EP1079643A1
Expired / Lapsed
EP
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Improved GTP header
Assignee: Nokia of America Corp
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Filing: 1999-08-23
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Granted: —
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Expires: 2019-08-23
Abstract
Abstract There is disclosed a GPRS tunnelling protocol header having an optional sequence number field, and including a sequence field to indicate whether the sequence number field is present in the header. A UMTS GPRS tunnelling protocol header comprises, in sequence: a version field; a payload type field; a sequence filed; a message type filed; a length field; a flow label field; and an optional sequence number field, wherein the sequence field indicates whether the optional sequence number field is present in the header.
Inventors
- 👤 Alessio Casati
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 20:06
CPC Classifications
H; H04; H04L; H04L69/00; H04L69/16; H04L69/161; H04L2212/00; H04L69/22; H04W; H04W80/00; H04W80/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
28 words
A GPRS tunnelling protocol header having an optional sequence number
field, and including a sequence field to indicate whether the sequence number
field is present in the header.
Claim 2
Dependent Claim
17 words
The protocol header of claim 1 wherein the size of the sequence number field
is two octets.
Claim 3
Dependent Claim
21 words
The protocol header of claim 1 or claim 2 wherein with the sequence bit set
the header size is ten octets.
Claim 4
Dependent Claim
22 words
The protocol header of claim 1 or claim 2 wherein with the sequence bit not
set the header size is eight octets.
Claim 5
Dependent Claim
17 words
The protocol header of any one of claims 1 to 4 further including a flow label
field.
Claim 6
Dependent Claim
17 words
The protocol header of claim 5 wherein the size of the flow label field is four
octets.
Claim 7
Dependent Claim
29 words
The protocol header of any one of claims 1 to 6 for use in a UMTS system,
wherein the protocol header does not include a logical link control field.
Claim 8
Dependent Claim
21 words
The protocol header of claim 7 wherein the protocol header does not include a
logical link control frame number (LFN) field.
Claim 9
Dependent Claim
23 words
The protocol header of any one of claims 1 to 8 wherein the protocol header
does not include a tunnel identifier (TID) field.
Claim 10
Dependent Claim
17 words
The protocol header of any one of claims 1 to 9 further including a payload
type field.
Claim 11
Dependent Claim
17 words
The protocol header of any one of claims 1 to 10 wherein there are no spare
octets.
Claim 12
Dependent Claim
52 words
A UMTS GPRS tunnelling protocol header comprising, in sequence: a version
field; a payload type field; a sequence filed; a message type filed; a length
field; a flow label field; and an optional sequence number field, wherein the
sequence field indicates whether the optional sequence number field is
present in the header.
Claim 13
Dependent Claim
58 words
The UMTS GPRS tunnelling protocol header of claim 12, wherein the version
field is 3 bits, the payload type field is 1 bit, the sequence field is 1 bit; the
message type field is one octet, the length field is two octets; the flow label
field is 4 octets; and the optional sequence number filed is 2 octets.
Claim 14
Dependent Claim
23 words
The UMTS GPRS tunnelling protocol of claim 13, further comprising a set of
4 spare bits in the first octet of the header.
References Cited (Backward Citations)
US5579316A
Cited
WO1996021984A2
Cited
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