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问题答案 ( 3 条 )
The purpose of the EPS update type information element is to specify the area the updating procedure is associated with.
具体类型如下:
TA updating
combined TA/LA updating
combined TA/LA updating with IMSI attach
periodic updating
具体类型如下:
TA updating
combined TA/LA updating
combined TA/LA updating with IMSI attach
periodic updating
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EPS update type value (octet 1, bit 1 to 3)
Bits
3 2 1
0 0 0 TA updating
0 0 1 combined TA/LA updating
0 1 0 combined TA/LA updating with IMSI attach
0 1 1 periodic updating
1 0 0 unused; shall be interpreted as "TA updating", if received by the network.
1 0 1 unused; shall be interpreted as "TA updating", if received by the network.
All other values are reserved.
"Active" flag (octet 1, bit 4)
Bit
4
0 No bearer establishment requested
1 Bearer establishment requested
Bits
3 2 1
0 0 0 TA updating
0 0 1 combined TA/LA updating
0 1 0 combined TA/LA updating with IMSI attach
0 1 1 periodic updating
1 0 0 unused; shall be interpreted as "TA updating", if received by the network.
1 0 1 unused; shall be interpreted as "TA updating", if received by the network.
All other values are reserved.
"Active" flag (octet 1, bit 4)
Bit
4
0 No bearer establishment requested
1 Bearer establishment requested
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