OpenBSC

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19 participants
4282 discussions

osmo-trx packaging
by Holger Freyther 14 Mar '16

14 Mar '16

Dear Tom, I would like to move the debian/ directory from the fairwaves/master branch to master. Do you have objections of doing that or did you have a general look at the few commits that are in there? In terms of packaging the only issue I see is that -march=native is being used which is likely to completely disable SSEX support. Did you look at ifunc for GCC[1]? Would you be open to explore such[2] a solution or would even have time to try it? Is there a way to benchmark the effect easily? kind regards holger [1] https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#Common-F… [2] http://pasky.or.cz/dev/glibc/ifunc.c

1 0

test?
by Holger Freyther 12 Mar '16

12 Mar '16

virtual delivery and aliases?

1 1

[PATCH 1/2] Add SI2quater support to SI3
by msuraev＠sysmocom.de 12 Mar '16

12 Mar '16

From: Max <msuraev(a)sysmocom.de> Advertise SI2 quater presence and location (if available) using SI3 according to 3GPP TS 44.018 § 10.5.2.34 --- openbsc/include/openbsc/rest_octets.h | 3 ++- openbsc/src/libbsc/bsc_init.c | 1 + openbsc/src/libbsc/rest_octets.c | 7 +++++++ openbsc/src/libbsc/system_information.c | 8 +++++++- 4 files changed, 17 insertions(+), 2 deletions(-) diff --git a/openbsc/include/openbsc/rest_octets.h b/openbsc/include/openbsc/rest_octets.h index 963b010..9560b14 100644 --- a/openbsc/include/openbsc/rest_octets.h +++ b/openbsc/include/openbsc/rest_octets.h @@ -43,7 +43,8 @@ struct gsm48_si_ro_info { present:1; } scheduling; struct gsm48_si3_gprs_ind gprs_ind; - + /* SI 3 specific */ + uint8_t si2quater_indicator; /* SI 4 specific */ struct gsm48_lsa_params lsa_params; uint16_t cell_id; diff --git a/openbsc/src/libbsc/bsc_init.c b/openbsc/src/libbsc/bsc_init.c index 859d999..6557b41 100644 --- a/openbsc/src/libbsc/bsc_init.c +++ b/openbsc/src/libbsc/bsc_init.c @@ -140,6 +140,7 @@ int gsm_bts_trx_set_system_infos(struct gsm_bts_trx *trx) gen_si[n_si++] = SYSINFO_TYPE_2; gen_si[n_si++] = SYSINFO_TYPE_2bis; gen_si[n_si++] = SYSINFO_TYPE_2ter; + gen_si[n_si++] = SYSINFO_TYPE_2quater; gen_si[n_si++] = SYSINFO_TYPE_3; gen_si[n_si++] = SYSINFO_TYPE_4; diff --git a/openbsc/src/libbsc/rest_octets.c b/openbsc/src/libbsc/rest_octets.c index 4545794..fa35f21 100644 --- a/openbsc/src/libbsc/rest_octets.c +++ b/openbsc/src/libbsc/rest_octets.c @@ -129,6 +129,13 @@ int rest_octets_si3(uint8_t *data, const struct gsm48_si_ro_info *si3) /* GPRS Indicator */ append_gprs_ind(&bv, &si3->gprs_ind); + bitvec_set_bit(&bv, H); /* 3G Early Classmark Sending Restriction controlled by early_cm_ctrl above */ + + if (si3->si2quater_indicator) { + bitvec_set_bit(&bv, H); /* indicator struct present */ + bitvec_set_uint(&bv, 0, 1); /* message is sent on BCCH Norm */ + } + bitvec_spare_padding(&bv, (bv.data_len*8)-1); return bv.data_len; } diff --git a/openbsc/src/libbsc/system_information.c b/openbsc/src/libbsc/system_information.c index 1ee9d41..62ee306 100644 --- a/openbsc/src/libbsc/system_information.c +++ b/openbsc/src/libbsc/system_information.c @@ -510,6 +510,7 @@ static struct gsm48_si_ro_info si_info = { .ra_colour = 0, .present = 1, }, + .si2quater_indicator = 0, .lsa_params = { .present = 0, }, @@ -545,7 +546,12 @@ static int generate_si3(uint8_t *output, struct gsm_bts *bts) } else { si_info.si2ter_indicator = 0; } - + if ((bts->si_valid & (1 << SYSINFO_TYPE_2quater))) { + LOGP(DRR, LOGL_INFO, "SI 2quater is included.\n"); + si_info.si2quater_indicator = 1; + } else { + si_info.si2quater_indicator = 0; + } /* SI3 Rest Octets (10.5.2.34), containing CBQ, CELL_RESELECT_OFFSET, TEMPORARY_OFFSET, PENALTY_TIME Power Offset, 2ter Indicator, Early Classmark Sending, -- 2.7.2

1 1

[PATCH 1/3] Add helper function to convert numerical BSSGP PDU type to string
by msuraev＠sysmocom.de 12 Mar '16

12 Mar '16

From: Max <msuraev(a)sysmocom.de> --- include/osmocom/gprs/gprs_bssgp.h | 1 + src/gb/gprs_bssgp_util.c | 46 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 47 insertions(+) diff --git a/include/osmocom/gprs/gprs_bssgp.h b/include/osmocom/gprs/gprs_bssgp.h index c0b3f65..b70487c 100644 --- a/include/osmocom/gprs/gprs_bssgp.h +++ b/include/osmocom/gprs/gprs_bssgp.h @@ -14,6 +14,7 @@ extern struct gprs_ns_inst *bssgp_nsi; struct msgb *bssgp_msgb_alloc(void); struct msgb *bssgp_msgb_copy(const struct msgb *msg, const char *name); const char *bssgp_cause_str(enum gprs_bssgp_cause cause); +const char *bssgp_pdu_str(enum bssgp_pdu_type pdu); /* Transmit a simple response such as BLOCK/UNBLOCK/RESET ACK/NACK */ int bssgp_tx_simple_bvci(uint8_t pdu_type, uint16_t nsei, uint16_t bvci, uint16_t ns_bvci); diff --git a/src/gb/gprs_bssgp_util.c b/src/gb/gprs_bssgp_util.c index 19ae23a..6fff362 100644 --- a/src/gb/gprs_bssgp_util.c +++ b/src/gb/gprs_bssgp_util.c @@ -62,11 +62,57 @@ static const struct value_string bssgp_cause_strings[] = { { 0, NULL }, }; +static const struct value_string bssgp_pdu_strings[] = { + { BSSGP_PDUT_DL_UNITDATA, "DL-UNITDATA" }, + { BSSGP_PDUT_UL_UNITDATA, "UL-UNITDATA" }, + { BSSGP_PDUT_RA_CAPABILITY, "RA-CAPABILITY" }, + { BSSGP_PDUT_PTM_UNITDATA, "PTM-UNITDATA" }, + { BSSGP_PDUT_PAGING_PS, "PAGING-PS" }, + { BSSGP_PDUT_PAGING_CS, "PAGING-CS" }, + { BSSGP_PDUT_RA_CAPA_UDPATE, "RA-CAPABILITY-UPDATE" }, + { BSSGP_PDUT_RA_CAPA_UPDATE_ACK, "RA-CAPABILITY-UPDATE-ACK" }, + { BSSGP_PDUT_RADIO_STATUS, "RADIO-STATUS" }, + { BSSGP_PDUT_SUSPEND, "SUSPEND" }, + { BSSGP_PDUT_SUSPEND_ACK, "SUSPEND-ACK" }, + { BSSGP_PDUT_SUSPEND_NACK, "SUSPEND-NACK" }, + { BSSGP_PDUT_RESUME, "RESUME" }, + { BSSGP_PDUT_RESUME_ACK, "RESUME-ACK" }, + { BSSGP_PDUT_RESUME_NACK, "RESUME-NACK" }, + { BSSGP_PDUT_BVC_BLOCK, "BVC-BLOCK" }, + { BSSGP_PDUT_BVC_BLOCK_ACK, "BVC-BLOCK-ACK" }, + { BSSGP_PDUT_BVC_RESET, "BVC-RESET" }, + { BSSGP_PDUT_BVC_RESET_ACK, "BVC-RESET-ACK" }, + { BSSGP_PDUT_BVC_UNBLOCK, "BVC-UNBLOCK" }, + { BSSGP_PDUT_BVC_UNBLOCK_ACK, "BVC-UNBLOCK-ACK" }, + { BSSGP_PDUT_FLOW_CONTROL_BVC, "FLOW-CONTROL-BVC" }, + { BSSGP_PDUT_FLOW_CONTROL_BVC_ACK, "FLOW-CONTROL-BVC-ACK" }, + { BSSGP_PDUT_FLOW_CONTROL_MS, "FLOW-CONTROL-MS" }, + { BSSGP_PDUT_FLOW_CONTROL_MS_ACK, "FLOW-CONTROL-MS-ACK" }, + { BSSGP_PDUT_FLUSH_LL, "FLUSH-LL" }, + { BSSGP_PDUT_FLUSH_LL_ACK, "FLUSH-LL-ACK" }, + { BSSGP_PDUT_LLC_DISCARD, "LLC DISCARDED" }, + { BSSGP_PDUT_SGSN_INVOKE_TRACE, "SGSN-INVOKE-TRACE" }, + { BSSGP_PDUT_STATUS, "STATUS" }, + { BSSGP_PDUT_DOWNLOAD_BSS_PFC, "DOWNLOAD-BSS-PFC" }, + { BSSGP_PDUT_CREATE_BSS_PFC, "CREATE-BSS-PFC" }, + { BSSGP_PDUT_CREATE_BSS_PFC_ACK, "CREATE-BSS-PFC-ACK" }, + { BSSGP_PDUT_CREATE_BSS_PFC_NACK, "CREATE-BSS-PFC-NACK" }, + { BSSGP_PDUT_MODIFY_BSS_PFC, "MODIFY-BSS-PFC" }, + { BSSGP_PDUT_MODIFY_BSS_PFC_ACK, "MODIFY-BSS-PFC-ACK" }, + { BSSGP_PDUT_DELETE_BSS_PFC, "DELETE-BSS-PFC" }, + { BSSGP_PDUT_DELETE_BSS_PFC_ACK, "DELETE-BSS-PFC-ACK" }, + { 0, NULL }, +}; + const char *bssgp_cause_str(enum gprs_bssgp_cause cause) { return get_value_string(bssgp_cause_strings, cause); } +const char *bssgp_pdu_str(enum bssgp_pdu_type pdu) +{ + return get_value_string(bssgp_pdu_strings, pdu); +} struct msgb *bssgp_msgb_alloc(void) { -- 2.7.2

2 5

Silent-call
by robert 12 Mar '16

12 Mar '16

Hi, I would like to know what are the capabilities of the silent-call implemented in OpenBSC. When I try the command from VTY, I do not get any useful information from the target. Should it be like a normal call where I can listen to the called number but without having the target notified? Best regards, Robert,

3 3

[PATCH] Fix copy-paste issue
by msuraev＠sysmocom.de 12 Mar '16

12 Mar '16

From: Max <msuraev(a)sysmocom.de> This issue prevented scheduling of SI 2quater messages. --- src/common/sysinfo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/common/sysinfo.c b/src/common/sysinfo.c index e08ffca..f079199 100644 --- a/src/common/sysinfo.c +++ b/src/common/sysinfo.c @@ -82,7 +82,7 @@ uint8_t *bts_sysinfo_get(struct gsm_bts *bts, struct gsm_time *g_time) } if (BTS_HAS_SI(bts, SYSINFO_TYPE_2quater) && (BTS_HAS_SI(bts, SYSINFO_TYPE_2bis) || - BTS_HAS_SI(bts, SYSINFO_TYPE_2bis))) { + BTS_HAS_SI(bts, SYSINFO_TYPE_2ter))) { tc4_sub[tc4_cnt] = SYSINFO_TYPE_2quater; tc4_cnt += 1; } -- 2.7.2

2 1

[PATCH] Add support for SI2quater messages
by msuraev＠sysmocom.de 12 Mar '16

12 Mar '16

From: Max <msuraev(a)sysmocom.de> Add basic data structure for System information Type 2quater. --- include/osmocom/gsm/protocol/gsm_04_08.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/osmocom/gsm/protocol/gsm_04_08.h b/include/osmocom/gsm/protocol/gsm_04_08.h index 9fcdddc..eefaf2b 100644 --- a/include/osmocom/gsm/protocol/gsm_04_08.h +++ b/include/osmocom/gsm/protocol/gsm_04_08.h @@ -514,6 +514,12 @@ struct gsm48_system_information_type_2ter { uint8_t rest_octets[0]; } __attribute__ ((packed)); +/* Section 9.1.34a System information Type 2quater */ +struct gsm48_system_information_type_2quater { + struct gsm48_system_information_type_header header; + uint8_t rest_octets[0]; +} __attribute__ ((packed)); + /* Section 9.1.35 System information Type 3 */ struct gsm48_system_information_type_3 { struct gsm48_system_information_type_header header; @@ -792,6 +798,7 @@ struct gsm48_rr_status { #define GSM48_MT_RR_SYSINFO_2bis 0x02 #define GSM48_MT_RR_SYSINFO_2ter 0x03 +#define GSM48_MT_RR_SYSINFO_2quater 0x07 #define GSM48_MT_RR_SYSINFO_5bis 0x05 #define GSM48_MT_RR_SYSINFO_5ter 0x06 #define GSM48_MT_RR_SYSINFO_9 0x04 -- 2.7.2

2 1

[PATCH] fix confusing typo in constant (THAN -> THEN)
by Neels Hofmeyr 11 Mar '16

11 Mar '16

--- openbsc/include/openbsc/auth.h | 2 +- openbsc/src/libmsc/auth.c | 2 +- openbsc/src/libmsc/gsm_04_08.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/openbsc/include/openbsc/auth.h b/openbsc/include/openbsc/auth.h index 2364fb3..d41d141 100644 --- a/openbsc/include/openbsc/auth.h +++ b/openbsc/include/openbsc/auth.h @@ -6,7 +6,7 @@ struct gsm_subscriber; enum auth_action { AUTH_NOT_AVAIL = 0, /* No auth tuple available */ - AUTH_DO_AUTH_THAN_CIPH = 1, /* Firsth authenticate, then cipher */ + AUTH_DO_AUTH_THEN_CIPH = 1, /* Firsth authenticate, then cipher */ AUTH_DO_CIPH = 2, /* Only ciphering */ AUTH_DO_AUTH = 3, /* Only authentication, no ciphering */ }; diff --git a/openbsc/src/libmsc/auth.c b/openbsc/src/libmsc/auth.c index 0a2f59e..65a9b03 100644 --- a/openbsc/src/libmsc/auth.c +++ b/openbsc/src/libmsc/auth.c @@ -132,6 +132,6 @@ int auth_get_tuple_for_subscr(struct gsm_auth_tuple *atuple, db_sync_lastauthtuple_for_subscr(atuple, subscr); DEBUGP(DMM, "Need to do authentication and ciphering\n"); - return AUTH_DO_AUTH_THAN_CIPH; + return AUTH_DO_AUTH_THEN_CIPH; } diff --git a/openbsc/src/libmsc/gsm_04_08.c b/openbsc/src/libmsc/gsm_04_08.c index 9b903ee..8fcb6cf 100644 --- a/openbsc/src/libmsc/gsm_04_08.c +++ b/openbsc/src/libmsc/gsm_04_08.c @@ -192,7 +192,7 @@ int gsm48_secure_channel(struct gsm_subscriber_connection *conn, int key_seq, /* FIXME: Should start a timer for completion ... */ /* Then do whatever is needed ... */ - if (rc == AUTH_DO_AUTH_THAN_CIPH) { + if (rc == AUTH_DO_AUTH_THEN_CIPH) { /* Start authentication */ return gsm48_tx_mm_auth_req(conn, op->atuple.rand, op->atuple.key_seq); } else if (rc == AUTH_DO_CIPH) { -- 2.1.4

1 0

[PATCH 1/2] Add defines for MM and CC message type bitmasks
by Neels Hofmeyr 11 Mar '16

11 Mar '16

The bitmasks are 0xbf according to ETSI 3GPP TS 100 940 chapter 10.4 --- include/osmocom/gsm/protocol/gsm_04_08.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/osmocom/gsm/protocol/gsm_04_08.h b/include/osmocom/gsm/protocol/gsm_04_08.h index 9fcdddc..43571b9 100644 --- a/include/osmocom/gsm/protocol/gsm_04_08.h +++ b/include/osmocom/gsm/protocol/gsm_04_08.h @@ -820,6 +820,7 @@ struct gsm48_rr_status { #define GSM48_MT_RR_APP_INFO 0x38 /* Table 10.2/3GPP TS 04.08 */ +#define GSM48_MT_MM_MSG_TYPE_MASK 0xbf #define GSM48_MT_MM_IMSI_DETACH_IND 0x01 #define GSM48_MT_MM_LOC_UPD_ACCEPT 0x02 #define GSM48_MT_MM_LOC_UPD_REJECT 0x04 @@ -846,6 +847,7 @@ struct gsm48_rr_status { #define GSM48_MT_MM_INFO 0x32 /* Table 10.3/3GPP TS 04.08 */ +#define GSM48_MT_CC_MSG_TYPE_MASK 0xbf #define GSM48_MT_CC_ALERTING 0x01 #define GSM48_MT_CC_CALL_CONF 0x08 #define GSM48_MT_CC_CALL_PROC 0x02 -- 2.1.4

1 1

[PATCH 1/4] Initial place-holder for the new Gb/IP interface documentation
by msuraev＠sysmocom.de 10 Mar '16

10 Mar '16

From: Harald Welte <laforge(a)gnumonks.org> --- OsmoPCU/Makefile | 3 +- OsmoPCU/gb/bssgp.adoc | 67 +++++++++++++++++++++++++++++++ OsmoPCU/gb/gb-startup.msc | 0 OsmoPCU/gb/ns.adoc | 67 +++++++++++++++++++++++++++++++ OsmoPCU/osmopcu-gb-docinfo.xml | 58 +++++++++++++++++++++++++++ OsmoPCU/osmopcu-gb.adoc | 89 ++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 283 insertions(+), 1 deletion(-) create mode 100644 OsmoPCU/gb/bssgp.adoc create mode 100644 OsmoPCU/gb/gb-startup.msc create mode 100644 OsmoPCU/gb/ns.adoc create mode 100644 OsmoPCU/osmopcu-gb-docinfo.xml create mode 100644 OsmoPCU/osmopcu-gb.adoc diff --git a/OsmoPCU/Makefile b/OsmoPCU/Makefile index f742e07..ef80327 100644 --- a/OsmoPCU/Makefile +++ b/OsmoPCU/Makefile @@ -14,11 +14,12 @@ docbooktotypes = pdf # htmlcss = TOPDIR := .. -ASCIIDOCS := osmopcu-usermanual +ASCIIDOCS := osmopcu-usermanual osmopcu-gb include $(TOPDIR)/build/Makefile.asciidoc.inc include $(TOPDIR)/build/Makefile.inc +osmopcu-gb.pdf: gb/*.adoc gb/*.msc osmopcu-usermanual.pdf: chapters/*.adoc clean: diff --git a/OsmoPCU/gb/bssgp.adoc b/OsmoPCU/gb/bssgp.adoc new file mode 100644 index 0000000..c354fc1 --- /dev/null +++ b/OsmoPCU/gb/bssgp.adoc @@ -0,0 +1,67 @@ +== BSS GPRS Protocol (BSSGP) + +=== List of Messages + +The following tables list the BSSGP messages used by OsmoPCU, grouped by their +level of compliance with 3GPP TS 08.18. + +==== Messages Compliant With TS 08.18 + +.Messages compliant with TS 08.18 +[options="header",cols="10%,10%,20%,35%,5%,20%"] +|=== +| TS 08.18 § | type code (hex) | This document § | Message | <-/-> | Received/Sent by OsmoPCU +|=== + +==== Messages Specific to OsmoPCU + +There are no OsmoPCU specific BSSGP messages. + +==== Messages Not Implemented by OsmoPCU + +.3GPP TS 08.18 messages not implemented by OsmoPCU +[options="header",cols="10%,10%,80%"] +|=== +| TS 08.18 § | type code (hex) | Message +|=== + + +=== Details on Compliant BSSGP Messages + +FIXME + +=== Information Elements Overview + +All of the IEs handled by OsmoPCU are listed below, with limitations and +additions to TS 08.18 specified in more detail. + +==== IEs Conforming to TS 08.18 + +The following Information Elements are accepted by OsmoPCU. Not all IEs are +actually evaluated. + +.IEs conforming to TS 08.18 +[options="header",cols="5%,10%,40%,5%,40%"] +|=== +| tag (hex) | TS 08.18 § | IE name | <-/-> | Received/Sent by OsmoPCU +|=== + +==== IEs Not Conforming to TS 08.18 + +.IEs not conforming to TS 08.18 +[options="header",cols="5%,10%,30%,55%"] +|=== +| tag (hex) | TS 08.18 § | IE name | Description +|=== + +==== Additional Attributes and Parameters + +There are no OsmoPCU specific additional Attributes and Parameters. + +=== Details on IEs + +FIXME + +=== Gb BSSGP Initialization / PCU bring-up + +FIXME diff --git a/OsmoPCU/gb/gb-startup.msc b/OsmoPCU/gb/gb-startup.msc new file mode 100644 index 0000000..e69de29 diff --git a/OsmoPCU/gb/ns.adoc b/OsmoPCU/gb/ns.adoc new file mode 100644 index 0000000..0cc073b --- /dev/null +++ b/OsmoPCU/gb/ns.adoc @@ -0,0 +1,67 @@ +== Network Service (NS) + +=== List of Messages + +The following tables list the NS messages used by OsmoPCU, grouped by their +level of compliance with 3GPP TS 08.16. + +==== Messages Compliant With TS 08.16 + +.Messages compliant with TS 08.16 +[options="header",cols="10%,10%,20%,35%,5%,20%"] +|=== +| TS 08.16 § | type code (hex) | This document § | Message | <-/-> | Received/Sent by OsmoPCU +|=== + +==== Messages Specific to OsmoPCU + +There are no OsmoPCU specific NS messages. + +==== Messages Not Implemented by OsmoPCU + +.3GPP TS 08.16 messages not implemented by OsmoPCU +[options="header",cols="10%,10%,80%"] +|=== +| TS 08.16 § | type code (hex) | Message +|=== + + +=== Details on Compliant NS Messages + +FIXME + +=== Information Elements Overview + +All of the IEs handled by OsmoPCU are listed below, with limitations and +additions to TS 08.16 specified in more detail. + +==== IEs Conforming to TS 08.16 + +The following Information Elements are accepted by OsmoPCU. Not all IEs are +actually evaluated. + +.IEs conforming to TS 08.16 +[options="header",cols="5%,10%,40%,5%,40%"] +|=== +| tag (hex) | TS 08.16 § | IE name | <-/-> | Received/Sent by OsmoPCU +|=== + +==== IEs Not Conforming to TS 08.16 + +.IEs not conforming to TS 08.16 +[options="header",cols="5%,10%,30%,55%"] +|=== +| tag (hex) | TS 08.16 § | IE name | Description +|=== + +==== Additional Attributes and Parameters + +There are no OsmoPCU specific additional Attributes and Parameters. + +=== Details on IEs + +FIXME + +=== Gb NS Initialization / PCU bring-up + +FIXME diff --git a/OsmoPCU/osmopcu-gb-docinfo.xml b/OsmoPCU/osmopcu-gb-docinfo.xml new file mode 100644 index 0000000..280c6f7 --- /dev/null +++ b/OsmoPCU/osmopcu-gb-docinfo.xml @@ -0,0 +1,58 @@ +<revhistory> + <revision> + <revnumber>0</revnumber> + <date>February 2016</date> + <authorinitials>HW, MS</authorinitials> + <revremark> + Initial version, reflecting OsmoPCU master branch as on FIXME + (commit FIXME). + </revremark> + </revision> +</revhistory> + +<authorgroup> + <author> + <firstname>Max</firstname> + <surname>Suraev</surname> + <email>msuraev(a)sysmocom.de</email> + <authorinitials>MS</authorinitials> + <affiliation> + <shortaffil>sysmocom</shortaffil> + <orgname>sysmocom - s.f.m.c. GmbH</orgname> + <jobtitle>Software Developer</jobtitle> + </affiliation> + </author> + <author> + <firstname>Harald</firstname> + <surname>Welte</surname> + <email>hwelte(a)sysmocom.de</email> + <authorinitials>HW</authorinitials> + <affiliation> + <shortaffil>sysmocom</shortaffil> + <orgname>sysmocom - s.f.m.c. GmbH</orgname> + <jobtitle>Managing Director</jobtitle> + </affiliation> + </author> +</authorgroup> + +<copyright> + <year>2015-2016</year> + <holder>sysmocom - s.f.m.c. GmbH</holder> +</copyright> + +<legalnotice> + <para> + Permission is granted to copy, distribute and/or modify this + document under the terms of the GNU Free Documentation License, + Version 1.3 or any later version published by the Free Software + Foundation; with no Invariant Sections, no Front-Cover Texts, + and no Back-Cover Texts. A copy of the license is included in + the section entitled "GNU Free Documentation License". + </para> + <para> + The Asciidoc source code of this manual can be found at + <ulink url="http://git.osmocom.org/osmo-gsm-manuals/"> + http://git.osmocom.org/osmo-gsm-manuals/ + </ulink> + </para> +</legalnotice> diff --git a/OsmoPCU/osmopcu-gb.adoc b/OsmoPCU/osmopcu-gb.adoc new file mode 100644 index 0000000..261f7db --- /dev/null +++ b/OsmoPCU/osmopcu-gb.adoc @@ -0,0 +1,89 @@ +OsmoPCU Gb Protocol Specification +================================= +Harald Welte <nhofmeyr(a)sysmocom.de> + +== Introduction + +This document describes the Gb interface of *OsmoPCU*. Based on 3GPP TS +FIXME and FIXME, this document indicates which of the 3GPP specified Gb +messages and IEs are implemented according to 3GPP specifications, which of +these are not or not fully implemented, as well as OsmoPCU-specific extensions +to the Gb interface not specified by 3GPP. + +Extensions to the Gb interface specific to OsmoPCU are detailed in this +document. For details on the messages and IEs that comply with abovementioned +3GPP specifications, please refer to those documents. + +.3GPP document versions referred to by this document +[cols="20%,80%"] +|=== +|3GPP TS 08.56 | version 8.0.1 Release 1999 +|3GPP TS 08.58 | version 8.6.0 Release 1999 +|3GPP TS 08.60 | version 8.2.1 Release 1999 +|3GPP TS 12.21 | version 8.0.0 Release 1999 +|=== + +.IETF documents referred to by his document +[cols="20%,80%"] +|=== +|IETF RFC 768 | User Datagram Protocol +|IETF RFC 791 | Internet Protocol +|=== + +== Overview + +The OsmoPCU Gb interface consists of the NS (Network Services) and +BSSGP (Base Station Subsystem Gateway Protocol), encapsulated in UDP +(User Datagram Protocol) and IP (Internet Protocol) version 4. + +.UDP port numbers used by OsmoPCU Gb/IP +[options="header",width="50%",cols="35%,65%"] +|=== +|TCP Port Number|Usage +|23000|NS over UDP +|=== + +The NS-over-UDP link is established in the PCU -> SGSN direction, i.e. +the PCU is running as client while the SGSN is running as server. + +Establishment of the NS-over-UDP link is only possible after OsmoPCU +has been configured viat the *PCU socket* interface from OsmoBTS. + +OsmoBTS in turn receives relevant configuration parameters from +OsmoBSC or the BSC component inside OsmoNITB. + +.Overview of Gb link establishment +["mscgen"] +---- +include::gb/gb-startup.msc[] +---- + +=== Identities + +The Gb interface identities of the PCU are configured via BSC -> +OsmoBTS -> PCU Socket. They consist of + +NSEI:: NS Equipment Identifier +NSVCI:: NS Virtual Connection Identifier +BVCI:: BSSGP Virtual Connection Identifier + +For an explanation of those identifiers and their use in the NS and +BSSGP protocols, please see the reelvant 3GPP specifications for NS +and BSSGP. + +In most cases, all above identities belong to different namespaces and +must be unique within their respective namespace and within the SGSN +they connect to. + +This means that typically each OsmoPCU has one unique set of NSEI, +NSVCI and BVCI in your network. + +include::gb/ns.adoc[] + +include::gb/bssgp.adoc[] + +include::../common/chapters/port_numbers.adoc[] + +include::../common/chapters/glossary.adoc[] + +include::../common/chapters/gfdl.adoc[] -- 2.7.2

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