8.88 Signalling Priority Indication
29.2743GPP3GPP Evolved Packet System (EPS)Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C)Release 18Stage 3TS
The Signalling Priority Indication information element contains signalling priority indications received from the UE for a specific PDN connection.
The Signalling Priority Indication information element is coded as shown in figure 8.88-1.
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Bits |
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Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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1 |
Type = 157 (decimal) |
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2 to 3 |
Length = n |
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4 |
Spare |
Instance |
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5 |
Spare |
LAPI |
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6 to (n+4) |
These octet(s) is/are present only if explicitly specified |
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Figure 8.88-1: Signalling Priority Indication
The following bits within Octet 5 shall indicate:
– Bit 8 to 2 – Spare, for future use and set to zero.
– Bit 1 – LAPI (Low Access Priority Indication): This bit defines if the UE indicated low access priority when establishing the PDN connection. It shall be encoded as the Low Priority parameter of the Device Properties IE in 3GPP TS 24.008 [5]. The receiver shall assume the value "0" if the Signalling Priority Indication IE is applicable for a message but not included in that message by the sender. The low access priority indication may be included in charging records.