an IMSI attach for non-GPRS services. See table 9.4.14/GSM 04.08.
Message type:	ROUTING AREA UPDATE REQUEST
Significance:		dual
Direction:			MS to network
Table 9.4.14/GSM 04.08: ROUTING AREA UPDATE REQUEST message content
IEI	Information Element	Type/Reference	Presence	Format	Length	
	Protocol discriminator	Protocol discriminator
10.2	M	V	1/2	
	Skip indicator	Skip indicator
10.3.1	M	V	1/2	
	Routing area update request message identity	Message type
10.4	M	V	1	
	Update type	Update type
10.5.5.18	M	V	1/2	
	GPRS ciphering key sequence number	Ciphering key sequence number 
10.5.1.2	M	V	1/2	
	Old routing area identification	Routing area identification
10.5.5.15	M	V	6	
24	MS Radio Access capability	MS RA capability
10.5.5.12a	         M	      LV	   6 - 14	
19	Old P-TMSI signature	P-TMSI signature
10.5.5.8	O	TV	4	
17	Requested READY timer value	GPRS Timer
10.5.7.3	O	TV	2	
27	DRX parameter	DRX parameter
10.5.5.6	O	TV	3	
9.4.14.1	Old P-TMSI signature
This IE is included by the MS if it was received from the network in an ATTACH ACCEPT or ROUTING AREA UPDATE ACCEPT message.
9.4.14.2	Requested READY timer value
This IE may be included if the MS wants to indicate a preferred value for the READY timer.
9.4.14.3	DRX parameter
This IE may be included if the MS wants to indicate new DRX parameters.

10.5.5.12a	MS Radio Access capability
The purpose of the MS RA capability information element is to provide the radio part of the network with information concerning radio aspects of the mobile station. The contents might affect the manner in which the network handles the operation of the mobile station.  
The MS RA capability is a type 4 information element, with a minimum length of 6 octets and a maximum length of 14 octets.The value part of a MS RA capability information element is coded a shown table 10.5.146/GSM 04.08. 
-	SEMANTIC RULE : Among the three Access Type Technologies GSM 900-P, GSM 900-E and GSM 900-R only one shall be  present. 
-	Error handling : If a received Access Technology Type is unknown to the receiver, it shall ignore all the corresponding fields;
-	If within a known Access Technology Type a receiver recognizes an unknown field it shall ignore it.
-	See more details about error handling of MS radio access capability in TS GSM 08.18. 
Table 10.5.146/GSM 04.08 : Mobile Station Radio Access Capability Information Element
< MS Radio Access capability IE > ::=
<MS Radio Access capability IEI :  00100100 >
<Length of MS RA capability: <octet>> 	-- length in octets of MS RA capability value part and spare bits 
<MS RA capability  value part : < MS RA capability  value part struct >>
<spare bit>**; -- may be used for future enhancements

<MS RA capability  value part struct >::=  --recursive structure allows any number of Access technologies
< Access Technology Type: bit (4) >
< Access capabilities : <Access capabilities struct> >
{ 0 | 1 <MS RA capability  value part struct> } ;

< Access capabilities struct > ::=
	< Length : bit (7) > -- length in bits of Content and spare bits
	<Access capabilities : <Content>> 
	<spare bit>** ; -- expands to the indicated length
			  -- may be used for future enhancements

< Content > ::=
	< RF Power Capability : bit (3) >
	{ 0 | 1 <A5 bits : <A5 bits> > } -- zero means that the same values apply for parameters as in the immediately preceeding Access capabilities field within this IE
-- The presence of the A5 bits is mandatory in the 1st Access capabilies struct within this IE.
	< ES IND : bit >
	< PS : bit >
	< VGCS : bit >
	< VBS : bit >
	{ 0 | 1 < Multislot capability : Multislot capability struct > } ;  -- zero means that the same values apply for multislot parameters as in the immediately preceeding Access capabilities field within this IE.
	-- The presence of the Multislot capability struct is mandatory in the 1st Access capabilies struct within this IE.

< Multislot capability struct > ::=
	{ 0 | 1 < HSCSD multislot class : bit (5) > }
	{ 0 | 1 < GPRS multislot class : bit (5) > < GPRS Extended Dynamic Allocation Capability : bit > }
	{ 0 | 1 < SMS_VALUE : bit (4)  > < SM_VALUE : bit (4)  > } ;

<A5 bits> ::= < A5/1 : bit> <A5/2 : bit> <A5/3 : bit> <A5/4 : bit> <A5/5 : bit> <A5/6 : bit> <A5/7 : bit>; -- bits for circuit mode ciphering algorithms

Table 10.5.146/GSM 04.08 (concluded): Mobile Station Radio Access Capability Information Element
Access Technology Type
This field indicates the access technology type to be associated with the following access capabilities.

Bits
4 3 2 1
0 0 0 0 	GSM P
0 0 0 1 	GSM E  --note that GSM E covers GSM P
0 0 1 0 	GSM R  --note that GSM R covers GSM E and GSM P
0 0 1 1 	GSM 1800
All other values are treated as unknown by the receiver.

RF Power Capability
This field is coded as radio capability in Classmark 3 for the indicated band: it contains the binary coding of he power class associated (see GSM 05.05 paragraph 4.1 output power and paragraph 4.1.1 Mobile Station). 

A5/1 
0	encryption algorithm A5/1 not available
1	encryption algorithm A5/1 available
A5/2 
0	encryption algorithm A5/2 not available
1	encryption algorithm A5/2 available
A5/3 
0	encryption algorithm A5/3 not available
1	encryption algorithm A5/3 available
A5/4 
0	encryption algorithm A5/4 not available
1	encryption algorithm A5/4 available
A5/5 
0	encryption algorithm A5/5 not available
1	encryption algorithm A5/5 available
A5/6 
0	encryption algorithm A5/6 not available
1	encryption algorithm A5/6 available
A5/7 
0	encryption algorithm A5/7 not available
1	encryption algorithm A5/7 available

. 

ES IND – (Controlled early Classmark Sending)
0	"controlled early Classmark Sending" option is not implemented 
1	"controlled early Classmark Sending" option is  implemented

PS – (Pseudo Synchronisation)
0 	PS capability not present
1	PS capability present 

VGCS – (Voice Group Call Service)
0 	no VGCS capability or no notifications wanted
1	VGCS capability and notifications wanted

VBS – (Voice Broadcast Service)
0 	no VBS capability or no notifications wanted
1	VBS capability and notifications wanted

HSCSD Multi Slot Class 
The Multi Slot Class field is coded as the binary representation of the multislot class defined in TS GSM 05.02.
Range 1 to 18, all other values are reserved.
GPRS Multi Slot Class
The GPRS Multi Slot Class field is coded as the binary representation of the multislot class defined in TS GSM 05.02.

GPRS Extended Dynamic Allocation Capability
0     Extended Dynamic Allocation Capability for GPRS is not implemented
1     Extended Dynamic Allocation Capability for GPRS is implemented

SMS_VALUE (Switch-Measure-Switch) (4 bit field)
The SMS field indicates the time needed for the mobile station to switch from one radio channel to another, perform a neighbor cell power measurement, and the switch from that radio channel to another radio channel.
Bits
4 3 2 1
0 0 0 0		1/8 timeslot (~72 microseconds)
0 0 0 1		2/8 timeslot (~144 microseconds)
0 0 1 0		3/8 timeslot (~216 microseconds)
 . . .
1 1 1 1		16/8 timeslot (~1154 microseconds)
(SM_VALUE) Switch-Measure  (4 bit field)
The SM field indicates the time needed for the mobile station to switch from one radio channel to another and perform a neighbor cell power measurement.
Bits
4 3 2 1
0 0 0 0		1/8 timeslot (~72 microseconds)
0 0 0 1		2/8 timeslot (~144 microseconds)
0 0 1 0		3/8 timeslot (~216 microseconds)
 . . .
1 1 1 1		16/8 timeslot (~1154 microseconds)